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Overview ISO 7431-1:2024 - "Thiourea for industrial use - Part 1: Test methods" defines standardized laboratory test methods for assessing the quality and purity of industrial thiourea. The first edi…
1 Scope The document specifies test methods for industrial thiourea properties, such as thiourea content, water insoluble substance, ignition residue, initial melting point, turbidity, thiocyanate co…