A description of the different sections of a Right to Know Hazardous Substance Fact Sheet is also available. For the Spanish translation of Description of a Hazardous Substance Fact Sheet click Spanish.
If you would like to see which hazardous substances have been classified as carcinogens by the International Agency for Research on Cancer (IARC), please see the Chemical Carcinogens Page.
Please note: the prefixes alpha-, beta-, n-, o-, p-, and numbers (2-; 1,2-) should not be used when searching for a substance. Use the common or chemical name without its prefix. For example, to find n-Heptane, search under Heptane; for beta-Propiolactone, search under Propiolactone; and for 1,2-Butylene Oxide, search under Butylene Oxide.
For the Spanish translation of the above click Spanish.
| RTK Substance Number | CAS Number | Uploaded | Common Name |
| 2958 | 83-32-9 | December, 1998 | ACENAPHTHENE |
| 2057 | 105-57-7 | August, 2000 | ACETAL |
| 0001 | 75-07-0 | August, 1998 | ACETALDEHYDE |
| 0001sp | 75-07-0 | October, 2001 | ACETALDEHÍDO |
| 0002 | 75-39-8 | November, 1998 | ACETALDEHYDE AMMONIA |
| 0002sp | 75-39-8 | July, 2003 | ACETALDEHÍDO AMÓNICO |
| 0003 | 107-29-9 | November, 1998 | ACETALDEHYDE OXIME |
| 0003sp | 107-29-9 | January, 2004 | ACETALDEHÍDO OXIMA |
| 2890 | 60-35-5 | November, 1998 | ACETAMIDE |
| 2890sp | 60-35-5 | July, 2003 | ACETAMIDA |
| 2960 | 591-08-2 | January, 2003 | ACETAMIDE, N-(AMINOTHIOXOMETHYL)- |
| 0004 | 64-19-7 | October, 1998 | ACETIC ACID |
| 0004sp | 64-19-7 | September, 2000 | ÁCIDO ACÉTICO |
| 0005 | 108-24-7 | August, 1998 | ACETIC ANHYDRIDE |
| 0006 | 67-64-1 | August, 1998 | ACETONE |
| 0006sp | 67-64-1 | October, 2001 | ACETONA |
| 0007 | 75-86-5 | January, 2004 | ACETONE CYANOHYDRIN |
| 0007sp | 75-86-5 | January, 2001 | CIANHIDRINA DE ACETONA |
| 2059 | 1752-30-3 | August, 2000 | ACETONE THIOSEMICARBAZIDE |
| 0008 | 75-05-8 | October, 1998 | ACETONITRILE |
| 2961 | 98-86-2 | December, 1998 | ACETOPHENONE |
| 0009 | 37187-22-7 | December, 1998 | ACETYL ACETONE PEROXIDE |
| 0010 | 53-96-3 | October, 1998 | 2 ACETYLAMINOFLUORENE |
| 0011 | 644-31-5 | November, 1998 | ACETYL BENZOYL PEROXIDE |
| 0011sp | 644-31-5 | July, 2003 | PERÓXIDO DE ACETIL BENZOILO |
| 0012 | 506-96-7 | November, 1998 | ACETYL BROMIDE |
| 0012sp | 506-96-7 | May, 2003 | BROMURO DE ACETILO |
| 0013 | 75-36-5 | November, 1998 | ACETYL CHLORIDE |
| 0013sp | 75-36-5 | May, 2003 | CLORURO DE ACETILO |
| 0014 | 3179-56-4 | November, 1998 | ACETYL CYCLOHEXANE SULFONYL PEROXIDE |
| 0014sp | 3179-56-4 | July, 2003 | PERÓXIDO SULFONIL DE ACETIL CICLOHEXANO |
| 0015 | 74-86-2 | March, 2000 | ACETYLENE |
| 0016 | 79-27-6 | April, 2001 | ACETYLENE TETRABROMIDE |
| 0017 | 507-02-8 | October, 1998 | ACETYL IODIDE |
| 0018 | 513-86-0 | June, 2000 | ACETYL METHYL CARBINOL |
| 0019 | 110-22-5 | June, 2000 | ACETYL PEROXIDE |
| 0020 | 50-78-2 | October, 1998 | ACETYLSALICYLIC ACID |
| 2064 | 260-94-6 | August, 2000 | ACRIDINE |
| 0021 | 107-02-8 | August, 1998 | ACROLEIN |
| 0021sp | 107-02-8 | October, 2001 | ACROLEÍNA |
