1. Product features: molecular formula ch3och2ch3, molecular weight 76.1, vapor pressure 43.99kpa/20 ℃, flash point - 17 ℃, melting point 104.8 ℃, boiling point 42.3 ℃, relative water density 0.86; relative air density 2.63, slightly soluble in water, miscible with ethanol, ether and other organic solvents, At present, the commercial products are mainly a mixture of 85% methylal and 15% methanol, which is colorless and has the smell similar to chloroform.

2. Purpose:

① Application in insecticide formulation: most insecticides use pyrethroids, such as deltamethrin, permethrin, beta cypermethrin and deltamethrin. They are difficult to dissolve in deodorized kerosene and water base. Therefore, they are usually dissolved with additives such as dichloromethane, xylene, acetone and isopropanol before preparing insecticides. The solubility ratio of methylal to pyrethroid is higher The solvent is good, low cost and can replace chlorine containing solvent;

② Application in leather polish and Automobile Polish: the formulation of leather polish generally uses a small amount of solid wax, microcrystalline paraffin, beeswax, palm wax, etc. if dichloromethane, solvent gasoline, turpentine are used to dissolve, it is difficult and easy to separate layers, which makes the product quality unstable. After using methylal, the solvent performance and quality can be improved The same situation exists in the formulation of automobile polishing agent, especially the water solubility of methylal, which plays an important role in improving the stability of emulsified wax;

(3) application in the air freshener formula: at present, the essence of the air fresheners sold on the market usually use ethanol as solvent to achieve mutual dissolution with propyl butane, and use more ethanol to influence the odour of fresheners. After using methyl acetal, the solubility of flavor can be greatly improved, and the amount of ethanol can be reduced. The fragrance of fresheners can be improved and the emission of VOCs will be reduced. Especially for dry fog type air fresheners, the use of a small amount of methal can make the flavones and propane mutually soluble, and better reflect the dry fog type of "dry".

④ Application in the ribbon formula: in the ribbon formula, the polymer polyacrylic acid ester solid raw material is mainly used. In the original formula, F11 is used as the solvent. With the prohibition of freon, methylal is used as the solvent, which will achieve the purpose of good solubility and fast volatility;

⑤ Application of F11 and F113 in the formulation of cleaning agent for electronic equipment: at present, F11 and F113 are mostly used as the main raw materials in the production. With the prohibition of freon, it will be replaced by methylal;

Methylal is used for quantitative dissolution in grease, wax, nitrofiber, natural resin, rosin, tall oil, most synthetic resin, polystyrene, vinyl acetate polymer and copolymer, polyester, acrylate, metaacrylate, polyamine resin, epoxy resin, chlorinated rubber, etc;

⑥ When a small amount of methylal is mixed with ethanol, ester or ketone, the solvent can get synergistic effect. These characteristics of methylal make it especially suitable as additive in paint and varnish formulation, glue and binder, ink and various aerosol products, so as to obtain excellent homogeneous phase;

⑦ In the field of fuel, it is used as the additive of diesel oil, bio gasoline and methanol gasoline to improve the atomization effect of fuel and make the fuel utilization rate higher. Methylal, a new solvent, has excellent physicochemical properties, i.e. good solubility, low boiling point and good water solubility. It can be widely used in cosmetics, pharmaceuticals, household products, industrial automotive products, industrial automotive products, insecticides, leather polish, rubber industry, paint, ink and other products Aldehydes have good degreasing ability and volatility. They can replace F11 and F113 and chlorine containing solvents as cleaning agents. Therefore, aldehydes can also replace freon, reduce volatile organic compounds (VOCs) emissions and reduce air pollution.

3. Storage: store in a cool and ventilated warehouse. Keep away from fire and heat sources. The storage temperature should not exceed 29 ℃. Keep the container sealed. It should be stored separately from oxidants and acids, and should not be mixed. It should not be stored in large quantity or for a long time. Explosion proof lighting and ventilation facilities are adopted. It is forbidden to use mechanical equipment and tools that are easy to produce sparks. The storage area shall be equipped with leakage emergency treatment equipment and appropriate materials.

4. Packaging: dangerous chemicals can be packed in tank cars.