PPG is insoluble in ether and most aliphatic hydrocarbons

PPG is insoluble in ether and most aliphatic hydrocarbons, and can be used as a base material for daily chemicals, medicine and oil agents. Ppg200, 400 and 600 are soluble in water, and have the properties of lubrication, solubilization, defoaming and antistatic. Ppg-200 can be used as a dispersant of pigment. In cosmetics, ppg400 can be used as a emollient, softener and lubricant. PPG can be used as antifoaming agent in paint and hydraulic oil, antifoaming agent in synthetic rubber and latex processing, refrigerant and coolant of heat transfer fluid, viscosity improver, release agent, solubilizer, additive of synthetic oil, additive of water-soluble cutting fluid, roller oil, hydraulic oil, high temperature lubricant, internal lubricant and external lubricant of rubber.

In general, peg is stable, but it can react with oxygen in air at 120 ℃ or higher. Polyethylene glycol is a kind of polymer of hydrolysis product of ethylene oxide, which is non-toxic and non irritant. It is widely used in various pharmaceutical preparations. The toxicity of polyethylene glycol with low molecular weight is relatively large, and the toxicity of glycol is relatively low. Local administration of PEG, especially mucosal administration, can cause irritation pain. In the external lotion, the product can increase the flexibility of the skin, and has a moisturizing effect similar to that of glycerin.

PPG can be used as the base material of daily chemical, medicine and oil agent

PPG can be used as a base material for daily chemicals, medicine and oil, and can be dissolved in toluene, ethanol, trichloroethylene and other organic solvents. Ppgppg200, 400 and 600 are soluble in water and have the properties of lubrication, solubilization, defoaming and antistatic; ppg-200 can be used as dispersant of pigment; ppg400 can be used as emollient, softener and lubricant in cosmetics. Poly propylene glycol (PPG-2000~8000) has excellent properties such as lubrication, anti foam, heat resistance and freeze-thaw resistance. PPG-3000~8000 is mainly used as a component of combined polyether to produce polyurethane foam, which can be directly or esterified to produce plasticizers and lubricants.

Polyethylene glycol PEG has good water solubility, lubricity, moisture retention and dispersion. It has good solubility with many organic components. It is widely used in cosmetics, pharmaceuticals, chemical fiber, rubber, plastics, paper making, paint, electroplating, pesticides, metal processing and food processing industries. In general, PPG is stable, but it can react with oxygen in air at 120 ℃ or higher. In inert atmosphere, PPG will not change even when heated to 200-240 ℃, and it will undergo thermal cracking when the temperature rises to 300 ℃.

PPG is nonvolatile and non corrosive:

PPG is a colorless to yellowish viscous liquid, non-volatile and non corrosive. It is also used to prepare alkyd resin, emulsifier, demulsifier, lubricating oil and plasticizer. It is soluble in oil, many hydrocarbons, aliphatic alcohols, ketones, esters, etc. The hydroxyl groups at both ends of the molecule can be esterified to form monoester or diester. Its monoester is a non-ionic surfactant and can also react with alcohol to form ether. PPG is used as mold release agent, solubilizer, synthetic oil additive, water-soluble cutting fluid, roller oil, hydraulic oil additive, high temperature lubricant, rubber internal lubricant and external lubricant.

Polyethylene glycol PEG is non-toxic, non irritant and water-soluble. It can be used as organic synthesis medium and heat carrier with high requirements, as metal processing mold agent, metal drawing, stamping or forming lubricant and cutting fluid, grinding, cooling, lubricating and polishing agent, welding agent, etc. Peg is widely used in cosmetics, pharmaceutical, chemical fiber, rubber, plastics, paper, paint, electroplating, pesticide, metal processing and food processing industries. Polyethylene glycol PEG-400 is a kind of liquid, which is suitable for soft capsule. It has a wide compatibility with various solvents and is a good solvent and solubilizer. It is widely used in liquid preparations, such as oral liquid, eye drops, etc. Peg is an ideal material when vegetable oil is not suitable for active ingredient carrier. This is mainly because peg is stable and not easy to deteriorate. The injection containing PEG is safe and stable when heated to 150 ℃.