GB/T 3654.6-2008
Ferroniobium - Determination of sulfur content - Combustion-iodate titrimetric method,methylene blue photometric method and infrared absorption method
HG/T 3449-2012
Chemical reagent-Methyl red
GB/T 1400-2014
Chemical reagent―Hexamethylene tetramine
GB/T 9015-1998
Hexamethylene tetramine for industrial use
KS M 8063-2015(2020)
Methyl red
GB/T 223.67-2008
Iron, steel and alloy - Determination of sulfur content -Methylene blue spectrophotometric method
HG/T 3449-1999
Chemical reagent Methyl red
HG/T 5842\uff5e5844-2021
20231398-T-606
Hexamethylenetramine for industrial use
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
T/HZAS 8-2020
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
SN/T 4585-2016
Determination of methylarsonic acid and dimethylarsinic acid residue in foods for export-LC-ICP-MS method
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
YS/T 574.7-2006
Chemical analysis of zirconium powder for electro-vacuum uses--The methylene blue photometric method for determination of sulphur