Hydroquinone(HQ) Index items Index(%) Appearance White needle crystal Hydroquinone(HOC6H4OH) content 99.0~101.0 Melting point …
Hydroquinone(HQ) Index items Index(%) Appearance White needle crystal Hydroquinone(HOC6H4OH) content 99.0~101.0 Melting point 171°C~175°C Solubility Qualified Residue on ignition< 0.05 Heavy Metal(based on Pb)< 0.002 Iron(Fe) ≤ 0.002
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