| 0022 | 79-06-1 | March, 2000 | ACRYLAMIDE |
| 0022sp | 79-06-1 | May, 2003 | ACRILAMIDA |
| 0023 | 79-10-7 | October, 1998 | ACRYLIC ACID |
| 0024 | 107-13-1 | August, 1998 | ACRYLONITRILE |
| 0024sp | 107-13-1 | October, 2001 | ACRILONITRILO |
| 2065 | 814-68-6 | June, 2000 | ACRYLYL CHLORIDE |
| 0025 | 50-76-0 | August, 1998 | ACTINOMYCIN D |
| 0025sp | 50-76-0 | January, 2001 | ACTINOMICINA D |
| 0026 | 124-04-9 | December, 1998 | ADIPIC ACID |
| 0027 | 111-69-3 | December, 1998 | ADIPONITRILE |
| 0028 | 23214-92-8 | December, 1998 | ADRIAMYCINE |
| 0029 | 1402-68-2 | November, 1998 | AFLATOXINS |
| 0029sp | 1402-68-2 | July, 2003 | AFLATOXINAS |
| 0031 | 116-06-3 | April, 2001 | ALDICARB |
| 0032 | 107-89-1 | November, 1998 | ALDOL |
| 0032sp | 107-89-1 | May, 2003 | ALDOL |
| 0033 | 309-00-2 | April, 2001 | ALDRIN |
| 0034 | 75-75-2 | January, 2003 | ALKANE SULFONIC ACID |
| 2102 | 584-79-2 | December, 1998 | ALLETHRIN |
| 0035 | 591-87-7 | December, 1998 | ALLYL ACETATE |
| 0036 | 107-18-6 | October, 1998 | ALLYL ALCOHOL |
| 0037 | 107-11-9 | June, 2000 | ALLYL AMINE |
| 0038 | 106-95-6 | December, 1998 | ALLYL BROMIDE |
| 0039 | 107-05-1 | October, 1998 | ALLYL CHLORIDE |
| 0039sp | 107-05-1 | October, 2001 | CLORURO DE ALILO |
| 0040 | 2937-50-0 | June, 2000 | ALLYL CHLOROCARBONATE |
| 0041 | 557-31-3 | November, 1998 | ALLYL ETHYL ETHER |
| 0041sp | 557-31-3 | October, 2001 | ÉTER ETIL ALÍLICO |
| 0043 | 106-92-3 | April, 2001 | ALLYL GLYCIDYL ETHER |
| 0044 | 556-56-9 | October, 1998 | ALLYL IODIDE |
| 0045 | 57-06-7 | October, 1998 | ALLYL ISOTHIOCYANATE |
| 0046 | 2179-59-1 | April, 2001 | ALLYL PROPYL DISULFIDE |
| 0047 | 107-37-9 | October, 1998 | ALLYL TRICHLOROSILANE |
| 0054 | 7429-90-5 | March, 2000 | ALUMINUM (DUST AND FUME) |
| 0055 | 7727-15-3 | August, 2000 | ALUMINUM BROMIDE |
| 0056 | 1299-86-1 | July, 2004 | ALUMINUM CARBIDE |
| 0057 | 7446-70-0 | March, 1999 | ALUMINUM CHLORIDE |
| 0057sp | 7446-70-0 | September, 2000 | CLORURO ALUMÍNICO |
| 0059 | 7784-18-1 | December, 1998 | ALUMINUM FLUORIDE |
| 0060 | 7784-21-6 | December, 1998 | ALUMINUM HYDRIDE |
| 0061 | 13473-90-0 | April, 2001 | ALUMINUM NITRATE |
| 2891 | 1344-28-1 | March, 2002 | ALUMINUM OXIDE |
| 0062 | 7784-30-7 | October, 1998 | ALUMINUM PHOSPHATE |
| 0063 | 20859-73-8 | August, 1998 | ALUMINUM PHOSPHIDE |
| 0063sp | 20859-73-8 | January, 2004 | FOSFURO ALUMÍNICO |
| 0064 | 61789-65-9 | July, 2004 | ALUMINUM RESINATE |
| 0068 | 10043-01-3 | April, 2001 | ALUMINUM SULFATE |
| 0069 | 117-79-3 | July, 2004 | 2-AMINOANTHRAQUINONE |
| 0069sp | 117-79-3 | January, 2000 | 2-AMINOANTRAQUINONA |
| 0070 | 95-85-2 | November, 1998 | 2-AMINO-4-CHLOROPHENOL |
| 0070sp | 95-85-2 | July, 2003 | 2-AMINO-4-CLOROFENOL |
| 0071 | 140-80-7 | June, 2000 | 2-AMINO-5-DIETHYL AMINOPENTANE |
| 0072 | 92-67-1 | October, 1998 | 4-AMINODIPHENYL |
| 0073 | 929-06-6 | November, 1998 | 2-(2-AMINOETHOXY)ETHANOL |
| 0073sp | 929-06-6 | July, 2003 | 2-(2-AMINOETOXI)ETANOL |
| 0074 | 111-41-1 | December, 1998 | AMINOETHYL ETHANOLAMINE |
