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Waiving of study:
In accordance with column 2 of REACH Annex X, a carcinogenicity study (required in section 8.9.1) does not need to be conducted as disodium disilicate (delta-crystalline) is not classified as mutagen category 3. There is no evidence from the repeated dose studies that the substance is able to induce hyperplasia and/or pre-neoplastic lesions.

Key value for chemical safety assessment

Justification for classification or non-classification

Additional information