GB/T 37640-2019
Determination of chloroacetaldehyde,2,4-dihydroxy-3-methylbenzaldehyde,crotonaldehyde,acetophenone,2-pentylidenecyclohexanone and glutaral in cosmetics—High performance liquid chromatography
GB/T 37640-2019
GB/T 37640-2019
GB/T 37640-2019
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
GB/T 37640-2019
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
GB/T 37640-2019
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
GB/T 37640-2019
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
GB/T 37640-2019
GB/T 37640-2019
Water quality--Determination of monomethyl hydrazine--p-Dimethylaminobenzaldehyde spectrophotometric method
GB/T 37640-2019
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
GB/T 37640-2019
GB/T 37640-2019
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
GB/T 37640-2019
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
GB/T 37640-2019
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
GB/T 37640-2019
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
GB/T 37640-2019
p-Dimethylaminobenzaldehyde
GB/T 37640-2019
Test method of purified terephthalic acid (PTA) for industrial use―Part 1:Determination of concentrations of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL)
GB/T 37640-2019
GB/T 37640-2019
p-Tolualdehyde
GB/T 37640-2019