ChemicalBook >> CAS DataBase List >>3,3'-Dihydroxybenzidine

3,3'-Dihydroxybenzidine

3,3'-Dihydroxybenzidine structure

CAS No.: 2373-98-0

Chemical Name:: 3,3'-Dihydroxybenzidine

Synonyms: HAB;4,4'-Diamino-[1,1'-biphenyl]-3,3'-diol;1’-biphenyl)-3,3’-diol,4,4’-diamino-(;2-amino-5-(4-amino-3-hydroxyphenyl)phenol;p-HAB;Dihydroxybenzidine;3,3’-dioxybenzidine;BENZIDINE-3,3'-DIOL;-Dihydroxybenzidine;3,3'-Dihydroxybenzid

CBNumber:: CB6437723

Molecular Formula:: C12H12N2O2

Molecular Weight:: 216.24

MDL Number:: MFCD00039149

MOL File:: 2373-98-0.mol

MSDS File:: SDS

Last updated:2026-05-28 05:29:48

Product description	Number	Pack Size	Price
3,3'-Dihydroxybenzidine >99.0%(T)	D2312	5g	$118
3,3'-Dihydroxybenzidine >99.0%(T)	D2312	25g	$389
3,3'-Dihydroxybenzidine	FD62618	5g	$163.3
3,3'-Dihydroxybenzidine	FD62618	10g	$272.2
3,3'-Dihydroxybenzidine	FD62618	25g	$544.5
More product size

Request For Quotation

3,3'-Dihydroxybenzidine Properties

Melting point	292 °C
Boiling point	356.65°C (rough estimate)
Density	1.1710 (rough estimate)
refractive index	1.6660 (estimate)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
Water Solubility	Practically insoluble in water
pka	9.15±0.10(Predicted)
form	powder to crystal
color	White to Gray to Brown
InChI	InChI=1S/C12H12N2O2/c13-9-3-1-7(5-11(9)15)8-2-4-10(14)12(16)6-8/h1-6,15-16H,13-14H2
InChIKey	ZGDMDBHLKNQPSD-UHFFFAOYSA-N
SMILES	C1(C2=CC=C(N)C(O)=C2)=CC=C(N)C(O)=C1
CAS DataBase Reference	2373-98-0(CAS DataBase Reference)
FDA UNII	OJ61P3RD7H
EPA Substance Registry System	3,3-Dihydroxybenzidine (2373-98-0)

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07,GHS08

Signal word

Warning

Hazard statements

H315-H319-H351-H373

Precautionary statements

P201-P202-P260-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P308+P313-P405-P501

Hazard Codes

Risk Statements

40-45-48-36/37/38

Safety Statements

22-53-45-36/37/39-26-6

RTECS

DV4900000

HS Code

29222990

Hazardous Substances Data

2373-98-0(Hazardous Substances Data)

NFPA 704

	0
2		0

3,3'-Dihydroxybenzidine price More Price(60)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
TCI Chemical	D2312	3,3'-Dihydroxybenzidine >99.0%(T)	2373-98-0	5g	$118	2026-04-30	Buy
TCI Chemical	D2312	3,3'-Dihydroxybenzidine >99.0%(T)	2373-98-0	25g	$389	2026-04-30	Buy
Biosynth	FD62618	3,3'-Dihydroxybenzidine	2373-98-0	5g	$163.3	2026-06-04	Buy
Biosynth	FD62618	3,3'-Dihydroxybenzidine	2373-98-0	10g	$272.2	2026-06-04	Buy
Biosynth	FD62618	3,3'-Dihydroxybenzidine	2373-98-0	25g	$544.5	2026-06-04	Buy

Product number	Packaging	Price	Buy
D2312	5g	$118	Buy
D2312	25g	$389	Buy
FD62618	5g	$163.3	Buy
FD62618	10g	$272.2	Buy
FD62618	25g	$544.5	Buy

3,3'-Dihydroxybenzidine Chemical Properties,Uses,Production

Description

3,3'-Dihydroxybenzidine is an organic synthesis intermediate used as a raw material for the synthesis of fire-resistant polymers (polyhydroxyamino acids).3,3'-Dihydroxybenzidine is also used in the preparation of hydroxyl-containing polyimides, all of which are synthesised to be soluble in NMP when heated. 3,3'-Dihydroxybenzidine is used in the synthesis of polyimides with hydroxyl groups. The glass transition temperature (Tg) of polyimides ranges from 336-360°C, independent of the structure of the tetracarboxylic dianhydride. The storage modulus of some polyimides does not decrease at elevated temperatures. All polyimides thermally transform into polybenzoxazole when heated to 500°C for 1 hour under vacuum.

