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This section has been established to help educate industry, government, and the public on what TLVs and BEIs are, and how TLVs and BEIs may best be used.
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PHTHALIC ANHYDRIDE
PHTHALIC ANHYDRIDE
CAS Number: 85-44-9
Synonyms: 1,3 Isobenzofurandione; Phthalic acid anhydride (PAN)
Molecular Formula: C8H4O3
Chemical Structure1:
TLV®-TWA, 0.002 mg/m3 (0.0003 ppm), Inhalable fraction and vapor
TLV-STEL, 0.005 mg/m3 (0.0009 ppm), Inhalable fraction and vapor
TLV-SL, 0.05 mg/100 cm2
Skin
DSEN
RSEN
A4-Not Classifiable as a Human Carcinogen
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