Propylene glycol is scientifically named as "1,2-propanediol", and has a chemical formula of CH3CHOHCH2OH and a molecular weight of 76.10. There is a chiral carbon atom in the molecule. Its racemate is a hygroscopic viscous liquid and is slightly spicy. It has a specific gravity of 1.036 (25/4 °C), a freezing point of-59 °C, and a boiling point of 188.2 °C, respectively 83.2 °C (1,333 Pa). It is miscible with water, acetone, ethyl acetate and chloroform, and is soluble in ether. It is soluble in many essential oils, but is not miscible with petroleum ether and paraffin oil. It is relatively stable to heat and light, and is more stable at low temperatures. Its L-isomer has a boiling point of 187 to 189 °C and a specific optical rotation [α] of D20-15.0°. It can be oxidized at high temperatures to propionaldehyde, lactic acid, pyruvic acid and acetic acid.  

Propylene glycol is used for similar applications as other glycols.
Propylene glycol is an important raw material for unsaturated polyester, epoxy resin, and polyurethane resin. The use amount in this area accounts for about 45% of the total consumption of propylene glycol. Such unsaturated polyester is used extensively for reinforced plastics and surface coatings. Propylene glycol is excellent in viscosity and hygroscopicity and is non-toxic, and thus is widely used as hygroscopic agent, antifreeze, lubricants and solvents in the food, pharmaceutical and cosmetic industry. In the food industry, propylene glycol reacts with fatty acid to give propylene ester of fatty acids, and is mainly used as food emulsifier; Propylene glycol is a good solvent for flavorings and pigments. Propylene glycol is commonly used as solvents, softeners and excipients, etc. in the pharmaceutical industry for the manufacture of various types of ointments and salves. Propylene glycol is also used as a solvent and a softener for cosmetic since it has good mutual solubility with various spices. Propylene glycol is also used as tobacco moisturizing agents, antifungal agents, food processing equipment lubricants and solvents for food marking ink. Aqueous solution of propylene glycol is an effective anti-freeze agent.

Q:  Are You Factory?
A:  Yes,We Are Factory.
Q:  What is your purity of Methylene Chloride? And how can you guarantee your quality?
A:  99.95%min. Our factory is one of the biggest  Methylene Chloride manufacturer in china which has very the mature      production line. So you can be certain the quality is stable and good. 
Q:  How about your delivery? How long is your delivery time?
A:   Prompt and reliable delivery by professional shipping line.
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q:  Do you have experience of export before?
A:  Yes, we do. We have over 10 years export experience and export over 200 fcls regularly by month. We are one of the largest distributors of chemicals industry sales.
Q:   What is the payment terms?
A:   T/Tand L/C
Q:   What is the minimum order quantity?
A:   20'FCL container
Q:   Which kind of package do you have?
A:   Iron drums, IBC Drums, Flexitank, ISO TANK and bags etc.
Q:   How can I get samples?
A:   We provide you samples for free, but you have to pay for the courier charges.