Photography. Processing chemicals. Specifications for 1-phenyl-3-pyrazolidinone

Photography. Processing chemicals. Specifications for 1-phenyl-3-pyrazolidinone

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1   Scope

This International Standard establishes criteria for the purity of photographic-grade 1-phenyl-3-pyrazolidinone (phenidone) and specifies the test methods to be used to determine the purity.