连甲基二苯检测标准

铁矿石 铬含量的测定 二苯基碳酰二肼分光光度法

铁矿石 锡含量的测定 邻苯二酚紫-溴化十六烷基三甲胺分光光度法

Chemical reagent—N,N-dimethyl-p-phenylenediamine dihydrochloride

D-dihydrophenylglycine methyl sodium Dane salt

Rubber antioxidant—N-1,3-dimethylbutyl-N’-phenyl-p-phenylenediamine（6PPD）

Rubber antioxidant—N,N'-bis(1-methylpropyl)-p-phenylenediamine

Blend of rubber antioxidant-N-( 1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine and N-(1,4-dimethylpentyl)-N'-phenyl-p-phenylenediamine (6PPD/7PPD)

Food contact materials-Paper,regenerated fibre-Determination of benzophenone and 4-methylbenzophenone-Gas chromatography-mass spectrometer

Food contact materials - Auxiliary material - Determination of benzophenone and 4-methylbenzophenone in printing ink-Gas chromatography mass spectrometer

贵金属合金化学分析方法 钯、银合金中钯量的测定 二甲基乙二醛肟重量法

Rubber antioxidant-N,N'-bis(1,4-dimethylpentyl)-p-phenylenediamine (77PD)

Determination of N,N-bis(2-hydroxyethyl)-p-phenylenediamine,N,N-dimethyl-p-phenylenediamine,N,N-diethyl-p-phenylenediamine,N-phenyl-p-phenylenediamine and their salts in oxidative hair dyes for export-High performance liquid chromatography

Rubber antioxidant-N-(1,4-dimethylpentyl)-N'-phenylp-phenylenediamine(7PPD)