Welcome to the LOA (Lower Olefins and Aromatics) REACH Consortium website

This website is intended to provide some general information on the Consortium, its objectives and scope, the substances which were registered in 2010, costs of letters of access for those substances and instructions on how to join any of the SIEFs currently managed by the LOA REACH Consortium.

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Substance Information and Procedure for Obtaining Letters of Access

Letters of access and information on Sameness, Classification and Labelling, Uses and Exposure and relevant updates to dossiers are held on The LOA REACH SIEF Portal. This is a password protected site and is free to access.

The LOA REACH Consortium Substance management and SIEF pages can be found here.

If your company pre-registered a substance with ECHA and are a member of a LOA SIEF, a username/password will have been sent to the email address entered into REACH IT. If you do not have access or have issue logging in, please contact the LOA SIEF manager.

If you need a letter of access but did not pre-register with ECHA we can add you to the SIEF for any substance that we manage. Please contact the SIEF Manager by email at sief.manager@loa-reach.com and provide the following information:

The SIEF Manager will add your details to the system to create an account for you in the portal.

Letters of access are ordered directly from the SIEF portal and the process is conducted entirely online. Once the contract for a letter of access has been raised and submitted you will receive an invoice which you must pay within 14 days of the invoice date. When funds have cleared in to the LOA REACH Consortium bank account, the SIEF Manager will release the materials to you for you to download from the Portal.

Please note that the process of obtaining a letter of access usually takes between 1 and 3 weeks to complete.

LOA REACH Consortium dossiers

LOA provides the following, which addresses all the information requirements of REACH Annexes VII to X:

Costs of letters of access can be found on here

Please also see the FAQ page, here for more information.

If you need to contact the SIEF Manager please email sief.manager@loa-reach.com

Substances managed by LOA

To find a specific substance use the browser search function (Control-F)

