| Identification | Back Directory | [Name]
2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-(2-naphthalenylazo)-, disodium salt | [CAS]
5858-66-2 | [Synonyms]
Acid Red 16
C.I.Acid Red 16:C.I.14920
2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-(2-naphthalenylazo)-, disodium salt | [EINECS(EC#)]
611-707-4 | [Molecular Formula]
C20H12N2Na2O7S2 | [MOL File]
5858-66-2.mol | [Molecular Weight]
502.428 |
| Hazard Information | Back Directory | [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.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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Fading
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Stain
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Fading
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Stain
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ISO
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4
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2-3
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3
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2
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1-2
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2
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