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Administrative data

Description of key information

Several reliable studies are available for skin irritation. The study by Freeman (1989) is considered the key study as it is performed according to OECD guidelines and to GLP. Studies performed according to other guidelines include the use of abraded skin and under these conditions some mild irritation is observed but this method should not be used for classification purposes.
STPP is not classified as a skin irritant
In the eye irritation tests ocular effects were limited to conjunctival reactions following exposure to STPP as a powder, and this substance is not classified as an eye irritant

Key value for chemical safety assessment

Skin irritation / corrosion

Endpoint conclusion
Endpoint conclusion:
no adverse effect observed (not irritating)

Eye irritation

Endpoint conclusion
Endpoint conclusion:
no adverse effect observed (not irritating)

Additional information

Justification for classification or non-classification