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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Diss Factsheets

Administrative data

Description of key information

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion
Endpoint conclusion:
no adverse effect observed (not sensitising)
Additional information:

Thirty male guinea pigs were divided into 3 groups of 10: negative control using 0.05 ml of saline, positive control using 0.05 ml of 0.3% solution of dinitr-chlorobenzene, and 0.05 ml of a 5% solution of 2 -NP at the begining of the test. At 48 hours the animals were injected with 0.1 ml of test solution, 2 -3 times/week until 10 injections were made. In the test group, only two injection were made with the 5% of the test solution due to visible necrosis at the test site. The rest of the injections were made with 1% test material.

After a rest period of 2 weeks the test animals were challenged with 0.1 ml of 1% test solution. None of the test animals showed a positive response. The negative and positive controls gave the appropriate response.

Migrated from Short description of key information:
One key study was identified regarding the sensitization potential of 2-nitropropane (2-NP) in the guinea pig.

Justification for classification or non-classification

None of the guinea pigs show a skin sensitization reaction when challenged with 2 -nitropropane, therefore 2 -NP is not classifiable under GHS