| 0075 | 140-31-8 | March, 1999 | N-AMINOETHYLPIPERAZINE |
| 0075sp | 140-31-8 | September, 2000 | n-AMINOETILPIPERAZINA |
| 0076 | 82-28-0 | October, 2001 | 1-AMINO-2-METHYLANTHRAQUINONE |
| 0078 | 27598-85-2 | June, 2000 | AMINOPHENOLS |
| 0079 | 4985-85-7 | August, 2000 | AMINOPROPYLDIETHANOLAMINE |
| 0080 | 123-00-2 | June, 2000 | AMINOPROPYLMORPHOLINE |
| 0081 | 504-29-0 | April, 2001 | 2-AMINOPYRIDINE |
| 0082 | 462-08-8 | August, 2000 | 3-AMINOPYRIDINE |
| 2113 | 78-53-5 | May, 2003 | AMITON |
| 2114 | 3734-97-2 | August, 2000 | AMITON OXALATE |
| 0083 | 61-82-5 | October, 1998 | AMITROL |
| 0084 | 7664-41-7 | October, 1998 | AMMONIA |
| 0085 | 631-61-8 | August, 2002 | AMMONIUM ACETATE |
| 0086 | 7784-44-3 | March, 1999 | AMMONIUM ARSENATE |
| 0086sp | 7784-44-3 | September, 2000 | ARSENIATO DE AMONIO |
| 0087 | 1863-63-4 | August, 2002 | AMMONIUM BENZOATE |
| 0088 | 1066-33-7 | May, 2001 | AMMONIUM BICARBONATE |
| 0089 | 1341-49-7 | August, 2002 | AMMONIUM BIFLUORIDE |
| 0090 | 10192-30-0 | November, 1998 | AMMONIUM BISULFITE |
| 0090sp | 10192-30-0 | October, 2001 | BISULFITO AMÓNICO |
| 0091 | 1111-78-0 | August, 2002 | AMMONIUM CARBAMATE |
| 0092 | 506-87-6 | October, 2001 | AMMONIUM CARBONATE |
| 0093 | 12125-02-9 | March, 2002 | AMMONIUM CHLORIDE FUME |
| 0093sp | 12125-02-9 | October, 1999 | CLORURO AMÓNICO |
| 0094 | 16919-58-7 | December, 2004 |
AMMONIUM CHLOROPLATINATE |
| 0094sp | 16919-58-7 | March, 2000 | CLOROPLATINATO AMÓNICO |
| 0095 | 7788-98-9 | December, 2004 |
AMMONIUM CHROMATE |
| 0095sp | 7788-98-9 | October, 2001 | CROMATO AMÓNICO |
| 0097 | 7789-09-5 | August, 1998 | AMMONIUM DICHROMATE |
| 0097sp | 7789-09-5 | October, 2001 | DICROMATO AMÓNICO |
| 0098 | 2980-64-5 | June, 2000 | AMMONIUM DINITRO-o-CRESOLATE |
| 0099 | 12125-01-8 | August, 2002 | AMMONIUM FLUORIDE |
| 0100 | 13826-83-0 | August, 2000 | AMMONIUM FLUOROBORATE |
| 0101 | 16919-19-0 | August, 2000 | AMMONIUM FLUOSILICATE |
| 0102 | 7803-63-6 | July, 2004 | AMMONIUM HYDROGEN SULFATE |
| 0103 | 1336-21-6 | August, 2002 | AMMONIUM HYDROXIDE |
| 0103sp | 1336-21-6 | October, 1999 | HIDRÓXIDO AMÓNICO |
| 0104 | 7803-55-6 | November, 1998 | AMMONIUM METAVANADATE |
| 0104sp | 7803-55-6 | January, 2004 | METAVANADATO AMÓNICO |
| 0105 | 13106-76-8 | June, 2000 | AMMONIUM MOLYBDATE |
| 0106 | 6484-52-2 | October, 1998 | AMMONIUM NITRATE |
| 0108 | 1113-38-8 | August, 2000 | AMMONIUM OXALATE |
| 0109 | 7790-98-9 | June, 2000 | AMMONIUM PERCHLORATE |
| 0110 | 13446-10-1 | August, 2000 | AMMONIUM PERMANGANATE |
| 0111 | 7727-54-0 | August, 2000 | AMMONIUM PERSULFATE |
| 0112 | 131-74-8 | August, 2000 | AMMONIUM PICRATE |
| 0113 | 12259-92-6 | June, 2000 | AMMONIUM POLYSULFIDE |
| 0114 | 7773-06-0 | April, 2001 | AMMONIUM SULFAMATE |
| 0115 | 12135-76-1 | August, 2002 | AMMONIUM SULFIDE |
| 0116 | 10196-04-0 | August, 2000 | AMMONIUM SULFITE |
| 0117 | 3164-29-2 | December, 2000 | AMMONIUM TARTRATE |
| 0118 | 13820-41-2 | August, 2002 | AMMONIUM TETRACHLOROPLATINATE |
| 0119 | 1762-95-4 | August, 2002 | AMMONIUM THIOCYANATE |
