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2,2'-Benzidinedisulfonic acid

2,2'-Benzidinedisulfonic acid structure

CAS No.: 117-61-3

Chemical Name:: 2,2'-Benzidinedisulfonic acid

Synonyms: BDSA;BENZIDINE 2,2 DISULFONIC ACID;70.0%(T);2,2'-Benzidinedisulf;Benzidine-2,2'-disuL;2,2'-disulfobenzidine;2,2’-disulfo-benzidin;6,6'-bimetanilic acid;BENZIDINEDISULPHONICACID;BENZIDINE 2-2'DISUFONIC ACID

CBNumber:: CB3732926

Molecular Formula:: C12H12N2O6S2

Molecular Weight:: 344.36

MDL Number:: MFCD00041885

MOL File:: 117-61-3.mol

MSDS File:: SDS

Last updated:2026-01-13 11:17:38

Product description	Number	Pack Size	Price
2,2'-Benzidinedisulfonic Acid (contains 30% Water at maximum) >70.0%(T)	B0395	25g	$32
2,2'-Benzidinedisulfonic Acid (contains 30% Water at maximum) >70.0%(T)	B0395	500g	$197
4,4''-Diamino-[1,1''-biphenyl]-2,2''-disulfonicAcid	D416193	250mg	$45
4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid 95+%	099316	100g	$159
2,2'-BENZIDINEDISULFONIC ACID 95.00%	CHM0007493	5G	$818.75
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2,2'-Benzidinedisulfonic acid 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
pka	-1.85±0.50(Predicted)
form	Powder
color	Dark purple
Water Solubility	<0.1 g/100 mL at 20 ºC
InChI	InChI=1S/C12H12N2O6S2/c13-7-1-3-9(11(5-7)21(15,16)17)10-4-2-8(14)6-12(10)22(18,19)20/h1-6H,13-14H2,(H,15,16,17)(H,18,19,20)
InChIKey	MBJAPGAZEWPEFB-UHFFFAOYSA-N
SMILES	C1(C2=CC=C(N)C=C2S(O)(=O)=O)=CC=C(N)C=C1S(O)(=O)=O
LogP	1.102 at 24℃
CAS DataBase Reference	117-61-3(CAS DataBase Reference)
FDA UNII	ALF643N2EQ
EPA Substance Registry System	[1,1'-Biphenyl]-2,2'-disulfonic acid, 4,4'-diamino- (117-61-3)

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H302+H312+H332-H315-H319-H335

Precautionary statements

P280a-P304+P340-P305+P351+P338-P405-P501a-P261-P264-P270-P271-P280-P301+P312+P330-P302+P352+P312+P362+P364-P304+P340+P312-P305+P351+P338+P337+P313-P501

Hazard Codes

Risk Statements

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

Safety Statements

22-26-36-60-37

RTECS

DV5230000

TSCA

TSCA listed

HS Code

29215900

Toxicity

eye-rbt 500 mg/24H SEV 28ZPAK -,191,72

NFPA 704

	0
0		0

2,2'-Benzidinedisulfonic acid price More Price(16)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
TCI Chemical	B0395	2,2'-Benzidinedisulfonic Acid (contains 30% Water at maximum) >70.0%(T)	117-61-3	25g	$32	2026-03-19	Buy
TCI Chemical	B0395	2,2'-Benzidinedisulfonic Acid (contains 30% Water at maximum) >70.0%(T)	117-61-3	500g	$197	2026-03-19	Buy
TRC	D416193	4,4''-Diamino-[1,1''-biphenyl]-2,2''-disulfonicAcid	117-61-3	250mg	$45	2021-12-16	Buy
Matrix Scientific	099316	4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid 95+%	117-61-3	100g	$159	2021-12-16	Buy
American Custom Chemicals Corporation	CHM0007493	2,2'-BENZIDINEDISULFONIC ACID 95.00%	117-61-3	5G	$818.75	2021-12-16	Buy

Product number	Packaging	Price	Buy
B0395	25g	$32	Buy
B0395	500g	$197	Buy
D416193	250mg	$45	Buy
099316	100g	$159	Buy
CHM0007493	5G	$818.75	Buy

2,2'-Benzidinedisulfonic acid Chemical Properties,Uses,Production

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. Benzidine-2,2' -disulfonic acid is used in the production of yellow and red azo dyes.

Production Methods

2,2'-Benzidinedisulfonic acid is made from the potassium or sodium salt of 3- nitrobenzenesulfonic acid by a gradual reduction using zinc dust and sodium hydroxide solution in a dilute aqueous solution. The product is subsequently rearranged using hydrochloric acid or dilute sulfuric acid. Electrochemical or catalytic reductions are also possible.

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

Non flammable

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

Raw materials

3-NITROBENZENESULFONIC ACID

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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2,2'-Benzidinedisulfonic acid Suppliers

Global( 276)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Qingdao RENAS Polymer Material Co., Ltd.	+86-0532-86867058 +86-18562606086	sales@qdrenas.com	China	1066	58
Capot Chemical Co.,Ltd.	+86-（0）57185586718; +8613336195806	sales@capot.com	China	29640	60
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21591	55
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29820	58
Shandong chuangyingchemical Co., Ltd.	18853181302	sale@chuangyingchem.com	CHINA	5906	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49977	58
Zhengzhou Alfa Chemical Co.,Ltd	+8618530059196	sale04@alfachem.cn	China	9546	58
Shanghai Daeyeon Chemicals Co., Ltd	021-64478606 +8615900664856	daeyeon001@vip.163.com	China	2062	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +8618949823763	sales@tnjchem.com	China	34563	58
Shaanxi Dideu Medichem Co. Ltd	+86-029-89586680 +86-18192503167	1026@dideu.com	China	10000	58

