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Westlake Chemical

Rank in Toxic 100: 47
Rank among all TRI companies: 115
Air releases 2017 (lbs): 3,209,537
Incineration transfers 2017 (lbs): 777,365
Total Air and Incineration Toxic Score 2017: 634,732
Percentage of national total 2017 toxic air and incineration score: 0.2%
EJ: Poor Share: 16%
EJ: Minority Share: 32%

This company is rank 37 on the Toxic 100 Water list.
This company has information in PERI's Greenhouse database.

Chemicals displayed below: (
display facilities) (display chemicals at facilities)
Basic data displayed (display advanced data instead)
(Click on column headers to re-sort table: current sort is by percent of total company score.)
(Links on chemical names lead to Scorecard chemical health effects.)
1,2-Dichloroethane 173,203 37,735 271,151 42.72% 15.6% 28.1%
Chloroprene 6,042 0 132,273 20.84% 15.1% 43.8%
Vinyl chloride 188,563 664 69,019 10.87% 16.3% 23.5%
Chloroform 55,654 6,445 54,622 8.61% 15.6% 38.8%
Formaldehyde 30,611 0 35,099 5.53% 20.8% 51.0%
Trichloroethylene 24,618 9,729 11,072 1.74% 15.2% 25.4%
Benzene 32,208 16,025 9,423 1.48% 16.3% 14.0%
1,3-Butadiene 15,109 0 7,859 1.24% 16.5% 14.7%
Chlorine 52,110 0 7,642 1.20% 16.6% 28.2%
1,1,2,2-Tetrachloroethane 1,422 9,997 6,877 1.08% 15.6% 23.8%
Chromium compounds 22 0 6,382 1.01% 19.8% 54.2%
Carbon tetrachloride 15,672 1,514 5,077 0.80% 15.5% 19.2%
Hexachlorobenzene 559 4,014 3,843 0.61% 16.5% 11.7%
Asbestos (friable) 3 0 3,102 0.49% 20.9% 51.3%
1,1,2-Trichloroethane 11,028 73,976 1,872 0.29% 15.4% 26.7%
Nickel compounds 156 0 1,445 0.23% 20.3% 53.0%
Acetaldehyde 6,258 0 1,254 0.20% 21.4% 52.9%
Tetrachloroethylene (Perchloroethylene) 66,042 36,190 1,177 0.19% 15.2% 25.1%
Antimony compounds 1,060 0 926 0.15% 11.5% 38.7%
Ethylene oxide 5 0 664 0.10% 16.7% 29.6%
Maleic anhydride 4,203 0 620 0.10% 21.8% 53.7%
Hydrochloric acid 158,373 0 483 0.08% 15.8% 25.2%
Naphthalene 7,894 1,625 412 0.06% 16.1% 10.5%
Bis(2-chloroethyl)ether 23 5,831 389 0.06% 14.3% 36.2%
1,1,1,2-Tetrachloroethane 3,851 4,430 369 0.06% 15.2% 25.0%
Dicyclopentadiene 8,343 0 317 0.05% 15.4% 8.4%
1,4-Dichloro-2-butene 1 34 299 0.05% 15.5% 22.9%
Hexachloroethane 326 3,600 162 0.03% 16.1% 30.9%
Biphenyl 5,934 12,000 161 0.03% 15.1% 24.7%
Butyl acrylate 1,424 0 146 0.02% 22.6% 56.2%
Ethylbenzene 8,549 0 106 0.02% 17.5% 26.9%
Ethylidene dichloride 6,281 14 101 0.02% 15.2% 25.5%
Vinyl acetate 82,127 449,649 89 0.01% 9.8% 14.7%
Hexachloro-1,3-butadiene 336 33,000 85 0.01% 15.2% 25.0%
Polycyclic aromatic compounds 32 19 49 0.01% 19.3% 41.8%
Ethylene 1,833,891 0 34 0.01% 14.8% 28.8%
Copper compounds 1,110 0 30 0.00% 15.1% 25.1%
Methyl acrylate 4,094 0 22 0.00% 22.4% 55.6%
1,2-Dichloroethylene 5,864 6,070 18 0.00% 15.3% 25.2%
Phthalic anhydride 3,352 2,120 13 0.00% 23.3% 67.9%
Mercury compounds 128 0 10 0.00% 15.1% 5.3%
Ammonia 65,618 1 7 0.00% 17.4% 36.7%
Cumene 21,748 0 5 0.00% 19.5% 53.0%
n-Hexane 26,069 0 4 0.00% 21.8% 54.0%
1,2-Butylene oxide 435 1 3 0.00% 15.1% 25.0%
CFC-12 14,760 0 2 0.00% 19.7% 54.5%
Dioxin and dioxin-like compounds 0 1 2 0.00% 17.9% 37.6%
Vinylidene chloride 3,483 360 2 0.00% 15.1% 27.1%
Bromine 24 0 2 0.00% 15.2% 25.0%
Xylene (mixed isomers) 8,049 0 2 0.00% 18.3% 29.9%
Ethylene glycol 5,763 0 2 0.00% 22.3% 55.5%
Styrene 31,338 314 1 0.00% 15.4% 21.0%
Propylene (Propene) 91,826 0 1 0.00% 13.6% 15.3%
1,1,1-Trichloroethane 35,416 29,600 1 0.00% 15.2% 25.0%
Chloromethane 53 0 1 0.00% 19.7% 54.4%
tert-Butyl alcohol 1,645 509 1 0.00% 12.8% 23.8%
1,4-Dichlorobenzene 24 4 0 0.00% 16.4% 10.0%
Lead 11 0 0 0.00% 15.7% 26.3%
Lead compounds 2 0 0 0.00% 20.9% 51.3%
Chloroethane (Ethyl chloride) 22,594 95 0 0.00% 15.5% 27.9%
Methanol 26,743 0 0 0.00% 19.8% 55.0%
Copper 21 0 0 0.00% 16.3% 9.9%
Toluene 11,663 0 0 0.00% 16.9% 18.5%
Zinc compounds 90 0 0 0.00% 21.1% 51.7%
Chlorodifluoromethane (HCFC-22) 24,104 0 0 0.00% 19.7% 54.5%
Methyl tert-butyl ether 141 0 0 0.00% 15.9% 21.6%
Polychlorinated biphenyls (PCBs) 0 90 0 0.00% 15.7% 26.3%
Phenol 160 0 0 0.00% 20.4% 54.5%
Dinitrobutyl phenol (Dinoseb) 9 0 0 0.00% 15.9% 21.6%
Acetophenone 45 0 0 0.00% 19.7% 54.8%
Chlorobenzene 193 2,157 0 0.00% 15.6% 18.1%
Dichloromethane 54 0 0 0.00% 18.6% 30.3%
Dichlorobenzene (mixed isomers) 63 4,500 0 0.00% 15.5% 25.7%
Anthracene 234 0 0 0.00% 15.7% 7.7%
Sodium nitrite 10 0 0 0.00% 13.9% 42.8%
1,2,4-Trimethylbenzene 2 0 0 0.00% 15.9% 21.2%
1,2,4-Trichlorobenzene 7 5,600 0 0.00% 15.7% 26.3%
Pentachloroethane 554 16,002 0 0.00% 0.0% 0.0%
Isoprene 99 0 0 0.00% 0.0% 0.0%
Phenanthrene 2 667 0 0.00% 0.0% 0.0%
trans-1,4-Dichloro-2-butene 4 0 0 0.00% 0.0% 0.0%
Pentachlorobenzene 0 2,783 0 0.00% 0.0% 0.0%

For explanations of most columns above, including the EJ Shares, see the technical notes.

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