2,5-Diaminobenzenesulfonic acid Chemical 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)

EPA Substance Registry System

Benzenesulfonic acid, 2,5-diamino- (88-45-9)

Safety Information

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

MSDS

• Language:English Provider:2,5-Diaminobenzenesulfonic acid
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich

2,5-Diaminobenzenesulfonic acid Usage And Synthesis

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(88-45-9)Related Product Information

• Aniline-2-sulfonic acid
• Folic acid
• Glycine
• Sodium 2-aminosulphanilate
• Sulfanilic acid
• 4-Amino-benzenesulfonic acid monosodium salt
• Ethyl 2-(Chlorosulfonyl)acetate
• N,N'-(1,4-Phenylene)bis(acetoacetamide)
• p-Phenylenediamine dihydrochloride
• 3,4-Diaminobenzenesulfonic acid
• N,N-Dimethyl-1,4-phenylenediamine
• p-Phenylenediamine
• Phthalimide
• Metanilic acid
• 1,3-DIAMINOBENZENESULFONIC ACID
• ACID BLUE 25
• REACTIVE BLACK 5
• ACID YELLOW 65