Supplier	Advantage
Qingdao RENAS Polymer Material Co., Ltd.	58
Capot Chemical Co.,Ltd.	60
Henan Tianfu Chemical Co.,Ltd.	55
career henan chemical co	58
Shandong chuangyingchemical Co., Ltd.	58
CONIER CHEM AND PHARMA LIMITED	58
Zhengzhou Alfa Chemical Co.,Ltd	58
Shanghai Daeyeon Chemicals Co., Ltd	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Shaanxi Dideu Medichem Co. Ltd	58

View Lastest Price from 2,2'-Benzidinedisulfonic acid manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2026-04-22	Benzidine-2,2'-disulfonic acid 117-61-3	US $0.00 / kg	20kg	99%	20 tons	Qingdao RENAS Polymer Material Co., Ltd.
	2019-07-06	2,2'-Benzidinedisulfonic acid 117-61-3	US $1.00 / kg	1kg	99%	Customized	Career Henan Chemical Co

Benzidine-2,2'-disulfonic acid
117-61-3
US $0.00 / kg
99%
Qingdao RENAS Polymer Material Co., Ltd.

2,2'-Benzidinedisulfonic acid
117-61-3
US $1.00 / kg
99%
Career Henan Chemical Co

2,2'-Benzidinedisulfonic acid Spectrum

2,2'-Benzidinedisulfonic acid(117-61-3)¹HNMR 2,2'-Benzidinedisulfonic acid(117-61-3)IR1 2,2'-Benzidinedisulfonic acid(117-61-3)IR2

117-61-3(2,2'-Benzidinedisulfonic acid)Related Search:

Sulfurous Acid IMINOCTADINE TRIS(ALBESILATE) Benzidine ACID RED 89 O-TOLUIDINE DISULFONIC ACID

3,3'-DIMETHYL-NAPHTHIDINE-DISULFONIC ACID Acid Yellow 42 ACID RED 97 (C.I. 22890) 4,4'-DIAMINO-5,5'-DIMETHYL-2,2'-BIPHENYL DISULFONIC ACID DISODIUM SALT Mordant Yellow 26

Acid Yellow 44 Acid Orange 56 2,2'-Benzidinedisulfonic acid

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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 BENZIDINE 2,2 DISULFONIC ACID benzidine-2,2'-disulphonic acid BENZIDINEDISULPHONICACID 2,2''-BENZIDINEDISULFONIC ACID: 70% (CONTAINS MAX. 30% WATER) 4,4''-DIAMINEDIPHENY-2,2''-DISULFONICACID 4,4'-Diamino-2,2'-biphenyldisulfonic acid, tech. 70+% 2,2'-Benzidinedisulfonic Acid (contains 30% Water at maximum) 4,4'-Diamino-2,2'-biphenyldisulfonic acid, 70+% [1,1'-Biphenyl]-2,2'-disulfonic acid, 4,4'-diamino- 2,2'-Biphenyldisulfonic acid, 4,4'-diamino 4,4'-Diamino-1,1'-biphenyl-2,2'-bissulfonic acid 4,4'-Diaminobiphenyl-2,2'-disulfonic acid hydrate, cont. up to 30% water 4,4'-Diamino-2,2'-biphenyldisulfonic acid,85%,tech. (contains 30% Water at MaxiMuM) 2,2'-Benzidinedisulfonic Acid 4,4'-Diaminobiphenyl-2,2'-disulfonic acid hydrate 2,2'-Benzidinedisulf 4,4'-Diaminobiphenyl-2,2'-disulfonic acid hydrate,may contain up to 30% water 4,4'-Diamino-(1,1'-biphenyl)-2,2'-disulfonic acid 4,4'-Diaminobiphenyl-2,2'-disulfonic acid 2,2’-diamino-4’-biphenyldisulfonicacid 2,2’-disulfo-benzidin 4,4’-diamino-2’-biphenyldisulfonicacid 4,4’-diaminodiphenyl-2,2’-disulfonicacid 4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid(contains 30% Water at maximum) 2,2'-Benzidinedisulfonic acid, 70%, water ≤30% 5-amino-2-(4-amino-2-sulfophenyl)benzenesulfonic acid kyselinabenzidin-2,2’-disulfonova 2,2'-disulfo-4,4'diaminobibenzene 2,2'-BENZIDINEDISULFONIC ACID (CONTAINS 30% WATER AT MAXIMUM) 70+% 2,2’-BENZIDINE-DISULPHONIC ACID， HPLC 96+％ 6,6'-bimetanilic acid BENZIDINE 2-2'DISUFONIC ACID 2,2'-Benzidinedisulfonic Acid (contains 30% Water at maximum)> 70.0%(T) Benzidine-2,2'-disuL 5-amino-2-(4-amino-2-sulfophenyl)benzenesulfonicaci 4,4’-Diamino-2,2’-biphenyldisulfonic Acid (contains 30% Water at maximum) Benzidine-2,2'-disulfonic acid/BDSA TIANFUCHEM--High purity 117-61-3 2,2'-Benzidinedisulfonic acid 2,2'-Benzidinedisulfonic Acid (contains 20% Water at maximum) 2,2'-Benzidinedisulfonic acid Benzidine-2,2'-disulfonic acid 4,4'-Diamino-2,2'-biphenyldisulfonic acid 4,4'-diamino[1,1'-biphenyl]-2,2'-disulfonic acid 2,2'-benzidinedisulfonic acid 117-61-3 H2NC6H3SO3H2 C12H12N2O6S2 Intermediates of Dyes and Pigments Biphenyl & Diphenyl ether