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Methyl methacrylate (Methyl methacrylate)

National standard excellent

一口价: 15700 YUAN/Ton 10-21 09:11 Update

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Methyl methacrylate

Dongying Hongxu factory tank farm

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T/T ; L/C ;

Place of delivery: Need to ask for quotation with the seller
Specification weight Scattered water

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  • 2-Propenoic acid, 2-methyl-, methyl ester
  • 2-Propenoicacid, 2-methyl-, methyl ester
  • Methyl methacrylate
+Expand -Stow
80-62-6 C5H8O2 Greater than or equal to the national standard 100.12 National standard excellent Dongying, Shandong Huanyi world Dongying Hongxu 3824909990

Product Description


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Nature Description

Methyl Methacrylate MMA is a colorless liquid, which is volatile and flammable. Melting point is-48 ℃, boiling point is 100-101 ℃,24 ℃(4.3kPa), relative density is 0.9440(20/4 ℃), refractive index is 1.4142, Flash Point (Open Cup) is 10 ℃, vapor pressure (℃)5.33kPa. Soluble in ethanol, ether, acetone and other organic solvents, slightly soluble in ethylene glycol and water. It is easy to polymerize in the presence of light, heat, ionizing radiation and catalyst.
Scattered water 0.943 100oC -48oC 8oC 15.9G/L(20oC) 1.413-1.415 15.9G/L(20oC)

Product Applications

Methyl Methacrylate MMA it is used as monomer of organic glass and also used to manufacture other resin, plastic, paint, adhesive, lubricant, wetting agent of wood and cork, paper Polish, etc.

Production method

1. Acetone cyanohydrin route acetone cyanohydrin reacts with sulfuric acid to generate methacrylamide sulfate. After hydrolysis, methyl methacrylate crude product is obtained by transesterification with methanol, and then the finished product is obtained by salting out, crude distillation and distillation. Usually acetone cyanohydrin is made from sodium cyanide. Raw material consumption quota: methyl ketone cyanohydrin 1100 kg/t, sulfuric acid 2100 kg/t, methanol 490 kg/t.

2. Isobutene route Isobutene is oxidized by air in the presence of molybdenum catalyst. Isobutene is oxidized to methacrolein first, and then further oxidized to methacrylic acid. Methyl acrylic acid and methanol are reacted to obtain methyl methacrylate. Recently, another one-step oxidation process has been developed. Isobutene is directly oxidized to methacrylic acid by using N204 as oxidant and k2co 3 or MnO 2 as catalyst. Then, methanol was used for further transesterification.

3. Propylene route propylene, carbon monoxide and methanol undergo carbonylation reaction to generate methyl 2-methoxyisobutyrate, and then decompose into methyl methacrylate and methanol through hydrolysis reaction.

4. Isobutyraldehyde one-step oxidation using heteropolyacid and its salts as catalyst, methacrylic acid is produced by one-step oxidation of isobutyraldehyde, and methacrylic acid is then reacted with methanol to methyl methacrylate.

Security

F

S24: avoid contact with skin. S37: use appropriate protective gloves. S46: in case of accidental swallowing, seek doctor's advice immediately (display product container or label).

R11: very flammable. R43: skin contact will produce allergic reactions. R37/38: it can stimulate respiratory tract and skin.

UN1247

The warehouse is ventilated for cryodrying and stored separately from oxidant and acid. It is not suitable for long storage to prevent polymerization.

III

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