Chinese name: Propylene glycol

Chemical name: 1,2-Propanediol

INCI Name: Propylene Glycol

CAS Registry Number: 57-55-6

EINECS login number: 200-338-0

HS Code: 2905 320000

Molecular _formula: _C3H8O2

Molecular weight: 76.09

Synonyms: 1,2-dihydroxypropane; 1,2-Dihydroxypropane; E1520; 2-hydroxypropanol; methylethyleneglycol; methylglycol; propane-1,2-diol; propylenglycolum.

Application areas

Food and beverage industry	As a food additive, humectant, and solvent, it can enhance the texture of food and keep it moist.It is widely used in food processing, such as in the production of candy, bread, and biscuits, and in the production of seasonings and flavorings.
Beverage industry	Fruit juices and soft drinks: Adding sorbitol can provide a moderate sweetness to fruit juices and soft drinks without introducing additional sugar and calories.Coffee and tea beverages: As a sweetener for coffee or tea, sorbitol is suitable for those seeking low-sugar, low-calorie drinks.
manufacturing	As a coolant and antifreeze, it lowers the freezing point of the liquid and prevents the cooling system from freezing. It is commonly used in automobiles, industrial equipment, and air conditioning systems to ensure that the liquid can still flow under cold conditions.
Pharmaceutical manufacturing	As a carrier for drugs and vaccines, propylene glycol stabilizes and extends the shelf life of medications. In pharmaceutical processes, it serves as a solvent and diluent, and also plays a role in regulating temperature and humidity in pharmaceutical products.
Daily chemical industry	It possesses moisturizing and solvent properties, making cosmetics easier to apply and absorb. It can be added to skincare, cosmetic, and personal care products such as lotions, creams, and lipsticks.
Industrial manufacturing	As a solvent and reaction intermediate, it is used in the synthesis of various chemical products. It has wide applications in the synthesis of resins, coatings, paints, solvents, and polymers.

Packaging

ton containers, leather drums, tank trucks

Stability and storage conditions

Propylene glycol is hygroscopic and should be stored in tightly closed containers, such as glass, plastic, aluminum, and stainless steel containers, in a cool, dry place, avoiding direct sunlight. Propylene glycol is a flammable liquid; therefore, fire safety regulations must be followed during storage and handling. Keep away from open flames, heat sources, and oxidizers.

Product Compliance

Indicator range	GB29216	CP	USP	EP	BP
Senses	A colorless, transparent, viscous liquid without sediment or suspended matter.	Colorless, clear, viscous liquid	Colorless, transparent, liquid	Colorless, transparent, liquid	A colorless, transparent, viscous liquid with hygroscopic properties.
Propylene glycol content	≥99.5	/	≥99.5	/	/
Moisture, %	≤0.2	≤0.2	≤0.2	≤0.2	≤0.2
Initial boiling point (°C)	≥185	/	/	/	/
Dry point (°C)	≤189	/	/	/	/
Boiling point (°C)	/	/	184-189	184-189	184-189
Reducing substances	/	Through the experiment	/	Through the experiment	Through the experiment
Oxidizing substances	/	/	/	≤0.2ml 0.05mol/L sodium thiosulfate	≤0.2ml 0.05mol/L sodium thiosulfate
Burning residue, %	≤0.007	≤2.5mg	≤3.5mg	≤0.01	≤0.01
Specific gravity (25/25℃)	1.035-1.037	1.035-1.037	1.035-1.037	1.035-1.037	1.035-1.037
Sulfate, ppm	/	≤60	≤60	/	/