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Table 5 to Subpart U of Part 63—Known Organic HAP Emitted From the Production of Elastomer Products

Known Organic HAP Emitted From the Production of Elastomer Products

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Displayed edition2026-04-27
Last updated2026-04-27

Table 5 to Subpart U of Part 63—Known Organic HAP Emitted From the Production of Elastomer Products

[Known organic HAP emitted from the production of elastomer products]

Organic HAP/Chemical name (CAS No.)Elastomer product/subcategory
BREPIEPRHYPNEONBLNBRPBR/SBRSPSRSBLSBRE
Acrylonitrile (107131)XX
1,3 Butadiene (106990)XXXXX
Carbon DisulfideXXXXX
Carbon Tetrachloride (56235)X
Chlorobenzene (108907)X
Chloroform (67663)X
Chloroprene (126998)X
Epichlorohydrin (106898)X
Ethylbenzene (100414)XX
Ethylene Dichloride (107062)X
Ethylene Oxide (75218)XX
Formaldehyde (50000)XX
Hexane (110543)XXX
Methanol (67561)XX
Methyl Chloride (74873)XX
Propylene Oxide (75569)X
Styrene (100425)XXX
Toluene (108883)XXXX
Xylenes (1330207)X
Xylene (m-) (108383)X
Xylene (o-) (95476)X
Xylene (p-) (106423)X
CAS No. = Chemical Abstract Service Number.
BR = Butyl Rubber.
EPI = Epichlorohydrin Rubber.
EPR = Ethylene Propylene Rubber.
HYP = Hypalon TM.
NEO = Neoprene.
NBL = Nitrile Butadiene Latex.
NBR = Nitrile Butadiene Rubber.
PBR/SBRS = Polybutadiene and Styrene Butadiene Rubber by Solution.
PSR = Polysulfide Rubber.
SBL = Styrene Butadiene Latex.
SBRE = Styrene Butadiene Rubber by Emulsion.

[76 FR 22594, Apr. 21, 2011]