EC Name CAS No. EC No. EC Description
1- propene, 2-methyl-, pentamer 42278-27-3 610-010-2  
1,2,4-trimethylbenzene 95-63-6 202-436-9  
2,4,4-trimethylpent-1-ene 107-39-1 203-486-4  
2,4,4-trimethylpentene 25167-70-8 246-690-9  
2-butene 107-01-7 203-452-9  
2-methylbut-2-ene 513-35-9 208-156-3  
2-methylbutene 26760-64-5 247-975-0  
2-methylpropene 115-11-7 204-066-3  
2-Methylpropene, trimers 7756-94-7 500-001-0  
3a,4,5,6,7,7a-hexahydro-4,7-methano-1H-indene 4488-57-7 224-778-8  
3a,4,7,7a-tetrahydro-4,7-methanoindene 77-73-6 201-052-9  
4-vinylcyclohexene 100-40-3 202-848-9  
acetylene 74-86-2 200-816-9  
Alkanes, C4-5 68475-60-5 270-654-1  
Alkenes, C9-11, C10-rich (LOA Category L2 - DCPD) 68526-56-7L2 271-213-6  
Aromatic hydrocarbons, C6-10, C8-rich 90989-41-6 292-697-5  
Aromatic hydrocarbons, C6-8, naphtha-raffinate pyrolyzate-derived 68475-70-7 270-658-3 A complex combination of hydrocarbons obtained by the fractionation pyrolysis at 816°C (1500°F) of naphtha and raffinate. It consists predominantly of aromatic hydrocarbons having carbon numbers predominantly in the range of C6 through C8, including benzene.
Aromatic hydrocarbons, C7-8, ethylene-manuf.-by-product 90989-43-8 292-699-6  
Aromatic hydrocarbons, C8 90989-38-1 292-694-9  
Aromatic hydrocarbons, distn. residues, naphthalene-rich 98072-36-7 308-487-4  
benzene 71-43-2 200-753-7  
Benzene, ethylenated, residues 68987-42-8 273-494-0 The complex residuum from the distillation of ethylbenzene. It consists primarily of polyethylbenzenes and ethyldiphenyl ethanes with various small amounts of diethylbenzenes and butylbenzenes.
but-1-ene 106-98-9 203-449-2  
buta-1,2-diene 590-19-2 209-674-2  
buta-1,3-diene 106-99-0 203-450-8  
butane 106-97-8 203-448-7  
butene 25167-67-3 246-689-3  
Butene, homopolymer (products derived from either/or But-1-ene/But-2-ene) 9003-29-6 500-004-7  
cyclohexane 110-82-7 203-806-2  
cyclopentene 142-29-0 205-532-9  
Distillates (petroleum), C3-6, piperylene-rich 68477-35-0 270-726-2 A complex combination of hydrocarbons from the distillation of saturated and unsaturated aliphatic hydrocarbons usually ranging in the carbon numbers C3 through C6. It consists of saturated and unsaturated hydrocarbons having carbon numbers in the range of C3 through C6, predominantly piperylenes.
Distillates (petroleum), cracked steam-cracked petroleum distillates 68477-38-3 270-727-8 A complex combination of hydrocarbons obtained by distilling cracked steam cracked distillate and/or its fractionation products. It consists of hydrocarbons having carbon number predominantly in the range of C10 to low molecular weight polymers.
Distillates (petroleum), cracked stripped steam-cracked petroleum distillates, C10-12 fraction 68477-40-7 270-729-9 A complex combination of hydrocarbons obtained by distilling cracked stripped steam-cracked distillates. It consists predominantly of aromatic hydrocarbons having carbon numbers in the range of C10 through C12.
Distillates (petroleum), cracked stripped steam-cracked petroleum distillates, C8-10 fraction 68477-39-4 270-728-3 A complex combination of hydrocarbons obtained by distilling cracked stripped steam-cracked distillates. It consists of hydrocarbons having carbon numbers in the range of C8 through C10 and boiling in the range of approximately 129°C to 194°C (264°F to 382°F).
Distillates (petroleum), cracked stripped steam-cracked petroleum distillates, C8-10 fraction 68477-39-4 270-728-3 A complex combination of hydrocarbons obtained by distilling cracked stripped steam-cracked distillates. It consists of hydrocarbons having carbon numbers in the range of C8 through C10 and boiling in the range of approximately 129°C to 194°C (264°F to 382°F).
Distillates (petroleum), cracked, ethylene manuf. by-product, C9-10 fraction (LOA Category L1) 94733-07-0L1    
Distillates (petroleum), cracked, ethylene manuf. by-product, C9-10 fraction (LOA Category L2 - DCPD) 94733-07-0L2 305-586-4 A complex combination of hydrocarbons obtained by distillation of residual oils from the cracking of petroleum or natural gas. It consists of hydrocarbons having carbon numbers predominantly in the range of C9 through C10 and boiling in the range of 150°C to 210°C (302°F to 410°F).
Distillates (petroleum), heat-soaked steam-cracked naphtha, C5-rich 91995-41-4 295-302-4 A complex combination of hydrocarbons obtained by distillation of heat-soaked steam-cracked naphtha. It consists predominantly of hydrocarbons having carbon numbers in the range of C4 through C6, predominantly C5.
