2,4-Diaminobenzenesulfonic acid Chemical Properties

Melting point:

260-266 °C (dec.)

Boiling point:

500°C (estimate)

Density 

1.366 (estimate)

vapor pressure 

0Pa at 25℃

refractive index 

1.6490 (estimate)

storage temp. 

-20°C Freezer, Under inert atmosphere

solubility 

DMSO (Slightly, Heated), Methanol (Slightly)

form 

Solid

pka

2.99±0.10(Predicted)

color 

White to Pale Yellow

Water Solubility 

1000g/L at 25℃

BRN 

2694057

LogP

-4.65

CAS DataBase Reference

88-63-1(CAS DataBase Reference)

EPA Substance Registry System

Benzenesulfonic acid, 2,4-diamino- (88-63-1)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/38-43-36/37/38

Safety Statements 

26-36/39-37/39-36

RIDADR 

1759

WGK Germany 

2

RTECS 

DB5900000

HazardClass 

8

PackingGroup 

III

HS Code 

29309090

MSDS

• Language:English Provider:2,4-Diaminobenzenesulfonic acid
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2,4-Diaminobenzenesulfonic acid Usage And Synthesis

Uses

2,4-Diaminobenzenesulfonic acid (cas# 88-63-1) is a useful reagent for improving the chlorine resistance and water permeability of polyamide (PA) membrane in water treatment.

Chemical Properties

brown crystalline powder

Uses

2,4-Diaminobenzenesulfonic acid was used in preparation of series of sulfonated homo- and random co-polyimides.

Production Methods

2,4-Diaminobenzenesulfonic acid is obtained by sulfonating a solution of m-phenylenediamine in 100% sulfuric acid with oleum at 155 ℃, adding water to the sulfonation mixture, desulfonating the resulting disulfonic acids at 140 ℃, and isolating the free acid at 10 ℃; yield 93%. Another process starts from 1-chloro-2,4-dinitrobenzene, which, as an alcoholic solution, is reacted with sodium sulfite solution to form 2,4-dinitrobenzenesulfonic acid, from which the end product is obtained by reduction with iron according to B_E′CHAMP.

General Description

2,4-Diaminobenzenesulfonic acid is an sulfonated aromatic amine and its aerobic biodegradation was reported.

2,4-Diaminobenzenesulfonic acid(88-63-1)Related Product Information

• Aniline-2-sulfonic acid
• o-Phenylenediamine
• m-Phenylenediamine
• Metanilic acid
• Sulfanilic acid
• 4-Amino-benzenesulfonic acid monosodium salt
• 2,4-DINITROBENZENESULFONIC ACID SODIUM SALT
• 2,4,6-TRINITROBENZENESULFONIC ACID
• Mordant Brown 33
• 4-Acetamido-2-aminobenzenesulfonic acid
• 2,4-DINITROBENZENESULFONIC ACID
• 2,5-DIAMINOBENZENESULFONIC ACID,2,5-DIAMINOBENZENESULFONIC ACID, TECH., 90%
• Sodium 2-aminosulphanilate
• REACTIVE BLUE 5
• REACTIVE BLUE 4
• REACTIVE RED 4
• 3,4-Diaminobenzenesulfonic acid
• CIBACRON BRILLIANT YELLOW 3G-P