HG/T 2745-2023
HG/T 2745-2023
HG/T 2745-2023
H-acid monosodium salt(1-Naphthylamine-8-hydroxy-3,6-disulfonic acid monosodium salt)
HG/T 2745-2023
2-Hydroxy-3-naphthoic acid
HG/T 2745-2023
HG/T 2745-2023
1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid monosodium salt(H-acid monosodium salt)
HG/T 2745-2023
H-acid monosodium salt(1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid monosodium salt)
HG/T 2745-2023
Chemical reagent Arsenazo Ⅲ
HG/T 2745-2023
HG/T 2745-2023
HG/T 2745-2023
SODIUM CHLORIDE. DETERMINATION OF FLUORIDE CONTENT. PHOTOMETRIC METHOD WITH SODIUM 2-(SULFOPHENYLAZO)-1,8 DIHYDROXYNAPHTHALENE-3,6 DISULFONATE (SPADNS).