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| Classification | Dyes and Pigments |
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| Product Name: | tetrasodium 2-[[4-[[4-[[1-hydroxy-6-(phenylamino)-3-sulphonato-2-naphthyl]azo]-7-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]benzene-1,4-disulphonate |
| Synonyms: | tetrasodium 2-[[4-[[4-[[1-hydroxy-6-(phenylamino)-3-sulphonato-2-naphthyl]azo]-7-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]benzene-1,4-disulphonate;Direct Blue 70;Fast Blue RGL;2-[[4-[[4-[(1-Hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-7-sodiosulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]benzene-1,4-disulfonic acid disodium salt;C.I.34205;Solius Blue FG;Direct blue 70 (C.I. 34205);1,4-Benzenedisulfonic acid, 2-[[4-[[4-[[1-hydroxy-6-( phenylamino)-3-sulfo-2-naphthalenyl]azo]-7-sulfo-1 -naphthalenyl]azo]-1-naphthalenyl]azo]-, tetrasodium salt |
| CAS: | 6428-58-6 |
| MF: | C42H25N7Na4O13S4 |
| MW: | 1055.90608 |
| EINECS: | 229-210-2 |
| Product Categories: | Organics |
| Mol File: | 6428-58-6.mol |
| Preparation | 2-Aminobenzene-1,4-disulfonic acid diazo, and Naphthalen-1-amine coupling, its product to diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, again diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling. | |||||||||||||||||||
blue. Blue gray powder. Soluble in water as dark blue, solubility of 50 g/L (60 ℃), 60 g/L (97 ℃), soluble in alcohol. The strong sulfuric acid for blu-ray black, diluted for dark purple. The dye solution to join strong hydrochloric acid generation navy to purple precipitation; Add sodium hydroxide solution for red light purple, have precipitation. Cellulose fiber of dyeing, temperature in 80 ℃ maximum when affinity. Good levelness, discharge sex very good: dyeing encounter copper, iron ion basic discoloration. Mainly used for silk, cotton viscose things and carpet of dyeing and printing. But with disperse dyestuffs dye polyester/stick blended fabric. Suitable for a bath dyeing of step. Can also be used for paper dyeing and manufacturing color pigment sediment
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| Raw materials | 2-Amino-1,4-benzenedisulfonic acid-->7-Anilino-4-hydroxy-2-naphthalenesulfonic acid-->1-Aminonaphthalene-6-sulfonic acid-->1-Naphthylamine |
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