sodium 4-(5-hydroxy-3-methyl-4-phenylazo-pyrazol-1-yl)benzenesulfonate
acid yellow 11
CAS: 6359-82-6
Molecular Formula: C16H13N4NaO4S
sodium 4-(5-hydroxy-3-methyl-4-phenylazo-pyrazol-1-yl)benzenesulfonate - Names and Identifiers
| Name | acid yellow 11 |
| Synonyms | acid yellow 11 Acid yellow 11 C.I. Acid Yellow 11, sodium salt sodium 4-(5-hydroxy-3-methyl-4-phenylazo-pyrazol-1-yl)benzenesulfonate sodium 4-{3-methyl-5-oxo-4-[(E)-phenyldiazenyl]-4,5-dihydro-1H-pyrazol-1-yl}benzenesulfonate |
| CAS | 6359-82-6 |
| EINECS | 228-808-0 |
| InChI | InChI=1/C16H14N4O4S.Na/c1-11-15(18-17-12-5-3-2-4-6-12)16(21)20(19-11)13-7-9-14(10-8-13)25(22,23)24;/h2-10,21H,1H3,(H,22,23,24);/q;+1/p-1/b18-17+ |
sodium 4-(5-hydroxy-3-methyl-4-phenylazo-pyrazol-1-yl)benzenesulfonate - Physico-chemical Properties
| Molecular Formula | C16H13N4NaO4S |
| Molar Mass | 380.35 |
| Appearance | Form Powder, color Yellow to slightly orange |
| Storage Condition | Room Temprature |
| Physical and Chemical Properties | Chemical yellow powder, soluble in water, 10% sulfuric acid or sodium hydroxide is added to the aqueous solution, and the color does not change. Soluble in ethanol, yellow. Easily soluble in acetone and ethylene glycol ether. Slightly soluble in benzene, insoluble in other organic solvents. It is yellow in concentrated sulfuric acid and does not change after dilution; it is yellow in concentrated nitric acid. The color of copper ions is redder when dyeing; the color of iron ions is darker. |
| Use | Uses acid yellow G is mainly used for dyeing and direct printing of wool, silk and its fabrics, with good discharge and levelness. Usually in acetic acid dyeing bath dyeing, can also be used to fit beige, camel, gray and other light to medium color. It can also be used for the dyeing of nylon. Used for wool and other fibers in the same bath dyeing, nylon can be dyed, silk seriously stained, acetate fiber slightly stained, cellulose fiber does not stain. Acid Yellow G can also be used for paper, leather, paint, medicine, cosmetics, coloring, can also be made into Lake pigment. |
sodium 4-(5-hydroxy-3-methyl-4-phenylazo-pyrazol-1-yl)benzenesulfonate - Risk and Safety
| Risk Codes | R44 - Risk of explosion if heated under confinement R34 - Causes burns R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful if swallowed R34/44 - |
| Safety Description | S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. |
| UN IDs | 3261 |
| HS Code | 32041200 |
sodium 4-(5-hydroxy-3-methyl-4-phenylazo-pyrazol-1-yl)benzenesulfonate - Reference
| Reference Show more | 1. Chen Lin, Wen, Jia Xin, Liu Xiaoxiao et al. Rapid detection of 12 kinds of yellow pigments adulterated in chuanshanjia by HPLC combined with LC-MS/MS [J]. Chinese patent medicine 2017 03(v.39):118-122. |
sodium 4-(5-hydroxy-3-methyl-4-phenylazo-pyrazol-1-yl)benzenesulfonate - Nature
| EPA chemical information | C. I. Acid Yellow 11, sodium salt (6359-82-6) |
Last Update：2024-04-10 22:29:15
sodium 4-(5-hydroxy-3-methyl-4-phenylazo-pyrazol-1-yl)benzenesulfonate - Production method
Aniline diazotization, coupled with 1-(p-sulfophenyl)-3-methyl-5-pyrazolone, salted out. 1. Diazotize in 560L of water, add 163kg of 30% hydrochloric acid, 55.8kg of 100% aniline, stir and dissolve, add ice to cool the temperature to 0 ℃, add 30% sodium nitrite solution (equivalent to 100 A.4kg) from the liquid surface, and the diazonium temperature is 0-2 ℃ for 30min. At this time, Congo red test paper is blue and potassium iodide starch test paper is slightly blue. Finally, adjust the volume to 1100L L. 2. Put 900L of water into the coupling iron pot, heat to 40 ℃, add 60kg of soda ash, and stir for total dissolution. Then 154.2kg of 1-(p-sulfophenyl)-3-methyl -5-pyrazolone was added, and then 10% soda ash solution (equivalent to 100Hkg) was added after dissolution. Add ice and water to adjust the volume to 2400L and the temperature is 2-3 ℃. Sieve the diazonium liquid into the pot for coupling. The discharging time is 30-40min. During the whole coupling process, keep pH8-8.4 and the temperature does not exceed 5 ℃. After coupling, 1-(p-sulfophenyl)-3-methyl -5-pyrazolone should be excessive. Continue stirring for 2h. Raise the temperature to 80 ℃, calculate the amount of salt added according to the volume of 20-20%, carry out salting out, stir and cool to below 45 ℃ for filtration. Dry at 80 ℃. Get 100 F0kg.
Last Update：2024-04-10 22:29:15
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Product Name: Acid Yellow 11 Visit Supplier Webpage Request for quotationCAS: 6359-82-6
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Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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