2-Naphthalenesulfonic acid, 6-[(2-hydroxy-5-methylphenyl)azo]-, monosodium salt
2-Naphthalenesulfonic acid, 6-[(2-hydroxy-5-methylphenyl)azo]-, monosodium salt Basic information
- Product Name:
- 2-Naphthalenesulfonic acid, 6-[(2-hydroxy-5-methylphenyl)azo]-, monosodium salt
- Synonyms:
-
- 2-Naphthalenesulfonic acid, 6-[(2-hydroxy-5-methylphenyl)azo]-, monosodium salt
- Acid Yellow 21
- C.I.Acid Yellow 21:C.I.14230
- CAS:
- 6408-97-5
- MF:
- C17H13N2NaO4S
- MW:
- 364.35089
- EINECS:
- 613-457-1
- Mol File:
- 6408-97-5.mol
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2-Naphthalenesulfonic acid, 6-[(2-hydroxy-5-methylphenyl)azo]-, monosodium salt Usage And Synthesis
Preparation
6-Aminonaphthalene-2-sulfonic acid diazo, and p-Cresol coupling.
Properties and Applications
red light yellow. For yellow is soluble in water, soluble in ethanol and acetone, slightly soluble in benzene. The strong sulfuric acid to red. Used for wool, silk, vinegar fiber dyeing and printing directly. The metal salt can be used as organic pigments.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 5-6 | 2-3 | 3 | 2-3 | ||||