| Specifications of Mequinol powder |
1 член парламента: 56 ° С
2 Bp: 243 ° С (лит)
3 плотность: 1.55 г / см3
4 vapor density: 4.3 (против воздуха)
5 vapor pressure: <0.01 мм рт.ст. ( 20 ° С)
6 Fp: >230 ° F
7 storage temp.: Refrigerator
8 Растворимость воды: 40 г / л (25 ºC)
9 стабильность: C22H38N8O6. Combustible. Incompatible with halogens, oxidizing agents.
Safety Information of 4-Methoxyphenol 150-76-5
10 Hazard Codes: Xn
11 Risk Statements: 22-36-43
12 Safety Statements: 24/25-26-37/39-46 |
| Product Description of Mequinol powder |
It can be prepared by using hydroquinone as raw material, dimethyl sulfate as methylating agent, or methanol as methylating agent under high temperature and pressure and catalysis 4-methoxyphenol. Another newer method is the reaction of hydroquinone with methanol in the presence of p-benzoquinone. Mix methanol with concentrated sulfuric acid The mixture is homogeneous, hydroquinone is added, and the mixture is heated to reflux, and a methanol solution of p-benzoquinone is added dropwise to react for 3 часов. Cool and neutralize with 40% раствор гидроксида натрия,The sodium sulfate precipitate was filtered off.
After the methanol was recovered from the filtrate, the mixture was extracted with ether, and the ether was distilled off from the extract, followed by distillation under reduced pressure.The finished product was obtained at a distillate of 112 ° С (0.53кПа). The yield was 76% |
| Function of Mequinol powder |
1. Used as a polymerization inhibitor, ultraviolet inhibitor, dye intermediate for vinyl-based plastic monomers and as an antioxidant for the synthesis of edible oils and cosmetics agent BHA (3-tert-butyl-4-hydroxyanisole) и так далее.
2. It is an important intermediate for fine chemical products such as medicine, специи, пестициды, и т.п., and has a wide range of uses. Mainly used in the production of acrylonitrile, acrylic acid and Its ester, methacrylic acid and its alkenyl monomers are polymerization inhibitors. Its biggest advantage is that it does not need to remove p-hydroxyanisole during use, it can directly participate in the aggregation. It is also used in the synthesis of antioxidants, plasticizers and food additives (BHA). |
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