Product Name: 1,2-Propanediol

Alias: Propylene Glycol; Propane-1,2-diol; PROPYLENEGLYCOLTECHGRADE; PG

CAS No.: 57-55-6

EINECS No.: 200-338-0

Molecular Formula: C3H8O2

Molecular Weight: 76.09

Brief Introduction:

1,2-Propanediol is an organic compound with the chemical formula C3H8O2, which is miscible with water, ethanol and various organic solvents. Under normal conditions, it is a colorless viscous liquid, almost tasteless, with a slightly sweet smell.

Propylene glycol can be used as a raw material for unsaturated polyester resin, and can be used as a wetting agent in combination with glycerin or sorbitol in cosmetics, toothpaste and soap. In hair dyes, it is used as a humidity control and hair leveling agent, as well as an antifreeze agent, and also used in cellophane, plasticizer and pharmaceutical industry.

Specifications of Industrial Grade:

Test Items	Specifications
Appearance	Colourless transparent liquid, no visible impurities
Assay	Not less than 99.50%
Moisture	Not more than 0.10%
Chroma(Pt-Co)	Not more than 10
Distillation Range(20℃)	184℃ ~ 190℃
Density(20℃)	1.034 g/cm3 ~ 1.036 g/cm3
High temperature resistance chromaticity(Pt-Co)	Not more than 20

Applications of our Propylene Glycol:

1,2-Propanediol is an important raw material for unsaturated polyester, epoxy resin, polyurethane resin, plasticizer, and surfactant. The amount used in this area accounts for about 45% of the total consumption of propylene glycol, this unsaturated polyester is widely used in surface coatings and reinforced plastics.

1,2-propanediol has good viscosity and hygroscopicity, and is widely used as hygroscopic agent, antifreeze agent, lubricant and solvent in the food, pharmaceutical and cosmetic industries. In the food industry, 1,2-propanediol reacts with fatty acids to form propylene glycol fatty acid esters, which are mainly used as food emulsifiers; 1,2-propanediol is an excellent solvent for seasonings and pigments. Due to its low toxicity, it is used as a solvent for spices and food coloring in the food industry.

1,2-Propanediol is commonly used in the pharmaceutical industry as a solvent, softener and excipient for the manufacture of various ointments and ointments, and as a solvent for blending agents, preservatives, ointments, vitamins, penicillin, etc. in the pharmaceutical industry. Because propylene glycol has good miscibility with various spices, it is also used as a solvent and softener for cosmetics.

1,2-Propanediol is also used as a tobacco moisturizer, antifungal agent, food processing equipment lubricant and solvent for food marking inks. Aqueous solutions of 1,2-propanediol are effective antifreeze agents. It is also used as tobacco wetting agent, antifungal agent, fruit ripening preservative, antifreeze and heat carrier, etc.

Packaging:
200kg galvanized drums or 200kg paint drums.

Storage and Transportation:

Measures for Safe Handling: Avoid inhalation or contact with this product. Use only in ventilated areas. Wash thoroughly with water after handling or use.

Conditions for Safe Storage: Although this product does not spontaneously ignite, it is combustible. Long-term storage does not deteriorate, but the opening is easy to absorb moisture. Storage and transportation containers should be made of galvanized iron drums, aluminum or stainless steel. Store and transport according to the regulations of general low-toxic chemicals. Avoid contact with water and humid environment. Storage tanks must be kept clean, dry and free from rust. It must be stored in a place with dikes, ventilation, and away from sunlight, open flames and other heat sources. For large storage tanks (capacity of 100 m3 or above), nitrogen blanketing is recommended. Keep containers tightly closed.

Storage Temperature: Max. 40°C.

Shelf Life:
12 months if stored under above conditions.