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4,4'-BIS(4-AMINO-1-NAPHTHYLAZO)-2,2'-STILBENEDISULFONIC ACID Structure

4,4'-BIS(4-AMINO-1-NAPHTHYLAZO)-2,2'-STILBENEDISULFONIC ACID

Chemical Properties

Melting point >300°C
Density  1.2173 (rough estimate)
refractive index  1.7000 (estimate)
storage temp.  Hygroscopic, Refrigerator, Under Inert Atmosphere
solubility  Basic Methanol (Slightly), DMSO (Slightly, Heated)
form  Solid
pka -1.33±0.50(Predicted)
Colour Index  24860
color  Black
Stability Hygroscopic
EPA Substance Registry System Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[(4-amino-1-naphthalenyl)azo]- (5463-64-9)

Safety

Symbol(GHS) GHS hazard pictograms
Signal wordWarning
Hazard statements H315-H319
Precautionary statements P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
Risk Statements  36/37/38
Safety Statements  24/25
HS Code  29270000
NFPA 704:
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