2-Aminophenol-4-sulfonic acid

Synonym(s):2-Aminophenol-4-sulfonic acid

CAS NO.：98-37-3
Empirical Formula: C6H7NO4S
Molecular Weight: 189.19
MDL number: MFCD00007696
EINECS: 202-662-8
SAFETY DATA SHEET (SDS)
Update Date: 2024-04-03 12:01:51

2-Aminophenol-4-sulfonic acid Structural

What is 2-Aminophenol-4-sulfonic acid?

Chemical properties

brown crystals

The Uses of 2-Aminophenol-4-sulfonic acid

3-Amino-4-hydroxybenzenesulfonic acid can be used to synthesize various heterocyclic Schiff bases for imaging applications. 3-Amino-4-hydroxybenzenesulfonic acid can also be used for comparative assessment in the Tetrahymena pyriformis growth inhibition assay.

Production Methods

2-Aminophenol-4-sulfonic acid is obtained by boiling 4-chloro-3- nitrobenzenesulfonic acid with sodium hydroxide solution, followed by Béchamp reduction.

General Description

Rhombic brown crystals.

Air & Water Reactions

2-Aminophenol-4-sulfonic acid may be sensitive to prolonged exposure to air. Insoluble in water.

Reactivity Profile

2-Aminophenol-4-sulfonic acid may react with strong oxidizers and mineral acids or bases.

Fire Hazard

Flash point data for 2-Aminophenol-4-sulfonic acid is not available, however 2-Aminophenol-4-sulfonic acid is probably combustible.

Properties of 2-Aminophenol-4-sulfonic acid

Melting point:	≥300 °C(lit.)
Boiling point:	398.09℃[at 101 325 Pa]
Density	1.5149 (rough estimate)
vapor pressure	0Pa at 25℃
refractive index	1.5500 (estimate)
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
form	powder to crystal
pka	-0.81±0.50(Predicted)
color	Orange to Amber to Dark red
Water Solubility	<0.1 g/100 mL at 21.5 ºC
BRN	514765
Stability:	Stable. Incompatible with strong oxidizing agents, strong acids and strong bases.
CAS DataBase Reference	98-37-3(CAS DataBase Reference)
EPA Substance Registry System	4-Hydroxymetanilic acid (98-37-3)

Safety information for 2-Aminophenol-4-sulfonic acid

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.