| 0119sp | 1762-95-4 | October, 1999 | TIOCIANATO AMÓNICO |
| 1321 | 628-63-7 | December, 2004 |
n-AMYL ACETATE |
| 1321sp | 628-63-7 | March, 2000 | ACETATO DE n-AMILO |
| 1643 | 626-38-0 | December, 2004 |
sec-AMYL ACETATE |
| 1643sp | 626-38-0 | March, 2000 | ACETATO DE sec-AMILO |
| 3023 | 625-16-1 | August, 2000 | tert-AMYL ACETATE |
| 0124 | 71-41-0 | October, 1998 | AMYL ALCOHOL |
| 0125 | 110-58-7 | August, 2000 | AMYLAMINE |
| 0126 | 540-18-1 | August, 2000 | AMYL BUTYRATE |
| 0127 | 543-59-9 | March, 1999 | AMYL CHLORIDE |
| 0127sp | 543-59-9 | September, 2000 | CLORURO DE AMILO |
| 0128 | 25377-72-4 | March, 1999 | n-AMYLENE |
| 0128sp | 25377-72-4 | September, 2000 | n-AMILENO |
| 0123 | 12789-46-7 | May, 2003 | AMYL ACID PHOSPHATE |
| 0129 | 638-49-3 | May, 2003 | AMYL FORMATE |
| 0130 | 110-66-7 | June, 2000 | AMYL MERCAPTAN |
| 0131 | 1002-16-0 | August, 2000 | AMYL NITRATE |
| 0132 | 110-46-3 | December, 2000 | AMYL NITRITE |
| 0134 | 107-72-2 | November, 1998 | AMYL TRICHLOROSILANE |
| 0134sp | 107-72-2 | May, 2003 | AMILTRICLOROSILANO |
| 0135 | 62-53-3 | October, 1998 | ANILINE |
| 0135sp | 62-53-3 | February, 2005 |
ANILINA |
| 0136 | 142-04-1 | January, 2004 | ANILINE HYDROCHLORIDE |
| 0136sp | 142-04-1 | September, 2000 | CLOROHIDRATO DE ANILINA |
| 0137 | 100-66-3 | March, 1999 | ANISOLE |
| 0137sp | 100-66-3 | September, 2000 | ANISOL |
| 1421 | 90-04-0 | April, 2001 | o-ANISIDINE |
| 2893 | 104-94-9 | August, 1998 | p-ANISIDINE |
| 0138 | 1300-64-7 | May, 2003 | ANISOYL CHLORIDE |
| 0139 | 120-12-7 | February, 2003 | ANTHRACENE |
| 0139sp | 120-12-7 | October, 2001 | ANTRACENO |
| 0140 | 84-65-1 | March, 1999 | ANTHRAQUINONE |
| 0140sp | 84-65-1 | January, 2001 | ANTRAQUINONA |
| 0141 | 7440-36-0 | December, 2004 |
ANTIMONY |
| 0141sp | 7440-36-0 | January, 2000 | ANTIMONIO |
| 0142 | 58164-88-8 | December, 2000 | ANTIMONY LACTATE |
| 0143 | 7647-18-9 | December, 2004 |
ANTIMONY PENTACHLORIDE |
| 0143sp | 7647-18-9 | March, 2000 | PENTACLORURO DE ANTIMONIO |
| 0144 | 7783-70-2 | December, 2004 |
ANTIMONY PENTAFLUORIDE |
| 0144sp | 7783-70-2 | March, 2000 | PENTAFLUORURO DE ANTIMONIO |
| 0145 | 28300-74-5 | December, 2004 |
ANTIMONY POTASSIUM TARTRATE |
| 0145sp | 28300-74-5 | March, 2000 | TARTRATO DE ANTIMONIO POTÁSICO |
| 0146 | 7789-61-9 | March, 2001 | ANTIMONY TRIBROMIDE |
| 0147 | 10025-91-9 | January, 2004 | ANTIMONY TRICHLORIDE |
| 0147sp | 10025-91-9 | September, 2000 | TRICLORURO DE ANTIMONIO |
| 0148 | 7783-56-4 | December, 2004 |
ANTIMONY TRIFLUORIDE |
| 0148sp | 7783-56-4 | October, 2001 | TRIFLUORO DE ANTIMONIO |
| 0149 | 1309-64-4 | December, 2004 |
ANTIMONY TRIOXIDE |
| 0149sp | 1309-64-4 | January, 2001 | TRIÓXIDO DE ANTIMONIO |
| 2132 | 1397-94-0 | August, 2002 | ANTIMYCIN |
| 0150 | 140-57-8 | August, 2000 | ARAMITE |
| 0151 | 7440-37-1 | October, 2001 | ARGON |
| 0151sp | 7440-37-1 | February, 2005 |
ARGÓN |
| 0152 | 7440-38-2 | October, 1998 | ARSENIC |
| 0152sp | 7440-38-2 | September, 2000 | ARSÉNICO |
| 0153 | 7778-39-4 | August, 2002 | ARSENIC ACID |
