HG/T 3678-2010
p-Sulfanilic acid
HG/T 6036-2022
HG/T 2746-2010
Sodium sulphanilate
GB/T 33792-2017
2,4-Diaminobenzenesulfonic acid sodium salt
HG/T 4714-2014
HG/T 3678-2000
p-Sulfanilic Acid
HG/T 3614-1999
Standard Test Method for Sulfonic and Sulfuric Acids in Alkylbenzene Sulfonic Acids
HG/T 2746-1996
DB32/T 1438-2009
GB 1261-1977
Basic chemical reagents(volumetry)--Anhydrous paramino-phenyl-sulfonic acid
DB34/T 2372-2015
HG/T 5623-2019
T/CPCIF 0160-2021
GB/T 6730.37-2017
Iron ores—Determination of cobalt content—4-[(5-chloro-2-pyridyl)azo]-1,3-diamino-benzene spectrophotometric method
HG/T 5694\uff5e5697-2020
DB32/T 1167-2007
GB/T 12687.5-1990
Chemical analysis of nitrate of rare earth for agriculture—Determination of chrome content-sys—Diphenyl carbazide spectrophotometric method
GB/T 15507-1995
Water quality--Determination of hydrazine--p-Dimetylaminobenzaldehyde spectrophotometric method
HJ 674-2013
GB/T 14375-1993
Water quality--Determination of monomethyl hydrazine--p-Dimethylaminobenzaldehyde spectrophotometric method