Phosgene and Solutions

Slightly soluble in water and slowly hydrolyzed by it freely soluble in benzene, toluene, glacial acetic acid, and most liquid hydrocarbons.1 

WARNING Paper soaked in alcoholic or carbon tetrachloride solution containing 10% of a mixture of equal parts of p-dimethylaminobenzaldehyde and colorless diphenylamine, and then dried, will turn from yellow to deep orange in the presence of approximately the maximum allowable concentration of phosgene, and should always be used where the generation of this gas is possible or suspected. See also Braker and Mossman. 

Do not breathe gas. Avoid contact of solutions with skin and eyes.1 TLV-TWA 0.1 ppm (0.40 mg/m3).4 

Phosgene can be vented into an ammonia scrubber5 or decomposed by bubbling into 20% NaOH.6 

Braker, W. and Mossman, A.L., Matheson Gas Data Book, 5th ed., Matheson Gas Products, East Rutherford, NJ, 1971. 

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