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Cas 9002-88-4 Manufactor Propylene Glycol CAS 57-55-6 China Best Price – Chemwin Detail:

Product NamePropylene glycol

Molecular format:C3H8O2

CAS No:57-55-6

Product molecular structure:

Propylene glycol

Specification:

Item

Unit

Value

Purity

%

99.5 min

Color

APHA

10max

Water Content

%

0.05max

Appearance

-

Colorless transparent liquid,less smell

 

Chemical Properties

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 a diol having the general nature of the alcohol. It can react with inorganic and organic acids to generate mono-or di-esters. It reacts with propylene oxide to generate ether, with hydrogen halide to generate halohydrin, and with acetaldehyde to generate methyl dioxolane.

 

Application:

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.


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Cas 9002-88-4 Manufactor Propylene Glycol CAS 57-55-6 China Best Price – Chemwin detail pictures


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Good quality comes 1st; assistance is foremost; business enterprise is cooperation is our business enterprise philosophy which is regularly observed and pursued by our company for Cas 9002-88-4 Manufactor Propylene Glycol CAS 57-55-6 China Best Price – Chemwin , The product will supply to all over the world, such as: Albania, America, New Zealand, Hard work to keep making progress, innovation in the industry, make every effort to first-class enterprise. We try our best to build the scientific management model, to learn abundant experienced knowledge, to develop advanced production equipment and production process , to create the first-call quality goods, reasonable price , high quality of service , quick delivery , to present you create new value .
  • Adhering to the business principle of mutual benefits, we have a happy and successful transaction, we think we will be the best business partner.
    5 Stars By Natalie from Lithuania - 2017.11.29 11:09
    The factory has advanced equipment, experienced staffs and good management level, so product quality had assurance, this cooperation is very relaxed and happy!
    5 Stars By James Brown from Sweden - 2018.12.25 12:43
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