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Classification & Labelling & PBT assessment

PBT assessment

Administrative data

PBT assessment: overall result

PBT status:
the substance is not PBT / vPvB

PBT and vPvB assessment

According to Annex XIII of the REACH Regulation (EC) No 1907/2006, a PBT substance has to fulfill all three of the criteria for persistence, bioaccumulation and toxicity, as listed in part 1 of Annex XIII, and a vPvB substance has to fulfill all criteria for persistence and bioaccumulation, as listed in part 2 of Annex XIII.

The principal fate of chloroform is temperature-dependent volatilization, due to its volatile nature. Chloroform emitted to air reacts primarily with photochemically generated hydroxyl radicals in the troposphere. (1H)Chloroform and (2H)Chloroform that partitions to the atmosphere has a mean half-life of 70 days.  Wet deposition is considered minor, as most will return to the air by

volatilisation.  Therefore, (1H)Chloroform and (2H)Chloroform are not considered to be persistent even if chemical degradation is not rapid, except under anaerobic methanogenic conditions. The principal removal process from water or soil is volatilization.

About 90% of chloroform in the environment is naturally produced. Chloroform ((1H)Chloroform and (2H)Chloroform ) does not accumulate in the environment as the low Log Kow indicates that the substances are unlikely to bioaccumulate to any significant extent in aquatic biota.

Chloroform ((1H)Chloroform and (2H)Chloroform ) fulfils the toxic (T) criterion being toxic for reproduction and after repeated exposure. Therefore, chloroform is not a PBT / vPvB.

(2H)Chloroform is not identified as PBT or as a vPvB substances on the basis of the relevant data provided and discussed.