GB/T 33792-2017
2,4-Diaminobenzenesulfonic acid sodium salt
HG/T 5697-2020
p-Sodium sulphonate benzaldehyde
HG/T 4714-2014
HG/T 2746-2010
Sodium sulphanilate
DB37/T 2390-2013
GB/T 11989-2020
Surface active agents—Test methods of technical sodium alkylarylsulphonates (excluding benzene derivatives)
HG/T 5694\uff5e5697-2020
GB/T 15437-1995
Ambient air--Determination of ozone--Indigo disulphonate spectrophotometry
DB23/T 2077-2018
DB34/T 2372-2015
HG/T 2746-1996
UNE 34210:1981
SODIUM CHLORIDE. DETERMINATION OF FLUORIDE CONTENT. PHOTOMETRIC METHOD WITH SODIUM 2-(SULFOPHENYLAZO)-1,8 DIHYDROXYNAPHTHALENE-3,6 DISULFONATE (SPADNS).
HJ 504-2009
GB/T 5178-2008
Determination of mean relative molecular mass for technical straight-chain sodium alkylbenzenesulfonates - Gas-liquid chromatographic method
HG/T 2261-2006
HG/T 2261-2005
Photographic chemicals sodium di-(2-ethyl-hexyl) succinate sulfonate
DB12/T 101.073-2003
DL/T 502.20-2006
Analytical methods of steam and water in power plants Part 20:Determination of dissolved oxygen (Colorimetric method using sodium indigo disulphonate)
DL/T 502.19-2006
Analytical methods of steam and water in power plants Part 19:Determination of dissolved oxygen (Colorimetric method using sodium indigo disulphonate glucose)
HG/T 3463-2000
Chemical reagent Arsenazo Ⅲ