Distillates (petroleum), heavy steam-cracked 101631-14-5 309-939-3 A complex combination of hydrocarbons obtained by distillation of steam cracking heavy residues. It consists predominantly of highly alkylated heavy aromatic hydrocarbons boiling in the range of approximately 250°C to 400°C (482°F to 752°F).
Distillates (petroleum), hydrotreated middle, intermediate boiling 68410-96-8 270-092-7 A complex combination of hydrocarbons obtained by the distillation of products from a middle distillate hydrotreating process. It consists of hydrocarbons having carbon numbers predominantly in the range of C5 through C10 and boiling in the range of approximately 127°C to 188°C (262°F to 370°F).
Distillates (petroleum), light steam-cracked naphtha 68475-80-9 270-662-5 A complex combination of hydrocarbons from the multiple distillation of products from a steam cracking process. It consists of hydrocarbons having carbon numbers predominantly in the range of C10 through C18.
Distillates (petroleum), light thermal cracked, debutanized arom. 68955-29-3 273-266-0 A complex combination of hydrocarbons produced by the distillation of products from a thermal cracking process. It consists predominantly of aromatic hydrocarbons, primarily benzene.
Distillates (petroleum), naphtha steam cracking-derived, hydrotreated light arom. 91995-50-5 295-311-3 A complex combination of hydrocarbons obtained by treating a light distillate from steam-cracked naphtha. It consists predominantly of aromatic hydrocarbons.
Distillates (petroleum), polymd. steam-cracked petroleum distillates, C5-12 fraction 68477-50-9 270-735-1 A complex combination of hydrocarbons obtained from the distillation of polymerized steam-cracked petroleum distillate. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C5 through C12.
Distillates (petroleum), polymd. steam-cracked petroleum distillates, C5-12 fraction (LOA Cat L1) 68477-50-9L1 270-735-1 A complex combination of hydrocarbons obtained from the distillation of polymerized steam-cracked petroleum distillate. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C5 through C12.
Distillates (petroleum), polymd. steam-cracked petroleum distillates, C5-12 fraction (LOA Category E) 68477-50-9E 270-735-1  
Distillates (petroleum), steam-cracked 64742-91-2 265-194-3 A complex combination of hydrocarbons obtained by the distillation of the products from a steam cracking process. It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly in the range of C7 through C16 and boiling in the range of approximately 90°C to 290°C (190°F to 554°F).
Distillates (petroleum), steam-cracked, C5-12 fraction (LOA Category H) 68477-53-2H 270-736-7 A complex combination of organic compounds obtained by the distillation of products from a steam cracking process. It consists of unsaturated hydrocarbons having carbon numbers predominantly in the range of C5 through C12.
Distillates (petroleum), steam-cracked, C5-12 fraction (LOA Category L2) 68477-53-2L2 270-736-7  
Distillates (petroleum), steam-cracked, C8-12 fraction (Category L1) 68477-54-3L1 270-737-2 A complex combination of organic compounds obtained by the distillation of products from a steam cracking process. It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly in the range of C8 through C12.
Distillates (petroleum), steam-cracked, C8-12 fraction (Category L2 - DCPD) 68477-54-3L2 270-737-2 A complex combination of organic compounds obtained by the distillation of products from a steam cracking process. It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly in the range of C8 through C12.
Dodecene, branched 97280-83-6 306-479-5  
ethane 74-84-0 200-814-8  
ethylene 74-85-1 200-815-3  
Extract residues (coal), light oil alk., acid ext., indene fraction 101316-62-5 309-867-2  
Extracts (petroleum), heavy naphtha solvent 64741-98-6 265-099-7 A complex combination of hydrocarbons obtained as the extract from a solvent extraction process. It consists predominantly of aromatic hydrocarbons having carbon numbers predominantly in the range of C7 through C12 and boiling in the range of approximately 90°C to 220°C (194°F to 428°F).
Extracts (petroleum), light naphtha solvent 64741-99-7 265-100-0 A complex combination of hydrocarbons obtained as the extract from a solvent extraction process. It consists predominantly of aromatic hydrocarbons having carbon numbers predominantly in the range of C6 through C8 and boiling in the range of approximately 80°C to 145°C (176°F to 293°F). This stream is likely to contain 10 vol. % or more benzene.
Fuel gases 68476-26-6 270-667-2 A combination of light gases. It consists predominantly of hydrogen and/or low molecular weight hydrocarbons.
