GB/T 1400-2014
Chemical reagent―Hexamethylene tetramine
GB/T 9015-1998
Hexamethylene tetramine for industrial use
GB/T 6730.34-2017(\u82f1\u6587\u7248)
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
KS H ISO 11216-2008(2023)
Modified starch-Determination of content of carboxymethyl groups in carboxymethyl starch
GB/T 15072.4-2008(\u82f1\u6587\u7248)
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 223.67-2008
Iron, steel and alloy - Determination of sulfur content -Methylene blue spectrophotometric method
GB/T 38401-2019(\u82f1\u6587\u7248)
皮革和毛皮 化学试验 二甲基甲酰胺含量的测定
20231398-T-606
Hexamethylenetramine for industrial use
GB/T 3654.6-2008
Ferroniobium - Determination of sulfur content - Combustion-iodate titrimetric method,methylene blue photometric method and infrared absorption method
GB/T 33317-2016
Plastics—Phenolic resins—Determination of hexamethylenetetramine content—Kjeldahl method,perchloric acid method and hydrochloric acid method
GB/T 1400-1993
Chemical reagent—Hexamethylene tetramine
GB 16191-1996
Health standard for trifluoromethyl hypofluorite in the air of workplace
GB 16236-1996
Health standard for cyclonite(RDX) in the air of workplace
YS/T 574.7-2009
Methods for chemical analysis of zirconium powder for electro-vacuum uses—The methylene blue spectrophotometric method for determination of sulphur
KS I ISO 17735-2022
Workplace atmospheres Determination of total isocyanate groups in air using 1 --(9 anthracenylmethyl)piperazine(MAP) reagent and liquid chromatography
SN/T 4585-2016
Determination of methylarsonic acid and dimethylarsinic acid residue in foods for export-LC-ICP-MS method
BS ISO 17735:2019
Workplace atmospheres. Determination of total isocyanate groups in air using 1-(9-anthracenylmethyl)piperazine (MAP) reagent and liquid chromatography
GB/T 4698.6-2019
Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 6:Determination of boron content—Methylene blue spectrophotometry and inductively coupled plasma atomic emission spectrometry
GB/T 3654.7-1983
Methods for chemical analysis of ferroniobium The methylene blue photometric method for the determination of sul fur content
GB/T 223.67-1989
Methods for chemical analysis of iron, steel and alloy—The reducing distillation-methylene blue photometric method for the determination of sulfur content