Other grades of this product :
| Eriochrome Black A Basic information |
| Product Name: | Eriochrome Black A | | Synonyms: | 1-Naphthalenesulfonic acid, 3-hydroxy-4-(2-hydroxy-1-naphthalenyl)azo-7-nitro-, monosodium salt;2',3-Dihydroxy-7-nitro-(1',4-azobisnaphthalene)-1-sulfonic acid sodium salt;3-Hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonic acid sodium salt;Eriochrome black A (Mordant-black 1);SodiuM 3-hydroxy-4-[(2-hydroxy-1-naphthyl)diazenyl]-7-nitronaphthalene-1-sulfonate;CHROME BLACK A;CI 15710;CI NO 15710 | | CAS: | 3618-58-4 | | MF: | C20H12N3NaO7S | | MW: | 461.38 | | EINECS: | 222-807-9 | | Product Categories: | | Mol File: | 3618-58-4.mol |
| Eriochrome Black A Chemical Properties |
| Eriochrome Black A Usage And Synthesis |
| Preparation | 4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazotization, and Naphthalen-2-ol coupling. | | Properties and Applications | blue light gray to black. Black powder. Soluble in water for navy blue, in the water solubility 60 g/l (80 ℃), slightly soluble in ethanol and Acetone. In concentrated sulfuric acid for blue, yellow after diluted into light brown; In concentrated nitric acid for red orange. Its aqueous solution for navy blue, join concentrated hydrochloric acid to pale yellow light brown; Join strong caustic into orange brown. Dyeing wool in nitric acid into black light purple, and have a slight white streaks. Mainly used for wool fabric dyeing, also can be used for silk and nylon dyeing, also can be used for wool and a variety of fiber blended fabric dyeing, can be in acetic acid chromium pretreatment of wool fabric direct printing. Also used in the leather dyeing.
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Standard
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Ironing Fastness
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Light Fastness
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Fulling
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Persperation Fastness
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Soaping
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Water
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Alkali
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Acid
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ISO
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4-5
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5
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4-5
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5
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5
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5
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AATCC
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4-5
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4-5
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5
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5
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5
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| Eriochrome Black A Preparation Products And Raw materials |
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