Fuel gases, crude oil distillates 68476-29-9 270-670-9 A complex combination of light gases produced by distillation of crude oil and by catalytic reforming of naphtha. It consists of hydrogen and hydrocarbons having carbon numbers predominantly in the range of C1 through C4 and boiling in the range of approximately -217°C to -12°C (-423°F to 10°F).
Fuel gases, refinery 68308-27-0 269-640-8 A complex combination of light gases consisting of hydrogen and hydrocarbons having carbon numbers predominantly in the range of C1 through C5.
Fuel oil, pyrolysis 69013-21-4 273-782-6 The complex combination of hydrocarbons obtained from the initial water quenching of the effluent gases from a thermal cracking of ethane, propane or light naphtha. This stream is likely to contain 5 wt. % or more of 4- to 6- membered condensed ring aromatic hydrocarbons.
Gas oils (petroleum), steam-cracked 68527-18-4 271-260-2 A complex combination of hydrocarbons produced by distillation of the products from a steam cracking process. It consists of hydrocarbons having carbon numbers predominantly greater than C9 and boiling in the range of from approximately 205°C to 400°C (400°F to 752°F)
Gases (petroleum), butane splitter overheads 68477-69-0 270-750-3 A complex combination of hydrocarbons obtained from the distillation of the butane stream. It consists of aliphatic hydrocarbons having carbon numbers predominantly in the range of C3 through C4.
Gases (petroleum), C1-5, wet 68602-83-5 271-624-0 A complex combination of hydrocarbons produced by the distillation of crude oil and/or the cracking of tower gas oil. It consists of hydrocarbons having carbon numbers predominantly in the range of C1 through C5.
Gases (petroleum), C2-4, sweetened 68783-65-3 272-205-5 A complex combination of hydrocarbons obtained by subjecting a petroleum distillate to a sweetening process to convert mercaptans or to remove acidic impurities. It consists predominantly of saturated and unsaturated hydrocarbons having carbon numbers predominantly in the range of C2 through C4 and boiling in the range of approximately -51°C to -34°C (-60°F to -30°F).
Gases (petroleum), C3-4 68131-75-9 268-629-5 A complex combination of hydrocarbons produced by distillation of products from the cracking of crude oil. It consists of hydrocarbons having carbon numbers in the range of C3 through C4, predominantly of propane and propylene, and boiling in the range of approximately -51°C to -1°C (-60°F to 30°F.)
gases (petroleum), C3-4, isobutane-rich 68477-33-8 270-724-1 A complex combination of hydrocarbons from the distillation of saturated and unsaturated hydrocarbons usually ranging in carbon numbers from C3 through C6, predominantly butane and isobutane. It consists of saturated and unsaturated hydrocarbons having carbon numbers in the range of C3 through C4, predominantly isobutane.
Gases (petroleum), C3-5 olefinic-paraffinic alkylation feed 68477-83-8 270-765-5 A complex combination of olefinic and paraffinic hydrocarbons having carbon numbers in the range of C3 through C5 which are used as alkylation feed. Ambient temperatures normally exceed the critical temperature of these combinations.
Gases (petroleum), catalytic cracked overheads 68409-99-4 270-071-2 A complex combination of hydrocarbons produced by the distillation of products from the catalytic cracking process. It consists of hydrocarbons having carbon numbers predominantly in the range of C3 through C5 and boiling in the range of approximately -48°C to 32°C (-54°F to 90°F).
Gases (petroleum), catalytic reformed naphtha stripper overheads 68477-77-0 270-759-2 A complex combination of hydrocarbons obtained from the stabilization of catalytic reformed naphtha. Its consists of hydrogen and saturated aliphatic hydrocarbons having carbon numbers predominantly in the range of C1 through C4.
Gases (petroleum), catalytic-cracked gas oil depropanizer bottoms, C4-rich acid-free 68477-71-4 270-752-4 A complex combination of hydrocarbons obtained from fractionation of catalytic cracked gas oil hydrocarbon stream and treated to remove hydrogen sulfide and other acidic components. It consists of hydrocarbons having carbon numbers in the range of C3 through C5, predominantly C4.
Gases (petroleum), crude distn. and catalytic cracking 68989-88-8 273-563-5 A complex combination produced by crude distillation and catalytic cracking processes. It consists of hydrogen, hydrogen sulfide, nitrogen, carbon monoxide and paraffinic and olefinic hydrocarbons having carbon numbers predominantly in the range of C1 through C6.
