4-Hydroxynaphthalene-1-sulfonic acid

  • 1-Naphthalenesulfonic acid, 4-hydroxy
  • a-Naphthol-4-sulfonic acid
  • 1,4-Oxy Acid
  • Nevile and Winther's acid
  • 1-Hydroxy-4-naphthalenesulfonic acid
  • 1-Naphthol-4-sulfonic acid
Formula
C10H8O4S
Structure
Uses
Preparation of azo dyes.

Registry Numbers and Inventories.
CAS
84-87-7
EC (EINECS/ELINCS)
201-568-4
Merck
12,6478
Beilstein/Gmelin
2214801
Beilstein Reference
4-11-00-00614
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C10H8O4S
Formula mass
224.24
Melting point, °C
170
Boiling point, °C
427
Density
1.55 g/cm3
Solubility in water
Very soluble
pKa/pKb
0.73 (pKa)
Partition coefficient, pKow
-0.44

Hazards and Protection.

Fire.

Health.
Exposure effects

First aid
 

Transport.