1,2-diacetoxybut-3-ene

PBT assessment

PBT assessment: overall result

Reference

Reference 1

Name:

1,2-Diacetoxybut-3-ene

Type of composition:

boundary composition of the substance

State / form:

liquid

Reference substance:

1,2-Diacetoxybut-3-ene

Reference 2

Name:

1,2-Diacetoxybut-3-ene

Type of composition:

legal entity composition of the substance

State / form:

liquid

Reference substance:

1,2-Diacetoxybut-3-ene

PBT status:

the substance is not PBT / vPvB

Justification:

Comparison with the Criteria of Annex XIII. An assessment of the PBT/vPvB status of the test substance has been made using all available data.

Persistence Assessment. The substance is considered to be readily-biodegradable, but not fulfilling the 10-day window criteria. It is unlikely that the test substance would persist in an aquatic environment as evidenced by the significant carbon dioxide evolution observed and hence not considered as P or vP in this assessment.

Bioaccumulation Assessment: No studies to assess bioaccumulation in aquatic species have been conducted. The low log kow value (<4.5) indicates that the test material is unlikely to be bioaccumulative in aquatic systems, and as such is considered to have a low potential for bioaccumulation.

Toxicity assessment: The acute toxicity for all three trophic levels are much higher than the PBT screening criterion of < 0.1 mg/L (Fish the most sensitive species with a 96hr LC50 of 33.5 mg/L).

The overall conclusions, based on the present available data, are that the (screening) criteria for PBT/vPvB, as outlined in Annex XIII of REACH, are not met and that further testing in the scope of the final PBT assessment is not considered to be required.