Gases (petroleum), deisobutanizer tower overheads 68477-87-2 270-769-7 A complex combination of hydrocarbons produced by the atmospheric distillation of a butane-butylene stream. It consists of aliphatic hydrocarbons having carbon numbers predominantly in the range of C3 through C4.
Gases (petroleum), depropanizer dry, propene-rich 68477-90-7 270-772-3 A complex combination of hydrocarbons produced by the distillation of products from the gas and gasoline fractions of a catalytic cracking process. It consists predominantly of propylene with some ethane and propane.
Gases (petroleum), extractive, C3-5, butene-isobutylene-rich 68477-42-9 270-732-5 A complex combination of hydrocarbons obtained from extractive distillation of saturated and unsaturated aliphatic hydrocarbons usually ranging in carbon numbers from C3 through C5, predominantly C4. It consists of saturated and unsaturated hydrocarbons having carbon numbers predominantly in the range of C3 through C5, predominantly butenes and isobutylene.
Gases (petroleum), light steam-cracked, butadiene conc. (LOA Category D) 68955-28-2D 273-265-5 A complex combination of hydrocarbons produced by the distillation of products from a thermal cracking process. It consists of hydrocarbons having a carbon number predominantly of C4.
Gases (petroleum), refinery 68814-67-5 272-338-9 A complex combination obtained from various petroleum refining operations. It consists of hydrogen and hydrocarbons having carbon numbers predominantly in the range of C1 through C3.
Gases (petroleum), refinery blend 68783-07-3 272-183-7 A complex combination obtained from various refinery processes. It consists of hydrogen, hydrogen sulfide and hydrocarbons having carbon numbers predominantly in the range of C1 through C5.
Gases (petroleum), straight-run stabilizer off 68919-10-8 272-883-2 A complex combination of hydrocarbons obtained from the fractionation of the liquid from the first tower used in the distillation of crude oil. It consists of saturated aliphatic hydrocarbons having carbon numbers predominantly in the range of C1 through C4.
Gasoline, pyrolysis, debutanizer bottoms 68606-10-0 271-726-5 A complex combination of hydrocarbons obtained from the fractionation of depropanizer bottoms. It consists of hydrocarbons having carbon numbers predominantly greater than C5.
Gasoline, pyrolysis, hydrogenated 94114-03-1 302-639-3 A distillation fraction from the hydrogenation of pyrolysis gasoline boiling in the range of approximately 20°C to 200°C (68°F to 392°F).
Hydrocarbons, C2-4, C3-rich 68476-49-3 270-689-2  
Hydrocarbons, C3 68606-26-8 271-735-4  
Hydrocarbons, C3-4 68476-40-4 270-681-9  
Hydrocarbons, C3-4-rich, petroleum distillate 68512-91-4 270-990-9 A complex combination of hydrocarbons produced by distillation and condensation of crude oil. It consists of hydrocarbons having carbon numbers in the range of C3 through C5, predominantly C3 through C4.
Hydrocarbons, C3-6, C5-rich, steam-cracked naphtha 102110-14-5 310-012-0 A complex combination of hydrocarbons obtained by distillation of steam-cracked naphtha. It consists predominantly of hydrocarbons having carbon numbers in the range of C3 through C6, predominantly C5.
Hydrocarbons, C4 (LOA Category D) 87741-01-3D 289-339-5  
Hydrocarbons, C4 (LOA Category K) 87741-01-3K    
Hydrocarbons, C4 and C8, butene concentrator by-product 68606-29-1 271-739-6 A complex combination of hydrocarbons produced during butylene concentrate production. It consists predominantly of C4 and C8 hydrocarbons.
Hydrocarbons, C4, 1,3-butadiene- and isobutene-free 95465-89-7 306-004-1  
Hydrocarbons, C4, 1,3-butadiene-free 91052-98-1 293-260-1  
Hydrocarbons, C4, 1,3-butadiene-free, polymd., dibutylene fraction 91052-99-2 293-261-7 A complex combination of hydrocarbons obtained from distillation of the butadiene-free C4 fraction of a naphtha steam-cracking process. It consists predominantly of branched olefinic hydrocarbons having carbon numbers of C8, C12, C16 and C20 and boiling in the range of approximately 105°C to 120°C (221°F to 248°F).
Hydrocarbons, C4, 1,3-butadiene-free, polymd., dibutylene fraction, hydrogenated 93685-78-0 297-626-1  
Hydrocarbons, C4, 1,3-butadiene-free, polymd., tetraisobutylene fraction 91053-00-8 293-262-2 A complex combination of hydrocarbons obtained from distillation of the butadiene-free C4 fraction of a naphtha steam-cracking process. It consists predominantly of olefinic hydrocarbons having carbon numbers of C8, C12, C16 and C20 and boiling in the range of approximately 95°C to 120°C (203°F to 248°F).
