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3,4-Diaminobenzenesulfonic acid Structure

3,4-Diaminobenzenesulfonic acid

Chemical Properties

Melting point -12 °C
Boiling point 178-179 °C3 mm Hg(lit.)
Density  0.936 g/mL at 25 °C(lit.)
refractive index  n20/D 1.441(lit.)
Flash point >230 °F
storage temp.  Keep in dark place,Sealed in dry,Room Temperature
solubility  hexane, toluene, ethanol and acetone: soluble
pka -0.52±0.50(Predicted)
form  Solid
color  Dark Brown
Dielectric constant 4.5（30℃）
CAS DataBase Reference 7474-78-4(CAS DataBase Reference)
FDA UNII J9E8XPC6K2
EPA Substance Registry System Benzenesulfonic acid, 3,4-diamino- (7474-78-4)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H302-H315-H319-H335
Precautionary statements P261-P305+P351+P338
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36
WGK Germany  1
RTECS  VS1150000
NFPA 704:
1
1 0

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