GB/T 1648-2013
H-acid monosodium salt(1-Naphthylamine-8-hydroxy-3,6-disulfonic acid monosodium salt)
GB/T 1648-2007
1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid monosodium salt(H-acid monosodium salt)
GB/T 1648-2001
H-acid monosodium salt(1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid monosodium salt)
DB37/T 2390-2013
GB/T 33792-2017
2,4-Diaminobenzenesulfonic acid sodium salt
HG/T 3387-2016
1-Naphthylamine-4-sulfonic acid sodium salt
T/QAS 086-2023
DB37/T 2392-2013
SY 5406-1992
HG/T 3387-2009
UNE 34210:1981
SODIUM CHLORIDE. DETERMINATION OF FLUORIDE CONTENT. PHOTOMETRIC METHOD WITH SODIUM 2-(SULFOPHENYLAZO)-1,8 DIHYDROXYNAPHTHALENE-3,6 DISULFONATE (SPADNS).
GB/T 15437-1995
Ambient air--Determination of ozone--Indigo disulphonate spectrophotometry
HG/T 3387-1999
1-Naphthylamine-4-Sulfonic Acid Sodium Salt
HJ 504-2009
T/CRIAC 0058-2021
HG/T 2261-2006
HG/T 2261-2005
Photographic chemicals sodium di-(2-ethyl-hexyl) succinate sulfonate
GB/T 16123-1995
Workplace air—Determination of methyl iodide—1,2-naphthaquinone-4-sodium sulfonate spectrophotometric method
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)
HG/T 3463-2000
Chemical reagent Arsenazo Ⅲ