Hydrocarbons, C4, 1,3-butadiene-free, polymd., triisobutylene fraction 91053-01-9 293-263-8 A complex combination of hydrocarbons obtained from distillation of the butadiene-free C4 fraction of a naphtha steam-cracking process. It consists predominantly of olefinic hydrocarbons having carbon numbers of C8, C12, C16 and C20 and boiling in the range of approximately 170°C to 185°C (338°F to 365°F).
Hydrocarbons, C4, butane conc., n-butene-contg. 95465-91-1 306-006-2  
Hydrocarbons, C4, ethylene-manuf.-by-product 68476-52-8 270-691-3 A complex combination of hydrocarbons produced by distillation of products from a cracking process in an ethylene plant. It consists predominantly of C4 hydrocarbons.
Hydrocarbons, C4, n-butene conc. 95465-90-0 306-005-7  
Hydrocarbons, C4, steam-cracker distillate (LOA Category C) 92045-23-3C 295-405-4 A complex combination of hydrocarbons produced by the distillation of the products of a steam cracking process. It consists predominantly of hydrocarbons having a carbon number of C4, predominantly 1-butene and 2-butene, containing also butane and isobutene and boiling in the range of approximately minus 12°C to 5°C (10.4°F to 41°F).
Hydrocarbons, C4, steam-cracker distillate (LOA Category D) 92045-23-3D 295-405-4 A complex combination of hydrocarbons produced by the distillation of the products of a steam cracking process. It consists predominantly of hydrocarbons having a carbon number of C4, predominantly 1-butene and 2-butene, containing also butane and isobutene and boiling in the range of approximately minus 12°C to 5°C (10.4°F to 41°F).
Hydrocarbons, C4, steam-cracker distillates (LOA Cat K) 92045-23-3K    
Hydrocarbons, C4-12, naphtha-cracking, hydrotreated 92045-61-9 295-443-1 A complex combination of hydrocarbons obtained by distillation from the product of a naphtha steam cracking process and subsequent catalytic selective hydrogenation of gum formers. It consists of hydrocarbons having carbon numbers predominantly in the range of C4 through C12 and boiling in the range of approximately 30°C to 230°C (86°F to 446°F).
Hydrocarbons, C4-6, C5-rich 68476-43-7 270-684-5 A complex combination of hydrocarbons produced by distillation of products from a catalytic cracking process. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C4 through C6, rich in C5. It contains a large proportion of unsaturated hydrocarbons.
Hydrocarbons, C5, ethylene-manuf.-by-product, hydrogenated 92128-68-2 295-765-2  
Hydrocarbons, C5-7, C6-rich, ethylene manuf. by-products 91723-50-1 294-557-9  
Hydrocarbons, C5-8 92128-65-9 295-762-6  
Hydrocarbons, C5-rich 68476-55-1 270-695-5  
Hydrocarbons, C5-rich 68476-55-1 270-695-5  
Hydrocarbons, C5-rich (LOA Category A) 68476-55-1A 270-695-5  
Hydrocarbons, C5-rich (LOA Category J) 68476-55-1J    
Hydrocarbons, C5-rich, dicyclopentadiene-contg. 102110-15-6 310-013-6 A complex combination of hydrocarbons obtained by distillation of the products from a steam-cracking process. It consists predominantly of hydrocarbons having carbon numbers of C5 and dicyclopentadiene and boiling in the range of approximately 30°C to 170°C (86°F to 338°F).
Hydrocarbons, C5-unsatd. 68956-55-8 273-308-8  
Hydrocarbons, C6-8, hydrogenated sorption-dearomatized, toluene raffination 101316-66-9 309-870-9 A complex combination of hydrocarbons obtained during the sorptions of toluene from a hydrocarbon fraction from cracked gasoline treated with hydrogen in the presence of a catalyst. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C6 through C8 and boiling in the range of approximately 80°C to 135°C (176°F to 275°F).
Hydrocarbons, ethylene-manuf.-by-product distn. residues 68921-67-5 272-951-1 The complex combination of hydrocarbons produced by the distillation of products from an ethylene manufacturing process. It consists predominantly of aromatic hydrocqdarbons having carbon numbers predominantly in the range of C5 through C11.
Hydrocarbons, steam-cracking tar middle 86290-83-7 289-222-9 A complex combination of hydrocarbons obtained by the distillation of steam cracked tar. It consists predominantly of aromatic and other hydrocarbons and organic sulfur compounds boiling in the range of approximately 210°C to 340°C (410°F to 644°F).
isobutane 75-28-5 200-857-2  
isooctene 11071-47-9 234-294-9  
isoprene 78-79-5 201-143-3  
mesitylene 108-67-8 203-604-4  
methane 74-82-8 200-812-7  
m-xylene 108-38-3 203-576-3  
Naphtha (petroleum), hydrotreated light 64742-49-0 265-151-9 A complex combination of hydrocarbons obtained by treating a petroleum fraction with hydrogen in the presence of a catalyst. It consists of hydrocarbons having carbon numbers predominantly in the range of C4 through C11 and boiling in the range of approximately minus 20°C to 190°C (-4°F to 374°F).
