【 WhatsApp】
+86-21-6420 0566
8618501763615
| OEM | OEM Services Provided |
| Feature | Good stability,Easy to Use |
| Classification | Dyes and Pigments |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact us now. |
| Product Name: | Direct Blue 78 |
| Synonyms: | C.I.34200;Kayarus Blue G;Sumilight Supra Blue G;Amanil Fast Blue 4GL;Belamine Fast Blue 4GL;Benzanil Supra Blue 4GL;Calcoform Blue 4GL;Chlorantine Fast Blue 4GL |
| CAS: | 2503-73-3 |
| MF: | C42H25N7Na4O13S4 |
| MW: | 1055.90608 |
| EINECS: | 219-708-8 |
| Product Categories: | Organics |
| Mol File: | 2503-73-3.mol |
| density | 1.383[at 20℃] |
| vapor pressure | 0Pa at 25℃ |
| Water Solubility | 10g/L at 20℃ |
| LogP | -1 |
| EPA Substance Registry System | C.I. Direct Blue 78, tetrasodium salt (2503-73-3) |
| Chemical Properties | Yellowish gray powder. Aqueous solution is blue, adding concentrated hydrochloric acid is reddish blue, adding concentrated sodium hydroxide solution is reddish purple. Soluble in ethylene glycol ether, slightly soluble in ethanol, insoluble in other organic solvents. In concentrated sulfuric acid it is purple sauce to black, after dilution it is sauce red; in concentrated nitric acid it is brownish gray. After dyeing, it is basically unchanged when encountering copper and iron ions. | ||||||||||||||||||||||||||||
| Direct Blue 78 is a good dyeing agent for cotton fabrics. | |||||||||||||||||||||||||||||
| Preparation | 2-Aminobenzene-1,4-disulfonic acid diazo, and 8-Aminonaphthalene-2-sulfonic acid first coupling, its product to diazo, and Naphthalen-1-amine second coupling, again diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid third coupling. | ||||||||||||||||||||||||||||
| Not classified | |||||||||||||||||||||||||||||
| Properties and Applications | blue. Soluble in water for blue, solubility of 15 g/L (60 ℃), 30 g/L (97 ℃), soluble in soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. The strong sulfuric acid in Red sauce for galleries to, diluted Red sauce for; In the light of nitric acid for palm gray. The dye solution to join strong hydrochloric acid for red light blue; Add thick sodium hydroxide solution for red light purple. Water-soluble good, colored light to blue. Dye in bath of copper, iron ion colored light basic unchanged. SDC classification for class B. Neutral white is very good, alkaline white. Mainly used for cotton or viscose dyeing and printing directly, and disperse dyestuffs with bath dyeing polyester/cotton blended fabric. Can also be used for paper, leather and biological dyeing.
| ||||||||||||||||||||||||||||
| [1] Sawada K, Ueda M. Adsorption behavior of direct dye on cotton in non-aqueous media[J]. Dyes and pigments, 2003, 58(1): 37-40. | |||||||||||||||||||||||||||||
| Raw materials | 1-Naphthylamine-->7-Anilino-4-hydroxy-2-naphthalenesulfonic acid |
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
Ready to Start?
For help with solutions customized to your business needs, contact Export Director now.
With 30+ years of experience and We firmly believe that product quality is the basis of cooperation.
Chat Now
Phone
8618501763615
Working hours
Monday to Friday
TEl
+86-21-6420 0566
