What is the threshold limit value (TLV) for a product of PHTHALIC ANHYDRIDE?
Official USCG Answer & Rule Citation
Correct Answer: Option A — 1 ppm
Phthalic anhydride has a Threshold Limit Value (TLV) of 1 ppm. Deck officers must consult the CHRIS Manual and 46 CFR to verify permissible exposure limits and ensure adequate personal protective equipment during handling.
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