Chemical Properties

A pale brown solid

Uses

4,4'-diaminobiphenyl-3,3'-diol is used as organic intermediates.

Uses

3,3''-Dihydroxybenzidine is used in preparation method of covalent organic framework-based metamaterial for optical device.

General Description

Colorless crystals.

Air & Water Reactions

Keep well closed. Protect from air and light.

Reactivity Profile

3,3'-Dihydroxybenzidine is an aminoalcohol. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides.

Health Hazard

ACUTE/CHRONIC HAZARDS: When heated to decomposition 3,3'-Dihydroxybenzidine emits toxic fumes.

Safety Profile

Suspected carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of Nox

3,3'-Dihydroxybenzidine synthesis

Synthesis of 3,3'-Dihydroxybenzidine from 2(3H)-Benzoxazolone,4-amino-(9CI)

3,3'-Dihydroxybenzidine Preparation Products And Raw materials

Raw materials

Sodium acetate trihydrate Sodium bisulfite o-Dianisidine Hydriodic acid

Preparation Products

C.I. Direct Blue 166

3,3'-Dihydroxybenzidine Suppliers

Global( 295)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Shanghai Daeyeon Chemicals Co., Ltd	021-64478606 +8615900664856	daeyeon001@vip.163.com	China	2062	58
CHINATECH(TIANJIN) CHEMICAL CO.,LTD.	+86-18222205756 +86-18222205756	sales6@chinatechem.com	China	96	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20120	58
Hebei Zhuanglai Chemical Trading Co.,Ltd	+8613343047651	admin@zlchemi.com	China	3692	58
Springchem New Material Technology Co.,Limited	+86-021-62885108 +8613917661608	info@spring-chem.com	China	2068	57
Capot Chemical Co.,Ltd.	+86-（0）57185586718 +86-13336195806	sales@capot.com	China	29640	60
Shanghai Daken Advanced Materials Co.,Ltd	+86-2158073036	info@dakenam.com	China	14026	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21585	55
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29812	58
Shenzhen Nexconn Pharmatechs Ltd	+86-755-89396905 +86-15013857715	admin@nexconn.com	China	10403	58

Supplier	Advantage
Shanghai Daeyeon Chemicals Co., Ltd	58
CHINATECH(TIANJIN) CHEMICAL CO.,LTD.	58
Henan Fengda Chemical Co., Ltd	58
Hebei Zhuanglai Chemical Trading Co.,Ltd	58
Springchem New Material Technology Co.,Limited	57
Capot Chemical Co.,Ltd.	60
Shanghai Daken Advanced Materials Co.,Ltd	58
Henan Tianfu Chemical Co.,Ltd.	55
career henan chemical co	58
Shenzhen Nexconn Pharmatechs Ltd	58

View Lastest Price from 3,3'-Dihydroxybenzidine manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-07-11	3,3'-Dihydroxybenzidine (HAB) 2373-98-0		1Kg	≥99%	100KG	CHINATECH(TIANJIN) CHEMICAL CO.,LTD.
2026-07-09	4,4'-Diamino-3,3'-biphenyldiol 2373-98-0	$1.00-111.00	1KG	99%		Henan Fengda Chemical Co., Ltd
2025-11-18	3,3'-Dihydroxybenzidine 2373-98-0	$1.10	1g	99.00%	100 Tons	Dideu Industries Group Limited

3,3'-Dihydroxybenzidine (HAB)
2373-98-0
≥99%
CHINATECH(TIANJIN) CHEMICAL CO.,LTD.