| 0153sp | 7778-39-4 | September, 2000 | ÁCIDO ARSÉNICO |
| 0154 | 7784-33-0 | August, 2000 | ARSENIC BROMIDE |
| 0156 | 56320-22-0 | August, 2000 | ARSENIC DISULFIDE |
| 0157 | 7784-45-4 | May, 2003 | ARSENIC IODIDE |
| 0158 | 1303-28-2 | August, 2002 | ARSENIC PENTOXIDE |
| 0158sp | 1303-28-2 | September, 2000 | PENTÓXIDO DE ARSÉNICO |
| 0159 | 7784-34-1 | February, 2003 | ARSENIC TRICHLORIDE |
| 0159sp | 7784-34-1 | October, 2001 | TRICLORURO DE ARSÉNICO |
| 0161 | 1327-53-3 | March, 2002 | ARSENIC TRIOXIDE |
| 0162 | 1303-33-9 | December, 1998 | ARSENIC TRISULFIDE |
| 0163 | 7784-42-1 | October, 1998 | ARSINE |
| 0163sp | 7784-42-1 | October, 2001 | ARSINA |
| 0164 | 1332-21-4 | April, 2001 | ASBESTOS |
| 0164sp | 1332-21-4 | March, 2002 | ASBESTO |
| 0170 | 8052-42-4 | April, 2001 | ASPHALT FUMES |
| 0170sp | 8052-42-4 | February, 2005 |
HUMOS DE ASFALTO |
| 0171 | 1912-24-9 | October, 1998 | ATRAZINE |
| 2894 | 492-80-8 | July, 2004 | AURAMINE |
| 2894sp | 492-80-8 | January, 2000 | AURAMINA |
| 0172 | 504-24-5 | July, 2004 | AVITROL |
| 0172sp | 504-24-5 | January, 2000 | AVITROL |
| 0173 | 115-02-6 | June, 2000 | AZASERINE |
| 0174 | 446-86-6 | August, 2000 | AZATHIOPRINE |
| 2140 | 2642-71-9 | January, 2003 | AZINPHOS-ETHYL |
| 0175 | 545-55-1 | January, 2003 | 1-AZIRIDINYL PHOSPHINE OXIDE (TRIS) |
| 0179 | 78-67-1 | December, 1998 | AZODIISOBUTYRONITRILE |
| 2141 | 13472-08-7 | July, 2004 | 2,2'-AZODI(2-METHYLBUTYRONITRILE) |
| RTK Substance Number | CAS Number | Uploaded | Common Name |
| 2142 | 1405-87-4 | April, 1999 | BACITRACIN |
| 0180 | 7440-39-3 | December, 2000 | BARIUM |
| 0180sp | 7440-39-3 | February, 2005 |
BARIO |
| 0181 | 18810-58-7 | August, 1998 | BARIUM AZIDE |
| 0181sp | 18810-58-7 | January, 2001 | AZIDA DE BARIO |
| 0183 | 13477-00-4 | June, 2002 | BARIUM CHLORATE |
| 3074 | 10294-40-3 | August, 2000 | BARIUM CHROMATE |
| 0184 | 542-62-1 | August, 1998 | BARIUM CYANIDE |
| 0184sp | 542-62-1 | January, 2001 | CIANURO BÁRICO |
| 0185 | 13477-10-6 | June, 2002 | BARIUM HYPOCHLORITE |
| 0186 | 10022-31-8 | June, 2002 | BARIUM NITRATE |
| 0186sp | 10022-31-8 | February, 2005 |
NITRATO DE BARIO |
| 0187 | 1304-28-5 | February, 2003 | BARIUM OXIDE |
| 0187sp | 1304-28-5 | October, 2001 | ÓXIDO BÁRICO |
| 0188 | 13465-95-7 | June, 2002 | BARIUM PERCHLORATE |
| 0189 | 7787-36-2 | June, 2002 | BARIUM PERMANGANATE |
| 0190 | 1304-29-6 | June, 2002 | BARIUM PEROXIDE |
| 0191 | 22781-23-3 | July, 2004 | BENDIOCARB |
| 0191sp | 22781-23-3 | January, 2000 | BENDIOCARB |
| 0192 | 17804-35-2 | July, 2004 | BENOMYL |
| 0192sp | 17804-35-2 | January, 2000 | BENOMILO |
| 2895 | 55-21-0 | January, 2003 | BENZAMIDE |
| 0193 | 56-55-3 | November, 1998 | BENZ(a)ANTHRACENE |
| 0193sp | 56-55-3 | January, 2004 | BENZO(a)ANTRACENO |
| 0194 | 57-97-6 | April, 1999 | BENZ(a)ANTHRACENE,7,12-DIMETHYL |
| 0195 | 98-87-3 | January, 2004 | BENZAL CHLORIDE |
| 0195sp | 98-87-3 | January, 2001 | CLORURO DE BENZAL |
| 0196 | 100-52-7 | February, 2003 | BENZALDEHYDE |
