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7474-78-4

Name 3,4-Diaminobenzenesulfonic acid
CAS 7474-78-4
EINECS(EC#) 203-672-5
Molecular Formula C6H8N2O3S
MDL Number MFCD00270799
Molecular Weight 188.2
MOL File 7474-78-4.mol
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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.)
Fp  >230 °F
storage temp.  Keep in dark place,Sealed in dry,Room Temperature
solubility  hexane, toluene, ethanol and acetone: soluble
form  Solid
pka -0.52±0.50(Predicted)
color  Dark Brown
Dielectric constant 4.5（30℃）
CAS DataBase Reference 7474-78-4(CAS DataBase Reference)
EPA Substance Registry System 7474-78-4(EPA Substance)

Safety Data

Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
WGK Germany  1
RTECS  VS1150000

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