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2,5-Diaminobenzenesulfonic acid

2,5-Diaminobenzenesulfonic acid structure

CAS No.: 88-45-9

Chemical Name:: 2,5-Diaminobenzenesulfonic acid

Synonyms: 2,5-Diaminobenzenesulfonic;2-Sulfo-1,4-phenylenediamine;2-Sulfo-p-phenylenediamine;2,5-Diaminobenzolsulfonsure;2,5-diaminobenzenesulfonate;2,5-diamino-benzenesulfonicaci;2,5-DIAMINOBENZENESULFONIC ACID;P-PHENYLENEDIAMINESULFONIC ACID;2,5-diaminobenzenesulphonic acid;2,5-Diaminophenyl-1-sulfonic acid

CBNumber:: CB0117652

Molecular Formula:: C6H8N2O3S

Molecular Weight:: 188.2

MDL Number:: MFCD00007904

MOL File:: 88-45-9.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-12 09:10:49

Product description	Number	Pack Size	Price
2,5-Diaminobenzenesulfonic acid ≥97.0% (T)	32776	50g	$80.9
2,5-Diaminobenzenesulfonic acid ≥97.0% (T)	32776	250g	$193
1,4-Phenylenediamine-2-sulfonic Acid >98.0%(HPLC)(T)	P1691	5g	$28
1,4-Phenylenediamine-2-sulfonic Acid >98.0%(HPLC)(T)	P1691	25g	$89
2,5-Diaminobenzenesulfonic acid	D422570	250mg	$45
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2,5-Diaminobenzenesulfonic acid Properties

Melting point	298-300 °C (dec.) (lit.)
Boiling point	500°C
Density	1.366 (estimate)
vapor pressure	0Pa at 25℃
refractive index	1.6490 (estimate)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
solubility	2.308g/L in organic solvents at 20 ℃
pka	5.17±0.10(Predicted)
form	solid
color	White to Light gray to Light orange
Water Solubility	4g/L at 26℃
BRN	2970398
InChI	1S/C6H8N2O3S/c7-4-1-2-5(8)6(3-4)12(9,10)11/h1-3H,7-8H2,(H,9,10,11)
InChIKey	HEAHMJLHQCESBZ-UHFFFAOYSA-N
SMILES	Nc1ccc(N)c(c1)S(O)(=O)=O
LogP	0.146 at 26℃
CAS DataBase Reference	88-45-9(CAS DataBase Reference)
FDA UNII	UP8112D78N
EPA Substance Registry System	Benzenesulfonic acid, 2,5-diamino- (88-45-9)
UNSPSC Code	12352100
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS05

Signal word

Danger

Hazard statements

H314

Precautionary statements

P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363

PPE

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Hazard Codes

C,Xi

Risk Statements

34-36/37/38

Safety Statements

26-36/37/39-45-36

RIDADR

UN 2583 8/PG 2

WGK Germany

RTECS

DB5900100

TSCA

TSCA listed

HS Code

2921.59.8090

HazardClass

PackingGroup

III

Storage Class

8A - Combustible corrosive hazardous materials

Hazard Classifications

Eye Dam. 1
Skin Corr. 1B

REACH Registrations

Active

NFPA 704

	1
3		0

2,5-Diaminobenzenesulfonic acid price More Price(22)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	32776	2,5-Diaminobenzenesulfonic acid ≥97.0% (T)	88-45-9	50g	$80.9	2026-04-30	Buy
Sigma-Aldrich	32776	2,5-Diaminobenzenesulfonic acid ≥97.0% (T)	88-45-9	250g	$193	2026-04-30	Buy
TCI Chemical	P1691	1,4-Phenylenediamine-2-sulfonic Acid >98.0%(HPLC)(T)	88-45-9	5g	$28	2026-04-30	Buy
TCI Chemical	P1691	1,4-Phenylenediamine-2-sulfonic Acid >98.0%(HPLC)(T)	88-45-9	25g	$89	2026-04-30	Buy
TRC	D422570	2,5-Diaminobenzenesulfonic acid	88-45-9	250mg	$45	2021-12-16	Buy

Product number	Packaging	Price	Buy
32776	50g	$80.9	Buy
32776	250g	$193	Buy
P1691	5g	$28	Buy
P1691	25g	$89	Buy
D422570	250mg	$45	Buy

2,5-Diaminobenzenesulfonic acid Chemical Properties,Uses,Production

Chemical Properties

violet powder

Uses

2,5-Diaminobenzenesulfonic acid was used in preparation of a polymeric dye, required for laccase-mediated dyeing of cotton.

