Product

2,2'-Benzidinedisulfonic acid

CAS No.：117-61-3

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2,2'-Benzidinedisulfonic acid Basic information

Product Name:	2,2'-Benzidinedisulfonic acid
Synonyms:	2,2'-BENZIDINEDISULFONIC ACID;2,2'-Disulfo-4,4'-diaminobiphenyl;2,2'-disulfobenzidine;2,2'-DISULFONIC ACID BENZIDINE;1’-biphenyl)-2,2’-disulfonicacid,4,4’-diamino-(;1’-biphenyl]-2,2’-disulfonicacid,4,4’-diamino-[;1’-Biphenyl]-2,2’-disulfonicacid,4,4’-diamino-[1;BDSA
CAS:	117-61-3
MF:	C12H12N2O6S2
MW:	344.36
EINECS:	204-200-0
Product Categories:	Intermediates of Dyes and Pigments;Biphenyl & Diphenyl ether
Mol File:	117-61-3.mol

2,2'-Benzidinedisulfonic acid Chemical Properties

Melting point	175°C
Boiling point	638.25℃[at 101 325 Pa]
density	1.5417 (rough estimate)
vapor pressure	0Pa at 25℃
refractive index	1.6510 (estimate)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
form	Powder
pka	-1.85±0.50(Predicted)
color	Dark purple
Water Solubility	<0.1 g/100 mL at 20 ºC
LogP	1.102 at 24℃
CAS DataBase Reference	117-61-3(CAS DataBase Reference)
EPA Substance Registry System	[1,1'-Biphenyl]-2,2'-disulfonic acid, 4,4'-diamino- (117-61-3)

Safety Information

Hazard Codes	Xi
Risk Statements	20/21/22-37/38-36-36/37/38
Safety Statements	22-26-36-60-37
RTECS	DV5230000
TSCA	Yes
HS Code	29215900
Toxicity	eye-rbt 500 mg/24H SEV 28ZPAK -,191,72

MSDS Information

Provider	Language
2,2'-Benzidinedisulfonic acid	English
ALFA	English

2,2'-Benzidinedisulfonic acid Usage And Synthesis

Chemical Properties	PURPLE CRYSTALLINE POWDER
Uses	4,4'-Diaminobiphenyl-2,2'-disulfonic acid hydrate is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and Dyestuff.
General Description	Leaflets or prisms or light purple powder.
Air & Water Reactions	Insoluble in water.
Fire Hazard	Flash point data for 2,2'-Benzidinedisulfonic acid are not available; however, 2,2'-Benzidinedisulfonic acid is probably combustible.
Flammability and Explosibility	Nonflammable
Safety Profile	A severe eye irritant. When heated to decomposition it emitsvery toxic fumes of SOx and NOx.

2,2'-Benzidinedisulfonic acid Preparation Products And Raw materials

Preparation Products

REACTIVE ORANGE 84-->ACID RED 97 (C.I. 22890)-->4,4'-Bis[(2-methyl-1H-indol-3-yl)azo]-1,1'-biphenyl-2,2'-disulfonic acid disodium salt-->trisodium 4-[[7-[(2,4-diaminophenyl)azo]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-4'-[(4-hydroxyphenyl)azo][1,1'-biphenyl]-2,2'-disulphonate-->Acid Orange 56-->Mordant Yellow 26-->4,4'-bis[[2-hydroxy-3-[(phenylamino)carbonyl]-1-naphthyl]azo][1,1'-biphenyl]-2,2'-disulphonic disodium acid-->Acid Red 444-->Acid Yellow 42

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