| 0196sp | 100-52-7 | October, 2001 | BENZALDEHÍDO |
| 0197 | 71-43-2 | April, 2001 | BENZENE |
| 0197sp | 71-43-2 | February, 2005 |
BENCENO |
| 2155 | 98-05-5 | May, 2003 | BENZENEARSONIC ACID |
| 2156 | 100-14-1 | August, 2000 | BENZENE, 1-(CHLOROMETHYL)-4-NITRO- |
| 0200 | 644-97-3 | June, 2000 | BENZENE PHOSPHOROUS DICHLORIDE |
| 0201 | 14684-25-4 | June, 2000 | BENZENE PHOSPHOROUS THIODICHLORIDE |
| 0202 | 98-09-9 | August, 2000 | BENZENE SULFONYL CHLORIDE |
| 0203 | 108-98-5 | December, 2004 |
BENZENETHIOL |
| 0203sp | 108-98-5 | February, 2005 |
BENCENOTIOL |
| 0204 | 92-87-5 | October, 1998 | BENZIDINE |
| 2908 | 3615-21-2 | July, 2004 | BENZIMIDAZOLE, 4,5-DICHLORO-2-(TRIFLUOROMETHYL) |
| 0208 | 205-99-2 | March, 2002 | BENZO(b)FLUORANTHENE |
| 0210 | 205-82-3 | May, 2003 | BENZO(j)FLUORANTHENE |
| 2969 | 207-08-9 | May, 2003 | BENZO(k)FLUORANTHENE |
| 2970 | 206-44-0 | January, 2003 | BENZO(jk)FLUORANTHENE |
| 0207 | 50-32-8 | October, 1998 | BENZO(a)PYRENE |
| 0209 | 65-85-0 | March, 2001 | BENZOIC ACID |
| 0211 | 100-47-0 | March, 2001 | BENZONITRILE |
| 1460 | 106-51-4 | December, 2004 |
p-BENZOQUINONE |
| 1460sp | 106-51-4 | March, 2000 | p-BENZOQUINONA |
| 0212 | 98-07-7 | July, 2004 | BENZOTRICHLORIDE |
| 0212sp | 98-07-7 | March, 2000 | BENZOTRICLORURO |
| 0213 | 98-08-8 | May, 2001 | BENZOTRIFLUORIDE |
| 0214 | 98-88-4 | December, 1998 | BENZOYL CHLORIDE |
| 0215 | 94-36-0 | October, 1998 | BENZOYL PEROXIDE |
| 0216 | 100-39-0 | May, 2001 | BENZYL BROMIDE |
| 0217 | 100-44-7 | February, 2003 | BENZYL CHLORIDE |
| 0217sp | 100-44-7 | August, 1997 | CLORURO DE BENCILO |
| 0218 | 501-53-1 | August, 2000 | BENZYL CHLOROFORMATE |
| 0219 | 103-83-3 | June, 2000 | BENZYL DIMETHYLAMINE |
| 0220 | 620-05-3 | January, 2003 | BENZYL IODIDE |
| 3080 | 1302-52-9 | June, 2000 | BERYL |
| 0222 | 7440-41-7 | October, 1998 | BERYLLIUM |
| 3088 | 6104-24-3 | May, 2003 | BERYLLIUM CARBONATE |
| 0223 | 7787-47-5 | December, 2004 |
BERYLLIUM CHLORIDE |
| 0223sp | 7787-47-5 | March, 2000 | CLORURO DE BERILIO |
| 0224 | 7787-49-7 | December, 2004 |
BERYLLIUM FLUORIDE |
| 0224sp | 7787-49-7 | March, 2000 | FLUORURO DE BERILIO |
| 3083 | 13327-32-7 | January, 2003 | BERYLLIUM HYDROXIDE |
| 0225 | 13597-99-4 | August, 1998 | BERYLLIUM NITRATE |
| 0225sp | 13597-99-4 | January, 2001 | NITRATO DE BERILIO |
| 0226 | 1304-56-9 | December, 2004 |
BERYLLIUM OXIDE |
| 0226sp | 1304-56-9 | March, 2000 | ÓXIDO DE BERILIO |
| 3084 | 13510-49-1 | December, 1998 | BERYLLIUM SULFATE |
| 0230 | 56-18-8 | December, 2000 | BIS(AMINOPROPYL)AMINE |
| 0231 | 7209-38-3 | August, 1997 | BIS(AMINOPROPYL)PIPERAZINE |
| 2971 | 111-91-1 | June, 2000 | BIS (2-CHLOROETHOXY) METHANE |
| 1965 | 66-75-1 | May, 2003 | 5-(BIS(2-CHLOROETHYL)AMINO) URACIL |
| 0232 | 111-44-4 | January, 2004 | BIS(2-CHLOROETHYL)ETHER |
| 0232sp | 111-44-4 | January, 2001 | BIS (2-CLOROETILO) ÉTER |
| 0233 | 154-93-8 | August, 2000 | BISCHLOROETHYL NITROSOUREA |
| 0234 | 542-88-1 | October, 1998 | BIS (2-CHLOROMETHYL) ETHER |
| 0235 | 108-60-1 | August, 1998 | BIS(2-CHLORO-1-METHYLETHYL)ETHER |