General Description

2,5-Diaminobenzenesulfonic acid is a dye precursor. Electrochemical copolymerization of 2,5-diaminobenzensulfonic acid and aniline by cyclic voltammetry on IrO₂ coated titanium electrodes was reported.

Flammability and Explosibility

Non flammable

Synthesis

Weigh 39g of iron powder added to 1000mL four flask, add water 300mL stirring, add 6g of ammonium chloride and 4mL concentrated hydrochloric acid, warming to 95 , slowly add nitro to add speed to regulate the temperature to maintain above 90 , add too fast easy to rush material danger, add continue to hold for a period of time, when taking a drop of the reaction liquid drop to the disappearance of the yellow ooze circle on the filter paper that is the end point of the reaction, add sodium hydroxide solution to adjust pH = 10, filtration, filtration is 2,5-diaminobenzenesulfonic acid. Add sodium hydroxide solution, adjust pH=10, filter, add hydrochloric acid to the filtrate acid precipitation, filtration that is 2,5-diaminobenzenesulfonic acid.

2,5-Diaminobenzenesulfonic acid synthesis

Synthesis of 2,5-Diaminobenzenesulfonic acid from 4-AMINOAZOBENZENE HYDROCHLORIDE

2,5-Diaminobenzenesulfonic acid Preparation Products And Raw materials

Raw materials

Preparation Products

Reactive Blue 74 disodium 5-((4-acetylamino-2-sulphophenyl)azo)-6-amino-4-hydroxynaphthalene-2-disulphonate Reactive Blue 49 REACTIVE BLUE 2 hexasodium 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphonatophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphonatophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate

Benzenesulfonic acid, 2-[[2-(methylamino)-1-naphthalenyl]azo]-5-nitro-, monosodium salt Acid Yellow 158:1 Reactive Blue 94 4-Amino-3-[[4'-[(2,7-diamino-1-naphtyl)azo]-1,1'-biphenyl-4-yl]azo]-5-hydroxy-6-[(4-nitro-2-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid trisodium salt Levafix Brilliant Blue E-B

Reactive Orange 29 REACTIVE ORANGE 14 Direct Red 75 tetrasodium salt Acid Red 34 1-amino-4-(4-amino-2-sulphoanilino)-9,10-dihydro-9,10-dioxoanthracene-2-sulphonic acid

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2,5-Diaminobenzenesulfonic acid Suppliers

Global( 299)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Coresyn Pharmatech Co., Ltd.	+86-571-86626709 +86-18157142896	cbc@coresyn.com	China	9984	58
Hebei Zhuanglai Chemical Trading Co.,Ltd	+8613343047651	admin@zlchemi.com	China	3692	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	21588	55
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29817	58
Shandong chuangyingchemical Co., Ltd.	18853181302	sale@chuangyingchem.com	CHINA	5906	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49977	58
Antai Fine Chemical Technology Co.,Limited	18503026267	info@antaichem.com	CHINA	9636	58
SIMAGCHEM CORP	+86-5922680277 +86-13806087780	sale@simagchem.com	China	17346	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +8618949823763	sales@tnjchem.com	China	34563	58

Supplier	Advantage
Coresyn Pharmatech Co., Ltd.	58
Hebei Zhuanglai Chemical Trading 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
Antai Fine Chemical Technology Co.,Limited	58
SIMAGCHEM CORP	58
Hefei TNJ Chemical Industry Co.,Ltd.	58

View Lastest Price from 2,5-Diaminobenzenesulfonic acid manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2025-11-18	2,5-Diaminobenzenesulfonic acid 88-45-9	US $1.10 / g	1g	99.00%	100 Tons Min	Dideu Industries Group Limited
2025-04-15	2,5-Diaminobenzenesulfonic acid 88-45-9	US $45.00 / kg	1kg	99%	5000kg/week	Hebei Zhuanglai Chemical Trading Co.,Ltd
2023-03-13	2,5-Diaminobenzenesulfonic acid 88-45-9	US $0.00-0.00 / kg	1kg	98%Min	1000kg	LY Global chemicals co.,ltd .

