disodium 2-[1-(2,5-dichloro-4-sulfo-phenyl)-3-methyl-5-oxido-pyrazol-4-yl]azobenzenesulfonate
Acid Yellow 17
CAS: 6359-98-4
Molecular Formula: C16H12Cl2N4O7S2.2Na
disodium 2-[1-(2,5-dichloro-4-sulfo-phenyl)-3-methyl-5-oxido-pyrazol-4-yl]azobenzenesulfonate - Names and Identifiers
disodium 2-[1-(2,5-dichloro-4-sulfo-phenyl)-3-methyl-5-oxido-pyrazol-4-yl]azobenzenesulfonate - Physico-chemical Properties
| Molecular Formula | C16H12Cl2N4O7S2.2Na |
| Molar Mass | 551.29 |
| Density | 1.78[at 20℃] |
| Water Solubility | 120.46g/L at 20℃ |
| Appearance | powder to crystal |
| Color | Light yellow to Brown |
| Storage Condition | Room Temprature |
| MDL | MFCD00053367 |
| Physical and Chemical Properties | Light yellow powder. Soluble in water, the aqueous solution is green and yellow, adding hydrochloric acid or sodium hydroxide solution color unchanged, adding vanadium powder can make its decolorization, but in the air is oxidized, red purple. Slightly soluble in ethanol, acetone, insoluble in other organic solvents. In concentrated sulfuric acid was green yellow, no change after dilution. In concentrated nitric acid in red light yellow. When staining, copper and iron ions were encountered, and the color light was slightly red and dark. |
disodium 2-[1-(2,5-dichloro-4-sulfo-phenyl)-3-methyl-5-oxido-pyrazol-4-yl]azobenzenesulfonate - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| HS Code | 32041200 |
disodium 2-[1-(2,5-dichloro-4-sulfo-phenyl)-3-methyl-5-oxido-pyrazol-4-yl]azobenzenesulfonate - Reference Information
| Color index | 18965 |
| LogP | -2.459 at 20℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | acid yellow 2G is suitable for dyeing wool, silk, nylon and wool, silk fabric printing, good levelness and bright color. It can also be combined with acid red BG and acid blue PFN to dye a variety of light to medium colors; Combined with acid lake blue V or acid lake blue A to dye bright fruit green and green. Also used in leather, paper, electrochemical aluminum coloring. edible yellow pigment. It is mainly used for dyeing and printing of wool and silk fabrics, and can also be used for coloring leather, paper and electrochemical aluminum. mainly used for wool, silk, nylon fabric dyeing, and can be directly printed on the wool, silk fabric, can also be used for leather, coloring of paper and electrochemical aluminium |
| production method | diazotization of sodium p-aminobenzenesulfonate, with 1-(2 ',5'-dichloro-4 '-sulfonylphenyl)-3-pyridone was obtained by salting out. (1) diazotization. Place 15% sodium p-aminobenzenesulfonate solution (100%/173) and 30% sodium nitrite solution (100%/69) in a mixing tank and stir well. (2) to the coupling tank was added a 15% solution of 1-(2 ',5'-dichloro-4-'-sulfophenyl)-3-methylpyrazolone (100% 327.7), start stirring, add ice-cold to 8 ℃, add diazo solution and 20% soda ash solution (100% 94) uniformly and simultaneously within 30-40 minutes, add, pH should be 6.5-7, the temperature was 10 °c or less, and the diazonium salt was coupled until disappearance, and the stirring was continued for 3 hours. According to the 28% volume salting out, pressure filtration, filter cake drying at 100-105 ℃. 880 of standardized dye was obtained for each batch. 1-(2 ',5' dichloro-4 '-sulfophenyl)-3-methylpyrazolone (100%) 393 p-aminobenzenesulfonic acid (100%) 207 with P-aminobenzenesulfonic acid and 1-(2,5-dichloro-4-sulfophenyl)-3-methyl-5-pyrazolone [1-(2,5-dichloro-4-sulfophenyl)-3-methyl-5-pyrazolone] as raw material, diazotization of p-aminobenzenesulfonic acid is coupled with the latter to give the product. After salting out, filtration, drying, grinding to get the finished product.. |
Last Update：2024-04-09 20:52:54
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Product Name: Acid Fast Yellow G Visit Supplier Webpage Request for quotationCAS: 6359-98-4
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Email: 3008007409@qq.com
Mobile: 18021002903
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