| 2170 | 534-07-6 | June, 2000 | BIS(CHLOROMETHYL)KETONE |
| 0236 | 110-18-9 | June, 2000 | 1,2-BIS(DIMETHYLAMINO)ETHANE |
| 0237 | 103-23-1 | December, 2000 | BIS (2-ETHYLHEXYL) ADIPATE |
| 0238 | 117-81-7 | October, 1998 | BIS (2-ETHYLHEXYL) PHTHALATE |
| 0239 | 1304-82-1 | June, 2002 | BISMUTH TELLURIDE |
| 2388 | 80-05-7 | August, 1998 | BISPHENOL A |
| 2172 | 4044-65-9 | August, 2000 | BITOSCANATE |
| 0240 | 21725-46-2 | March, 2001 | BLADEX |
| 0242 | 507-70-0 | April, 1999 | BORNEOL |
| 0243 | 1303-86-2 | December, 2000 | BORON OXIDE |
| 0244 | 10294-33-4 | October, 1998 | BORON TRIBROMIDE |
| 0244sp | 10294-33-4 | October, 2001 | TRIBROMURO DE BORO |
| 0245 | 10294-34-5 | October, 2001 | BORON TRICHLORIDE |
| 0246 | 7637-07-2 | February, 2003 | BORON TRIFLUORIDE |
| 0246sp | 7637-07-2 | October, 1999 | TRIFLUORURO DE BORO |
| 0248 | 109-63-7 | June, 2000 | BORON TRIFLUORIDE DIETHYL ETHERATE |
| 0249 | 13319-75-0 | May, 2003 | BORON TRIFLUORIDE DIHYDRATE |
| 0250 | 353-42-4 | January, 2003 | BORON TRIFLUORIDE DIMETHYL ETHERATE |
| 0251 | 314-40-9 | October, 1998 | BROMACIL |
| 2179 | 28772-56-7 | August, 2000 | BROMADIOLONE |
| 0252 | 7726-95-6 | October, 1998 | BROMINE |
| 0253 | 13863-41-7 | July, 2004 | BROMINE CHLORIDE |
| 0254 | 7789-30-2 | October, 1998 | BROMINE PENTAFLUORIDE |
| 0254sp | 7789-30-2 | October, 2001 | PENTAFLUORURO DE BROMO |
| 2182 | 79-08-3 | May, 2003 | BROMOACETIC ACID |
| 0256 | 598-31-2 | January, 2003 | BROMOACETONE |
| 0257 | 598-21-0 | June, 2000 | BROMOACETYL BROMIDE |
| 0258 | 108-86-1 | March, 1999 | BROMOBENZENE |
| 0258sp | 108-86-1 | January, 2001 | BROMOBENCENO |
| 0259 | 5798-79-8 | July, 2004 | BROMOBENZYL CYANIDE |
| 0260 | 78-76-2 | March, 1999 | 2-BROMOBUTANE |
| 0260sp | 78-76-2 | January, 2001 | 2-BROMOBUTANO |
| 2966 | 101-55-3 | August, 2000 | p-BROMODIPHENYL ETHER |
| 0261 | 592-55-2 | January, 2003 | BROMOETHYL ETHYL ETHER |
| 0262 | 75-25-2 | August, 2000 | BROMOFORM |
| 0263 | 107-82-4 | December, 2000 | 1-BROMO-3-METHYLBUTANE |
| 0265 | 78-77-3 | June, 2000 | 1-BROMO-2-METHYLPROPANE |
| 0264 | 507-19-7 | June, 2000 | 2-BROMO-2-METHYLPROPANE |
| 0266 | 107-81-3 | May, 2003 | 2-BROMOPENTANE |
| 0267 | 26446-77-5 | February, 2003 | BROMOPROPANE |
| 0267sp | 26446-77-5 | May, 2003 | BROMOPROPANO |
| 0268 | 106-96-7 | June, 2000 | 3-BROMOPROPYNE |
| 0269 | 598-73-2 | July, 2004 | BROMOTRIFLUOROETHYLENE |
| 0270 | 357-57-3 | March, 1999 | BRUCINE |
| 0270sp | 357-57-3 | September, 2000 | BRUCINA |
| 0271 | 55-98-1 | March, 1999 | BUSULFAN |
| 0271sp | 55-98-1 | September, 2000 | BUSULFÁN |
| 0272 | 106-99-0 | October, 1998 | 1,3-BUTADIENE |
| 0273 | 106-97-8 | October, 1998 | BUTANE |
| 0274 | 431-03-8 | March, 2001 | BUTANEDIONE |
| 0275 | 111-76-2 | April, 2001 | 2-BUTOXY ETHANOL |
| 0275sp | 111-76-2 | February, 2005 |
2-BUTOXIETANOL |
| 0276 | 4435-53-4 | December, 2000 | BUTOXYL |
| 0298 | 110-65-6 | July, 2004 | 1,4-BUTYNEDIOL |
| 1329 | 123-86-4 | April, 2001 | n-BUTYL ACETATE |
| 1332 | 111-36-4 | July, 2004 | n-BUTYLISOCYANATE |
