New glycol (Neopentyl glycol)

New glycol three-dimensional model Neopentylglycol, new glycol introductionproduct name: neo-glycol (neo, or NPG)product English name: Neopentylglycol; 22-Dimethyl-- 13-propanediolChemical Name:22-Dimethyl-13-propylene glycolMolecular (Formula): C5H12O2Molecular Weight:104.15
CAS (CASNo.) : 126-30-7Physical properties (Physicaland Chemical Properties):white crystalline solids, odorless, moisture-absorbingMelting point 124 to 130 degrees CThe boiling point is 210 degrees CDensity (21 degrees C) 1.06g/cm3Flash point 129 degrees CSelf-ignition point 399 degrees CThe sublimation temperature is 210 degrees CIt is soluble in water, low-grade alcohols, low-grade ketones, ether and aromatic compounds, etctoxicity protection: lowtoxicityRats by mouth LD50 to 6400mg/kgThe mice had a meridian LD50 of 3200 to 6400 mg/kgLess irritation to the skinHowever, heavy drinking can stimulate the central nervous system, causing vomiting, tiredness, drowsiness, breathing difficulties, tremors, kidney congestion and bleeding, liver fat lesions, closed urine, bronchitis and pneumonia and other symptoms, serious cases even lead to deathproduct use:is mainly used in the production of unsaturated resin, polyester powder coating, oil-free acid resin, polyurethane foam, that is, elastomer plasticizer, synthetic plasticizer, surfactants, insulation materials, printing inks, polymerizers, synthetic aerosol oil additivesIn addition, it is also used in the pharmaceutical industryAt the same time, neo-glycol is an excellent solvent that can be used for the selection and separation of aromatic hydrocarbons and cycloalky hydrocarbonsquality standards: HG/T2309-92packaging storage and transportation:solid state bag, the inner layer for plastic bags, outer layer for woven bags, 25KG / bagliquid is packaged in galvanized iron drums, 25kg/barrelstored in a cool, ventilated place, sun protection, heat, moistureStorage and transportation in accordance with general chemical regulations the three major production schools of neo-glycol 1, international, the production of new glycol mainly has three major schools, of which the dismilation process (methanol method) is unique to China the domestic manufacturer of new glycol basically three-legged situation, divided into three groups: hydrogenation process: Jihua BASF dismutization process (methanol method): Methanol process represented by Shandong Chemical Research Institute, which is the latest dismutization improvement process disambiguation process (water-soluble method): The water-soluble process represented by Fufeng Bosto 2, the characteristics of the introduction: (1) hydrogenation process has short process, high yield, high purity, low cost and other advantages Disadvantages: hydrogenation process investment is large, the external environment requirements are high, the price of products is high At present in the domestic market, hydrogenation process OfPG more, such as BSF Korea LG, Japan Mitsubishi, Eastman and so on Among them, BASF and LG of South Korea are competing fiercely in the new glycol market (2) disambiguation process (methanol method) overcomes the shortcomings of investment, quality is far above the national standard, and the price of products is low, in many industries cost-effective is relatively high Cons: Low purity compared to hydrogenation processes The process's sodium forchlorate is a highlight The color is pure white, less impurities, dry base content is more than 99%, and not easy to clump, the quality is better than the synthesis method and the seasonal tetrasterol In the international market, the process of sodium forchlorate is a standout (3) the dismilation process (water-soluble method) investment is not large, the quality and methanol method is similar, but it is easier to clump The difference between sodium metformin and methanol method is relatively large, the color is dark gray or gray, the purity is low, its main selling point is to extract new glycol from the inside