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No study has been performed on disodium hydrogenorthophosphate for the endpoint 'viscosity'. An adaptation from the standard testing regime is justified on the following basis:
Study not scientifically justified according to Annex XI, Section 2: testing is technically not possible. According to the relevant OECD guideline (OECD 114) a study cannot be conducted on a substance that is a solid at room temperature, as disodium hydrogenorthophosphate is solid at room temperature a study is not technically feasible.

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