Naphtha (petroleum), hydrotreated light steam-cracked 92045-57-3 295-438-4 A complex combination of hydrocarbons obtained by treating a petroleum fraction, derived from a pyrolysis process, with hydrogen in the presence of a catalyst. It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly in the range of C5 through C11 and boiling in the range of approximately 35°C to 190°C (95°F to 374°F).
Naphtha (petroleum), light steam-cracked 64742-83-2 265-187-5 A complex combination of hydrocarbons obtained by the distillation of the products from a steam cracking process. It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly in the range of C4 through C11 and boiling in the range of approximately minus 20°C to 190°C (-4°F to 374°F). This stream is likely to contain 10 vol. % or more benzene.
Naphtha (petroleum), light steam-cracked arom. 68527-23-1 271-264-4 A complex combination of hydrocarbons produced by distillation of products from a steam-cracking process. It consists predominantly of aromatic hydrocarbons having carbon numbers predominantly in the range of C7 through C9 and boiling in the range of approximately 110°C to 165°C (230°F to 329°F).
Naphtha (petroleum), light steam-cracked, debenzenized (LOA Category H) 68527-26-4H 271-266-5 A complex combination of hydrocarbons produced by distillation of products from a steam-cracking process. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C4 through C12 and boiling in the range of approximately 80°C to 218°C (176°F to 424°F).
Naphtha (petroleum), light steam-cracked, debenzenized, C8-16-cycloalkadiene conc. (LOA Category L2-DCPD) 68478-10-4L2 270-790-1 A complex combination of hydrocarbons obtained by the distillation of debenzenized light steam-cracked naphtha. It consists predominantly of cyclic olefinic and aromatic hydrocarbons having carbon numbers predominantly in the range of C8 through C16 and boiling in the range of approximately 130°C to 300°C (226°F to 572°F).
Naphtha (petroleum), light steam-cracked, thermally treated 98219-47-7 308-714-7 A complex combination of hydrocarbons obtained by the treatment and distillation of light steam-cracked petroleum naphtha. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C5 through C6 and boiling in the range of approximately 35°C to 80°C (95°F to 176°F).
Naphtha (petroleum), solvent-refined light 64741-84-0 265-086-6 A complex combination of hydrocarbons obtained as the raffinate from a solvent extraction process. It consists predominantly of aliphatic hydrocarbons having carbon numbers predominantly in the range of C5 through C11 and boiling in the range of approximately 35°C to 190°C (95°F to 374°F).
Naphtha (petroleum), solvent-refined light (LOA Category H) 64741-84-0H 265-086-6 A complex combination of hydrocarbons obtained as the raffinate from a solvent extraction process. It consists predominantly of aliphatic hydrocarbons having carbon numbers predominantly in the range of C5 through C11 and boiling in the range of approximately 35°C to 190°C (95°F to 374°F).
Naphtha (petroleum), steam-cracked middle arom. 68516-20-1 271-138-9 A complex combination of hydrocarbons produced by the distillation of products from a steam-cracking process. It consists predominantly of aromatic hydrocarbons having carbon numbers predominantly in the range of C7 through C12 and boiling in the range of approximately 130°C to 220°C(266°F to 428°F).
Naphtha (petroleum), steam-cracked middle arom. (LOA Category H) 68516-20-1H 271-138-9 A complex combination of hydrocarbons produced by the distillation of products from a steam-cracking process. It consists predominantly of aromatic hydrocarbons having carbon numbers predominantly in the range of C7 through C12 and boiling in the range of approximately 130°C to 220°C(266°F to 428°F).
Naphtha (petroleum), steam-cracked middle arom. (LOA Category J) 68516-20-1J 271-138-9  
Naphtha (petroleum), steam-cracked, hydrotreated, C9-10-arom.-rich 90641-13-7 292-637-8 A complex combination of hydrocarbons produced by the distillation of the products from a steam cracking process thereafter treated with hydrogen in the presence of a catalyst. It consists predominantly of aromatic hydrocarbons having carbon numbers in the range of C9 through C10 and boiling in the range of approximately 140°C to 200°C (284°F to 392°F).
Naphtha, thermal cracked, residues, naphthalene cut 85117-10-8 285-562-7  
