2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-(2-naphthalenylazo)-, disodium salt
2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-(2-naphthalenylazo)-, disodium salt Basic information
- Product Name:
- 2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-(2-naphthalenylazo)-, disodium salt
- Synonyms:
-
- 2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-(2-naphthalenylazo)-, disodium salt
- C.I.Acid Red 16:C.I.14920
- Acid Red 16
- CAS:
- 5858-66-2
- MF:
- C20H12N2Na2O7S2
- MW:
- 502.42802
- EINECS:
- 611-707-4
- Mol File:
- 5858-66-2.mol
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2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-(2-naphthalenylazo)-, disodium salt Usage And Synthesis
Preparation
Naphthalen-2-amine diazo, coupled with 4-Hydroxynaphthalene-2,7-disulfonic acid.
Properties and Applications
red. Soluble in water for red, orange for adequate soluble in alcohol. The strong sulfuric acid for dark purple, diluted in red. In aqueous solution to join strong hydrochloric acid for red; Add thick sodium hydroxide solution for orange brown.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 4 | 2-3 | 3 | 2 | 1-2 | 2 | ||
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2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-(2-naphthalenylazo)-, disodium salt(5858-66-2)Related Product Information
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- C.I. Acid Red 158
- CIACIDRED151
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- 2-Naphthalenesulfonic acid, 6-(acetylamino)-3-([1,1'-biphenyl]-2-ylazo)-4-hydroxy-, monosodium salt
- ACID RED 151
- SUPRANOL BRILLIANT RED 3B
- 2,7-Naphthalenedisulfonic acid, 4,4'-[(2,2'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(2,1-diazenediyl)]bis[3-hydroxy-, sodium salt (1:4)