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| | DIRECT YELLOW 50 Basic information |
| Product Name: | DIRECT YELLOW 50 | | Synonyms: | 1,5-Naphthalenedisulfonicacid,3,3’-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bis-,tetrasodiumsalt;abcoldirectyellowrlsw;AmanilSupraYellowLRL;C.I.DirectYellow50(29025);tetrasodium 3,3'-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bisnaphthalene-1,5-disulphonate;Concorde Direct Yellow AGFL;Diazine Fast Yellow 2GL;Direct Fast Brilliant Yellow RS | | CAS: | 3214-47-9 | | MF: | C35H24N6Na4O13S4 | | MW: | 956.82 | | EINECS: | 221-728-7 | | Product Categories: | D;Stains and Dyes;Dyes and Pigments;Organics;Stains&Dyes, A to | | Mol File: | 3214-47-9.mol |  |
| | DIRECT YELLOW 50 Chemical Properties |
| density | 1.987[at 20℃] | | solubility | DMSO (Sparingly, Sonicated), Water (Slightly) | | form | Solid | | color | Dark Brown to Very Dark Brown | | Water Solubility | 66.67g/L at 20℃ | | Stability: | Hygroscopic | | LogP | -1.894 at 20℃ | | EPA Substance Registry System | C.I. Direct Yellow 50, tetrasodium salt (3214-47-9) |
| | DIRECT YELLOW 50 Usage And Synthesis |
| Uses | 3,3'-[Carbonylbis[imino(2-methyl-4,1-phenylene)-2,1-diazenediyl]]bis-1,5-naphthalenedisulfonic Acid Sodium Salt (Technical Grade) is a useful research chemical. It is used in water-based ink composition with color-changing by evaporation. | | Preparation | 3-Aminonaphthalene-1,5-disulfonic acid diazo, and a coupling m-Toluidine, then the light gasification. | | Flammability and Explosibility | Nonflammable | | Properties and Applications | red light yellow. Soluble in water for golden brown, solubility of 60 g/L (60 ℃), 80 g/L (97 ℃), slightly soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for quality in red, dilute for green light blue after blue precipitation; In nitric acid solution for purple. The dye solution to join strong hydrochloric acid has the purple precipitation; Add thick sodium hydroxide solution with gold orange precipitation. Cellulose fiber of dyeing, in 80 ℃ maximum when affinity, for the neutral, weak acid dye bath dyeing. Hard to not sensitive. In dyeing copper and iron ion colored light basic unchanged. Mainly used for cotton, viscose, which silk dyeing and printing, and can directly printing, also can to discharge printing color. Can and disperse dyestuffs high temperature polyester/cotton with bath dyeing blended fabric. May also used for the dyeing nylon, leather, paper and electrochemical aluminum color.
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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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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3-4
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3
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6
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2-3
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2
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AATCC
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5
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3
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5
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2-3
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1-3
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| | DIRECT YELLOW 50 Preparation Products And Raw materials |
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