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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Classification & Labelling & PBT assessment

PBT assessment

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Administrative data

PBT assessment: overall result

PBT status:
the substance is not PBT / vPvB


Reaction mass of CXN1-55 was found readily biodegradable. Substance therefore "not (v)P)".


Reaction mass of CXN1-55 has a log Kow =< 4.5. Substance therefore "not (v)B".


Based on the results of a prenatal developmental study (OECD 414) together with the results of a ninety days repeated dose toxicity study, Reaction mass of CXN1-55 is classified as reproductive toxicant category 2 according to Regulation (EC) No. 1272/2008 on Classification, Labelling and Packaging of Substances and Mixtures. This implies that Reaction mass of CXN1-55 fulfils the toxicity criterion (T).

Substances are considered as PBT or vPvB substances when they fulfil the criteria for all three inherent properties P, B and T or both of the inherent properties vP and vB, respectively. As the test substance is found not to fulfill the criteria for the properties P and B, Reaction mass of CXN1-55 is not considered PBT or vPvB.