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4,4'-Diamino-2,2'-stilbenedisulfonic acid

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4,4'-Diamino-2,2'-stilbenedisulfonic acid Basic information

Product Name:
4,4'-Diamino-2,2'-stilbenedisulfonic acid
Synonyms:
  • diaminostilbenedisulfonicacid
  • 4,4'-Diaminodiphenylethylene-2,2'-disulfonic acid
  • 4',4" Diamino stillbene 2'2" disulphonic acid
  • 1,2-bis(4-amino-2-sulfophenyl)ethene
  • 4,4'-Diamino-2,2'-stibenedisulfonic acid
  • 4,4'-DIAMINO-2,2'-STILBENEDISULFONIC ACI D, TECH., 85%
  • 2,2’-(1,2-ethenediyl)bis[5-amino-benzenesulfonicaci
  • 2,2’-(1,2-ethenediyl)bis[5-amino-Benzenesulfonicacid
CAS:
81-11-8
MF:
C14H14N2O6S2
MW:
370.4
EINECS:
201-325-2
Product Categories:
  • Stilbenes
  • Fluorescent Labels & Indicators
  • Intermediates of Dyes and Pigments
Mol File:
81-11-8.mol
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4,4'-Diamino-2,2'-stilbenedisulfonic acid Chemical Properties

Melting point:
300 °C
Density 
1.4732 (rough estimate)
refractive index 
1.6510 (estimate)
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
pka
-1.58±0.50(Predicted)
form 
Crystalline Powder
color 
Cream to yellow-brown
Water Solubility 
<0.1 g/100 mL at 23 ºC
Merck 
14,595
BRN 
629516
Stability:
Stable. Combustible. Incompatible with iron, strong oxidizing agents.
CAS DataBase Reference
81-11-8(CAS DataBase Reference)
EPA Substance Registry System
Amsonic acid (81-11-8)
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Safety Information

Hazard Codes 
C,Xn
Risk Statements 
34-22-36/37/38-20/21/22
Safety Statements 
24/25-45-36/37/39-26-22
RIDADR 
UN 2583
RTECS 
WJ6603000
TSCA 
Yes
HS Code 
29215900
Hazardous Substances Data
81-11-8(Hazardous Substances Data)

MSDS

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4,4'-Diamino-2,2'-stilbenedisulfonic acid Usage And Synthesis

Chemical Properties

Light Yellow Powder

Uses

In manufacture of dyes, bleaching agents.

General Description

Odorless yellowish microscopic needles or cream-colored powder. pH approximately 4.3 at 30 g/L water (suspension).

Air & Water Reactions

Insoluble in water.

Reactivity Profile

4,4'-Diamino-2,2'-stilbenedisulfonic acid is incompatible with iron. 4,4'-Diamino-2,2'-stilbenedisulfonic acid forms sparingly water-soluble, crystalline salts with many bisquaternary ammonium bases.

Fire Hazard

Flash point data for 4,4'-Diamino-2,2'-stilbenedisulfonic acid are not available; however, 4,4'-Diamino-2,2'-stilbenedisulfonic acid is probably combustible.

4,4'-Diamino-2,2'-stilbenedisulfonic acidSupplier

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