4,4'-Diamino-3,3'-biphenyldiol
2373-98-0
$1.00-111.00
99%
Henan Fengda Chemical Co., Ltd

3,3'-Dihydroxybenzidine
2373-98-0
$1.10
99.00%
Dideu Industries Group Limited

3,3'-Dihydroxybenzidine Spectrum

3,3'-Dihydroxybenzidine(2373-98-0)MS 3,3'-Dihydroxybenzidine(2373-98-0)¹HNMR 3,3'-Dihydroxybenzidine(2373-98-0)¹³CNMR 3,3'-Dihydroxybenzidine(2373-98-0)IR1 3,3'-Dihydroxybenzidine(2373-98-0)IR2

2373-98-0(3,3'-Dihydroxybenzidine)Related Search:

3,3',5,5'-Tetramethylbenzidine dihydrochloride Chrysin Protocatechuic acid Benzidine dihydrochloride Triclosan

2,2'-Benzidinedisulfonic acid 1,3-Dihydroxyacetone Benzidine 1-Hydroxyethylidene-1,1-diphosphonic acid Pigment Yellow 13

Butylated hydroxytoluene (BHT) 3,3'-DIHYDROXYDIPHENYLAMINE 3,3'-Dimethoxybenzidine dihydrochloride Tetrazolium Blue Chloride Tetranitroblue tetrazolium chloride

Nitrotetrazolium blue chloride CHICAGO SKY BLUE 6B o-Dianisidine

1of4

1’-biphenyl)-4,4’-diamine,3,3’-dihydroxy-( 3,3'-DIHYDROXY-4,4'-DIAMINO-BIPHENYL Dihydroxybenzidine 2-amino-5-(4-amino-3-hydroxyphenyl)phenol 3,3-DIHYDROXYBENZIDINE 98+% 4,4'-Diaminobiphenyl-3,3'-diol 3,3'-Dihydroxybiphenyl-4,4'-diamine 4,4'-Diamino-(1,1'-biphenyl)-3,3'-diol 5,5'-Bi(2-aminophenol) 2-azanyl-5-(4-azanyl-3-hydroxy-phenyl)phenol 3,3'-Dihydroxybenzid 4,4'-DiaMino-3,3'-diphenol Benzidine-3,3'-diol 4,4'-Diamino-3,3'-dihydroxybiphenyl [1,1'-Biphenyl]-3,3'-diol,4,4'-diaMino- 3,3'-Dihydroxybenzidine(p-HAB) 4,4'-Diaobiphenyl-3,3'-Diol 3,3’-dihydroxy-benzidin 3,3’-dioxybenzidine 3,3'-Dihydroxybenzidine in stock Factory 3,3’-dwuoksybenzydyna 3,3’-dwuoksybenzydyna(polish) 4,4’-diamino-3’-biphenyldiol 6,6’-diamino-m’-biphenol BENZIDINE-3,3'-DIOL 4,4'-DIAMINO-3,3'-BIPHENYLDIOL 4,4'-DIAMINO-3,3'-DIHYDROXYBIPHENYL 3,3'-Dihydroxybenzidine> 3,3'-Dihydroxybenzidine ISO 9001：2015 REACH p-HAB 3,3'-Dihydroxybenzidine (HAB) TIANFU-CHEM 3,3'-Dihydroxybenzidine 3,3'-Biphenyldiol, 4,4'-Diamino 3,3'-Dihydroxybenzidine 4,4'-Diamino-[1,1'-biphenyl 3,3'-Dihydroxy-4,4'-diaminobiphenyl 3,3'-Dihydroxybenzidine (p-HAB) 3,3'-Dihydroxybiphenylamine (HAB) 3.3'-DIHYDROXY-4.4'-DIAMINO-BIPHENYL 98% -Dihydroxybenzidine 1’-biphenyl)-3,3’-diol,4,4’-diamino-( 4,4'-Diamino-[1,1'-biphenyl]-3,3'-diol HAB 2373-98-0 2372-98-0 Reagent for High-Performance Polymer Research Biphenyls (for High-Performance Polymer Research) Thiophen Biphenyl & Diphenyl ether Biphenyls (for High-Performance Polymer Research) Functional Materials Reagent for High-Performance Polymer Research 2373-98-0 intermediate