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No study has been performed on tetrairon tris(pyrophosphate) for the endpoint 'viscosity'. An adaptation from the standard testing regime is justified on the following basis:
Study not scientifically justified according to Regulation (EC) No. 1907/2006 (REACH), 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 tetrairon tris(pyrophosphate) is solid at room temperature no study is necessary.

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