4-amino benzene sulphonic acid, 4-Amino Antipyrine, LABORATORY CHEMICALS

SPECIFICATION
( Reagent for nitrites )
C₆H₇NO₃S M.W. 173.19
Minimum assay ( acidimetric )	99%
Maximum Limits of Impurities :
Chloride ( Cl )	0.002%
Sulphate ( SO₄ )	0.005%
Nitrite ( NO₂ )	0.00005%
Heavy metals ( as Pb )	0.01%
Sulphated ash	0.01%
Water	0.03%