Open Table
Thermoplastic Chemicala Vessel capacity (cubic meters) Vapor pressureb (kilopascals)
ASA/AMSANc styrene/acrylonitrile mixture ≥3.78 ≥0.47
    acrylonitrile ≥75.7 ≥1.62
Polystyrene, continuous processes all chemicals <75.7 ≥14.2
    ≥75.7
    ≥1.9
Nitrilec acrylonitrile ≥13.25 ≥1.8

aVessel capacity and vapor pressure criteria are specific to the listed chemical or to “all chemicals,” as indicated.

bMaximum true vapor pressure of total organic HAP at storage temperature.

cThe applicability criteria in Table 2 of this subpart shall be used for chemicals not specifically listed in this table (i.e., Table 3).

[64 FR 11553, Mar. 9, 1999]


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