Tobias Acid
2-Amino-1-Naphthalenesulfonic Acid
Molecular formula: C10H9NO3S
Molecular weight: 223.25
CAS NO.: 81-16-3
EINECS: 201-331-5
Appearance: white to pink crystal
Specification:
Total amido (dry): 98.5% min
2-naphthylamine: 0.10% max
Moisture: 0.5% max
Insoluble matter: 1.00% max
Property: White crystal, melting point is 272℃. Difficultly soluble in water, good solubility in hot water. Easily soluble in alkali-creating correspondence sulfonate, then coupling to lithol scarlet with 2-naphthol.
Usage: For dyestuff intermediates, J-Acid, Lithol Scarlet, Naphthol and Reactive Orange38, Red141, 196, 220, etc.
Packing: 25 kg bag