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2,5-Diaminobenzenesulfonic acid

Product Name
2,5-Diaminobenzenesulfonic acid
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
Formula Weight
188.2
MOL File
88-45-9.mol
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2,5-Diaminobenzenesulfonic acid Property

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)
EPA Substance Registry System
Benzenesulfonic acid, 2,5-diamino- (88-45-9)
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Safety

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 
2
RTECS 
DB5900100
TSCA 
TSCA listed
HS Code 
2921.59.8090
HazardClass 
8
PackingGroup 
III
Storage Class
8A - Combustible corrosive hazardous materials
Hazard Classifications
Eye Dam. 1
Skin Corr. 1B
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P363Wash contaminated clothing before reuse.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
32776
Product name
2,5-Diaminobenzenesulfonic acid
Purity
≥97.0% (T)
Packaging
50g
Price
$76
Updated
2025/07/31
Sigma-Aldrich
Product number
32776
Product name
2,5-Diaminobenzenesulfonic acid
Purity
≥97.0% (T)
Packaging
250g
Price
$171.95
Updated
2025/07/31
TCI Chemical
Product number
P1691
Product name
1,4-Phenylenediamine-2-sulfonic Acid
Purity
>98.0%(HPLC)(T)
Packaging
5g
Price
$44
Updated
2025/07/31
TCI Chemical
Product number
P1691
Product name
1,4-Phenylenediamine-2-sulfonic Acid
Purity
>98.0%(HPLC)(T)
Packaging
25g
Price
$131
Updated
2025/07/31
TRC
Product number
D422570
Product name
2,5-Diaminobenzenesulfonic acid
Packaging
250mg
Price
$45
Updated
2021/12/16
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2,5-Diaminobenzenesulfonic acid Chemical Properties,Usage,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 Preparation Products And Raw materials

Raw materials

Preparation Products

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2,5-Diaminobenzenesulfonic acid Suppliers

NORANA GROUP
Tel
027-59209883 17386169806
Email
service@nornachem.com
Country
China
ProdList
4934
Advantage
58
Nantong Xiaochang Pharmaceutical Trading Co., Ltd.
Tel
0513-82104991 18912868322
Fax
QQ1907456386
Email
sales11@btcpharm.com
Country
China
ProdList
1301
Advantage
58
J & K SCIENTIFIC LTD.
Tel
18210857532; 18210857532
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Binhai Gaolou Chemical Co., Ltd
Tel
0086-13805118479 +86-515-84388001
Fax
+86-515-84388006
Email
sales@gaolouchem.com
Country
China
ProdList
15
Advantage
49
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
Advantage
81
Beijing HwrkChemical Technology Co., Ltd
Tel
010-89508211 18501085097
Fax
010-89508210
Email
sales.bj@hwrkchemical.com
Country
China
ProdList
9401
Advantage
55
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44801
Advantage
61
Capot Chemical Co., Ltd
Tel
+86 (0) 571 85 58 67 18
Fax
0086-571-85864795
Country
China
ProdList
18207
Advantage
66
Beijing Ouhe Technology Co., Ltd
Tel
010-010-82967028 13522913783
Fax
+86-10-82967029
Email
2355560935@qq.com
Country
China
ProdList
11999
Advantage
60
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View Lastest Price from 2,5-Diaminobenzenesulfonic acid manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
2,5-Diaminobenzenesulfonic acid 88-45-9
Price
US $45.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000kg/week
Release date
2024-05-31
LY Global chemicals co.,ltd .
Product
2,5-Diaminobenzenesulfonic acid 88-45-9
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
98%Min
Supply Ability
1000kg
Release date
2023-03-12
Zhuozhou Wenxi import and Export Co., Ltd
Product
2,5-Diaminobenzenesulfonic acid 88-45-9
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-08-10

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