Basic information Safety Supplier Related

Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-3-nitro-, monosodium salt

Basic information Safety Supplier Related

Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-3-nitro-, monosodium salt Basic information

Product Name:
Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-3-nitro-, monosodium salt
Synonyms:
  • Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-3-nitro-, monosodium salt
  • Acid Orange 23
  • C.I.Acid Orange 23:C.I.15540
CAS:
5850-82-8
MF:
C16H10N3NaO6S
MW:
395.32187
EINECS:
611-679-3
Mol File:
5850-82-8.mol
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Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-3-nitro-, monosodium salt Usage And Synthesis

Preparation

4-Amino-2-nitrobenzenesulfonic acid diazotization, with Naphthalen-2-ol coupling

Properties and Applications

red light orange. Soluble in water and ethanol for yellow light brown. The strong sulfuric acid for orange brown, with golden yellow diluted. In water solution to join strong hydrochloric acid for yellow brown; Add thick sodium hydroxide solution for red light orange brown. Can be used for wool, silk fiber dyeing etc, and can also be used to dye the leather and manufacturing organic pigments.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 4 2-3 2 2-3 1 3

Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-3-nitro-, monosodium saltSupplier