Natural gas condensates (petroleum) 64741-47-5 265-047-3 A complex combination of hydrocarbons separated as a liquid from natural gas in a surface separator by retrograde condensation. It consists mainly of hydrocarbons having carbon numbers predominantly in the range of C2 to C20. It is a liquid at atmospheric temperature and pressure.
o-xylene 95-47-6 202-422-2  
Petroleum gases, liquefied 68476-85-7 270-704-2 A complex combination of hydrocarbons produced by the distillation of crude oil. It consists of hydrocarbons having carbon numbers predominantly in the range of C3 through C7 and boiling in the range of approximately -40°C to 80°C (-40°F to 176°F).
Petroleum gases, liquefied, sweetened 68476-86-8 270-705-8 A complex combination of hydrocarbons obtained by subjecting liquefied petroleum gas mix to a sweetening process to convert mercaptans or to remove acidic impurities. It consists of hydrocarbons having carbon numbers predominantly in the range of C3 through C7 and boiling in the range of approximately -40°C to 80°C (-40°F to 176°F).
Petroleum gases, liquefied, sweetened, C4 fraction 92045-80-2 295-463-0 A complex combination of hydrocarbons obtained by subjecting a liquified petroleum gas mix to a sweetening process to oxidize mercaptans or to remove acidic impurities. It consists predominantly of C4 saturated and unsaturated hydrocarbons.
propane 74-98-6 200-827-9  
propene 115-07-1 204-062-1  
p-xylene 106-42-3 203-396-5  
Reaction mass of ethyl benzene and m-xylene and p-xylene N/A    
Reaction mass of ethylbenzene and xylene 905-588-0 202-849-4|E:215-535-7  
Reaction mass of xylenes and ethylbenzene NA    
Residues (petroleum), alkylation splitter, C4-rich 68513-66-6 271-010-2 A complex residuum from the distillation of streams from various refinery operations. It consists of hydrocarbons having carbon numbers in the range of C4 through C5, predominantly butane and boiling in the range of approximately -11.7°C to 27.8°C (11°F to 82°F).
Residues (petroleum), steam-cracked 64742-90-1 265-193-8 A complex combination of hydrocarbons obtained as the residual fraction from the distillation of the products of a steam cracking process (including steam cracking to produce ethylene). It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly greater than C14 and boiling above approximately 260°C (500°F). This stream is likely to contain 5 wt. % or more of 4- to 6-membered condensed ring aromatic hydrocarbons.
Residues (petroleum), steam-cracked light (LOA Category G) 68513-69-9G 271-013-9 A complex residuum from the distillation of the products from a steam-cracking process. It consists predominantly of aromatic and unsaturated hydrocarbons having carbon numbers greater than C7 and boiling in the range of approximately 101°C to 555°C (214°F to 1030°F).
Residues (petroleum), steam-cracked light (LOA Category H) 68513-69-9H 271-013-9  
Residues (petroleum), steam-cracked light, arom. 102110-55-4 310-057-6 A complex combination of hydrocarbons obtained by the distillation of the products of steam cracking or similar processes after taking off the very light products resulting in a residue starting with hydrocarbons having carbon numbers greater than C5. It consists predominantly of aromatic hydrocarbons having carbon numbers greater than C5 and boiling above approximately 40°C (104°F).
Residues, steam cracked, thermally treated 98219-64-8 308-733-0 A complex combination of hydrocarbons obtained by the treatment and distillation of raw steam-cracked naphtha. It consists predominantly of unsaturated hydrocarbons boiling in the range above approximately 180°C (356°F).
SIEF CAS EC Number  
Solvent naphtha (coal) 65996-79-4 266-013-0 The distillate from either high temperature coal tar, coke oven light oil, or coal tar oil alkaline extract residue having an approximate distillation range of 130°C to 210°C (266°F to 410°F) Composed primarily of indene and other polycyclic ring systems containing a single aromatic ring. May contain phenolic compounds and aromatic nitrogen bases.
Solvent naphtha (coal), xylene-styrene cut 85536-20-5 287-502-5  
Solvent naphtha (petroleum), heavy arom. (LOA Category G) 64742-94-5G    
Solvent naphtha (petroleum), heavy arom. (LOA Category J) 64742-94-5J 265-198-5 A complex combination of hydrocarbons obtained from distillation of aromatic streams. It consists predominantly of aromatic hydrocarbons having carbon numbers predominantly in the range of C9 through C16 and boiling in the range of approximately 165°C to 290°C (330°F to 554°F).
Solvent naphtha (petroleum), heavy arom. (LOA Category L) 64742-94-5L    
toluene 108-88-3 203-625-9  
xylene 1330-20-7 215-535-7  

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