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Administrative data

Description of key information

Hexafluorosilicic acid is listed in Table 3 of Annex VI to the CLP Regulation. (in force from 1 March 2018) as "Skin Corr. 1B (H314). No additional data are available and none are required.

Key value for chemical safety assessment

Skin irritation / corrosion

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (corrosive)

Eye irritation

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (irritating)

Respiratory irritation

Endpoint conclusion
Endpoint conclusion:
no study available

Additional information

Hexafluorosilicic acid is a strong acid that can corrode glass and stoneware (NTP: Haneke & Carson, 2001). Further testing for skin and irritation/damage was waived based on GLP Regulation Annex VII, column 2 specific rules of adaptation of 18 December 2006.

Supporting information from a non-standard histological investigation in the skin of rats, guinea-pigs and pigs also indicate a corrosive effect which may be delayed and is more marked in damaged skin (Alhassan & Zink, 1982). Human experience additionally indicates that the substance is likely to be corrosive.

Justification for classification or non-classification

Hexafluorosilicic acid is a strong acid which is classified as H314 (Causes severe skin burns and eye damage) according CLP Regulation (No. 1272/2008 of 16 December 2008).