4,4'-Diamino-2,2'-stilbenedisulfonic acid CAS#81-11-8

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

density 

1.4732 (rough estimate)

vapor pressure 

1.3hPa at 25℃

refractive index 

1.6510 (estimate)

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

solubility 

Aqueous Base (Slightly)

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.

InChI

1S/C14H14N2O6S2/c15-11-5-3-9(13(7-11)23(17,18)19)1-2-10-4-6-12(16)8-14(10)24(20,21)22/h1-8H,15-16H2,(H,17,18,19)(H,20,21,22)/b2-1+

InChIKey

REJHVSOVQBJEBF-OWOJBTEDSA-N

SMILES

Nc1ccc(\C=C\c2ccc(N)cc2S(O)(=O)=O)c(c1)S(O)(=O)=O

LogP

-1.7--1.42 at 25℃

CAS DataBase Reference

81-11-8(CAS DataBase Reference)

EPA Substance Registry System

Amsonic acid (81-11-8)

Safety Information

Risk Statements 

34-22-36/37/38-20/21/22

Safety Statements 

24/25-45-36/37/39-26-22

RIDADR 

UN 2583

WGK Germany 

WGK 1

RTECS 

WJ6603000

TSCA 

TSCA listed

HS Code 

29215900

Storage Class

8A - Combustible corrosive hazardous materials

Hazard Classifications

Acute Tox. 4 Oral

Hazardous Substances Data

81-11-8(Hazardous Substances Data)