2,5-Diaminobenzenesulfonic acid
88-45-9
US $1.10 / g
99.00%
Dideu Industries Group Limited

2,5-Diaminobenzenesulfonic acid
88-45-9
US $45.00 / kg
99%
Hebei Zhuanglai Chemical Trading Co.,Ltd

2,5-Diaminobenzenesulfonic acid
88-45-9
US $0.00-0.00 / kg
98%Min
LY Global chemicals co.,ltd .

2,5-Diaminobenzenesulfonic acid Spectrum

2,5-Diaminobenzenesulfonic acid(88-45-9)MS 2,5-Diaminobenzenesulfonic acid(88-45-9)¹HNMR 2,5-Diaminobenzenesulfonic acid(88-45-9)IR1 2,5-Diaminobenzenesulfonic acid(88-45-9)IR2

88-45-9(2,5-Diaminobenzenesulfonic acid)Related Search:

p-Phenylenediamine N,N-Dimethyl-1,4-phenylenediamine 3,4-Diaminobenzenesulfonic acid Aniline-2-sulfonic acid Folic acid

Sodium 2-aminosulphanilate Sulfanilic acid Phthalimide 4-Amino-benzenesulfonic acid monosodium salt Ethyl 2-(Chlorosulfonyl)acetate

N,N'-(1,4-Phenylene)bis(acetoacetamide) p-Phenylenediamine dihydrochloride Metanilic acid Glycine 1,3-DIAMINOBENZENESULFONIC ACID

ACID BLUE 25 REACTIVE BLACK 5 ACID YELLOW 65

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1,4-PHENYLENEDIAMINE-2-SULPHONIC ACID 1,4-PHENYLENEDIAMINE-3-SULFONIC ACID 1,4 DIAMINOBENZENE 2 SULFONIC ACID 2,5-DIAMINOBENZENESULFONIC ACID 2,5-DiaMinobenzenesulfonic acid, 97%, contains <10% Monohydrochloride salt 1,4-Diamino-2-benzenesulfonic acid 2,5-Diaminophenyl-1-sulfonic acid 2,5-Diaminobenzene-1-sulfonic acid 2,5-Diaminobenzenesulfonic acid,90%,tech. P-PHENYLENEDIAMINESULFONIC ACID PARA PHENYLENE DIAMINE SULFONIC ACID 2,5-diamino-benzenesulfonicaci Benzenesulfonic acid,2,5-diaMino- 2,5-DiaMinobenzenesulfonic acid >=97.0% (T) 2-Sulfo-p-phenylenediamine 2,5-DIAMINOBENZENESULFONIC ACID, TECH., 90% p-Phenylenediamine-2-sulfonic acid 2,5-diaminobenzenesulphonic acid P-phenylene-diamine-ortho-sulphonic acid p-Phenylenediamine-3-sulfonic acid 2,5-Diaminobenzolsulfonsure p-Phenylenediamine-5-sulfonic acid Para Phenylene Di Amine Ortho Sulfonic Acid (PPDSA) 2,5-diaminobenzenesulfonate 1,4-Phenylenediamine-2-sulfonicAcid> 2,5-Diaminobenzenesulfonic acid ISO 9001：2015 REACH p-Phenylenediamine-2-sulphonic acid TIANFUCHEM--88-45-9---2,5-Diaminobenzenesulfonic acid 2-Sulfo-1,4-phenylenediamine 2,5-Diaminobenzenesulfonic PPDOSA P-Phenylene-Diamine-2-Sulfonic Acid PPDSA (2,5-Diaminobenzenesulfonic acid) 2 5-DIAMNIOBENZENESULFONIC ACID (PPDOSA) PARA PHENYLENE DIAMINE ORTHO SULFONIC ACID Ortho sulfonic acid para phenylenediamine 88-45-9 SO3HC6H3NH22 H2N2C6H3SO3H C6H7N2O3S Sulfonic/Sulfinic Acids Sulfur Compounds Organic Building Blocks Building Blocks Organic Building Blocks Sulfonic/Sulfinic Acids Sulfur Compounds Intermediates of Dyes and Pigments Building Blocks Chemical Synthesis Organic Building Blocks Sulfonic/Sulfinic Acids Sulfur Compounds