Methylal: Molecular formula CH3OCH2OCH3, molecular weight 76.1, vapor pressure 43.99kpa / 20 ℃,
flash point -17 ℃, melting point of 104.8 ℃, boiling point of 42.3 ℃, relative water density of 0.86;
Relative air density 2.63, slightly soluble in water, miscible in most organic solvents such as ethanol
and ether, commercial products are mainly 85% mixed solution of methylal and 15% methanol,
which is a colorless liquid with a chloroform-like smell.
Methylal YuHang Chemical
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Storage and Packaging
Warehouse temperature should not exceed 29 ℃. Keep the container sealed. It should be stored separately with oxidants, acids, avoid mixing reservoir. It shouldn’t be stored in large quantities or for a long time.
Using explosion-proof lighting, ventilation facilities. Prohibit the use of spark-prone machinery and equipment and tools. Storage area
should be equipped with emergency spill equipment and appropriate containment materials.
Packing: Dangerous chemicals tank car cans.
① Application in Pesticide Formulation: Most of the pesticide formulations use amylin, chrysanthemum, beta-cypermethrin and deltamethrin, which are very difficult to deodorize kerosene and water base. Therefore, it is often necessary to first prepare the pesticide by dissolving it with additives such as methylene chloride, xylene, acetone and isopropanol. The solubility of the methylal to pyrethroids is better than that of the above solvent, the cost is low and then could replace chlorine solvent;
②Application in leather polish, automotive polish formulation: leather polishing agent formulations generally use a small amount of solid wax, microcrystalline wax, beeswax, carnauba wax, etc.If use of methylene chloride, solvent gasoline, turpentine and so on are often more difficult to dissolve, and easy to stratify, so that product quality is unstable, the use of methylal, you can improve the solvent performance, improve quality, and volatile fast, easy to use; Automotive polish formulations also exist the same situation , especially the water-soluble properties of methylal to improve the stability of emulsified wax played a significant role;
③Application in air freshener formulation: On the market sold currently of air fresheners usually use ethanol as a solvent to achieve mutual solubility with propane, use of more ethanol, affecting the smell of fresheners; Usage of hypothyroidism after the aldehyde, could greatly improve the solubility of flavor, reduce the amount of ethanol, could improve the smell of fresheners, reduce VOCs emissions. Especially for the dry mist air freshener, usage of a small amount of methylal can make the flavor butane miscible, better reflect the dry fog of the "dry";
④ Application in ribbon formula: Ribbon in the main formula polymer polyacrylate solid raw materials, the original formula used F11 as a solvent, with the Freon disabled, usage of methylal as a solvent, will be able to achieve solubility good, volatile quick purpose;
⑤ Appliction in the electronic equipment cleaner formulations: Most of the current production of F11 and F113 as the main raw material, with the Freon disabled, will be methylal replaced;
Formaldehyde is widely used in greases, waxes, nitrocellulose, natural resins, rosin, tall oil, most synthetic resins, polystyrene, vinyl acetate polymers and copolymers, polyesters, acrylates, metaacrylates, polyamines Resin, epoxy resin, chlorinated rubber for quantitative dissolution.
⑥ A small amount of methylal mixed with ethanol, ester or ketone can make the solvent synergistic effect, these characteristics of methylal make it especially suitable as a paint and varnish formula, glue and adhesive, ink and various aerosol products in the additive, so that products have excellent uniform phase;
⑦ In the field of fuels, diesel additives, bio-gasoline and methanol-gasoline additives are added to improve the atomization effect of the fuel and make the fuel utilization rate higher.
New Solvents -- Methylal, which have excellent physicochemical properties, like good solubility, low boiling point and good compatibility with water. They 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,but also because methylal has good oil removal capacity and volatility, as a detergent can be replaced F11 and F113 and chlorine-containing solvents, it is also an alternative to freon, reduce emissions of volatile organic compounds (VOCS), reduce environmental pollution to the environment products.