| 1644 | 105-46-4 | March, 2001 | sec-BUTYL ACETATE |
| 1786 | 540-88-5 | March, 2001 | tert-BUTYL ACETATE |
| 0277 | 12788-93-1 | December, 2000 | BUTYL ACID PHOSPHATE |
| 0278 | 141-32-2 | October, 1998 | BUTYL ACRYLATE |
| 1330 | 71-36-3 | December, 1998 | n-BUTYL ALCOHOL |
| 1645 | 78-92-2 | November, 1998 | sec-BUTYL ALCOHOL |
| 1787 | 75-65-0 | December, 1998 | tert-BUTYL ALCOHOL |
| 0279 | 110-69-0 | December, 1998 | BUTYL ALDEHYDE OXIME |
| 0280 | 109-73-9 | October, 1998 | BUTYLAMINE |
| 3025 | 75-64-9 | May, 2003 | tert-BUTYLAMINE |
| 0281 | 1126-78-9 | May, 2003 | BUTYLANILINE |
| 0282 | 104-51-8 | May, 2003 | BUTYL BENZENE |
| 0285 | 592-34-7 | May, 2003 | BUTYLCHLOROFORMATE |
| 2896 | 85-68-7 | August, 1998 | BUTYL BENZYL PHTHALATE |
| 0283 | 109-65-9 | February, 2003 | BUTYL BROMIDE |
| 0283sp | 117-81-7 | May, 2003 | BROMURO DE BUTILO |
| 0284 | 109-69-3 | February, 2003 | BUTYL CHLORIDE |
| 0284sp | 109-69-3 | May, 2003 | CLORURO DE BUTILO |
| 1788 | 1189-85-1 | November, 1998 | tert-BUTYL CHROMATE |
| 1788sp | 1189-85-1 | July, 2003 | CROMATO terc-BUTÍLICO |
| 2185 | 995-33-5 | May, 2003 | N-BUTYL-4,4-DI(tert-BUTYL-PEROXY) VALERATE |
| 0286 | 25167-67-3 | February, 2003 | BUTYLENE |
| 0286sp | 25167-67-3 | September, 2000 | BUTILENO |
| 0287 | 106-88-7 | January, 2004 | 1,2-BUTYLENE OXIDE |
| 0287sp | 106-88-7 | September, 2000 | ÓXIDO DE 1,2-BUTILENO |
| 0288 | 142-96-1 | March, 2001 | BUTYL ETHER |
| 0289 | 592-84-7 | May, 2003 | BUTYL FORMATE |
| 1331 | 2426-08-6 | December, 1998 | n-BUTYL GLYCIDYL ETHER |
| 1790 | 75-91-2 | August, 2000 | tert-BUTYL HYDROPEROXIDE |
| 1791 | 1609-86-5 | August, 2000 | tert-BUTYLISOCYANATE |
| 1333 | 138-22-7 | December, 2000 | n-BUTYL LACTATE |
| 2190 | 109-72-8 | May, 2003 | BUTYL LITHIUM |
| 0290 | 109-79-5 | January, 2004 | BUTYL MERCAPTAN |
| 0290sp | 109-79-5 | September, 2000 | BUTILMERCAPTANO |
| 0291 | 97-88-1 | February, 2003 | BUTYL METHACRYLATE |
| 0291sp | 97-88-1 | September, 2000 | METACRILATO DE BUTILO |
| 3104 | 628-28-4 | May, 2003 | BUTYL METHYL ETHER |
| 0292 | 544-16-1 | August, 2000 | BUTYL NITRITE |
| 1793 | 107-71-1 | May, 2003 | tert-BUTYL PEROXYACETATE |
| 1794 | 614-45-9 | August, 2000 | tert-BUTYL PEROXYBENZOATE |
| 1800 | 927-07-1 | August, 2000 | tert-BUTYL PEROXYPIVALATE |
| 1440 | 89-72-5 | June, 2002 | o-sec-BUTYLPHENOL |
| 0295 | 590-01-2 | December, 1998 | BUTYL PROPIONATE |
| 1620 | 98-51-1 | August, 2000 | p-tert-BUTYLTOLUENE |
| 0296 | 7521-80-4 | November, 1998 | BUTYL TRICHLOROSILANE |
| 0296sp | 7521-80-4 | July, 2003 | BUTILTRICLOROSILANO |
| 2198 | 81-15-2 | January, 2003 | tert-BUTYL-2,4,6-TRINITRO-m-XYLENE |
| 0297 | 111-34-2 | May, 2003 | BUTYL VINYL ETHER |
| 0299 | 123-72-8 | February, 2003 | BUTYRALDEHYDE |
| 0299sp | 123-72-8 | September, 2000 | BUTIRALDEHÍDO |
| 0300 | 107-92-6 | October, 1998 | BUTYRIC ACID |
| 0301 | 106-31-0 | August, 2000 | BUTYRIC ANHYDRIDE |
| 0302 | 109-74-0 | August, 2000 | BUTYRONITRILE |
| RTK Substance Number | CAS Number | Uploaded | Common Name |
| 0304 |