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Chemical Name: 1,2-Propanediol
INCI Name: Propylene Glycol
CAS Registry Number: 57-55-6
EINECS Registry Number: 200-338-0
HS Code: 2905320000
Molecular Formula: C3H8O2
Molecular Weight: 76.09
Synonyms: ,2-Dihydroxypropane;E1520;2-hydroxypropanol;methylethyleneglycol;methylglycol;propane-1,2-diol;propylenglycolum.
Application areas
1.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.
2.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.
3.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.
4.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.
5.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.
6.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
Senses：A colorless, transparent, viscous liquid without sediment or suspended matter.
Propylene glycol content：≥99.5
Moisture, %：≤0.2
Initial boiling point (°C)：≥185
Dry point (°C)：≤189
Burning residue, %：≤0.007
Specific gravity (25/25℃)：1.035-1.037
Lead, ppm：≤1.0
acid value：Through the experiment
Indicator range：CP
Senses：Colorless, clear, viscous liquid
Moisture, %：≤0.2
Burning residue：≤2.5mg
Specific gravity (25/25℃)：1.035-1.037
Sulfate, ppm：≤60
Chloride, ppm：≤70
Arsenic, ppm：≤2.0
heavy metal：≤5.0
acid value：≤0.5-0.01 mol/L NaOH
Dipropylene glycol (%)：≤0.1
Propylene oxide (%)：≤0.001
Diethylene glycol content, ppm：≤0.001
Indicator range：USP
Senses：Colorless, transparent, liquid
Propylene glycol content：≥99.5
Moisture, %：≤0.2
Boiling point (°C)：184-189
Burning residue：≤3.5mg
Specific gravity (25/25℃)：1.035-1.037
Sulfate, ppm：≤60
Chloride, ppm：≤70
acid value：≤0.2-0.1 mol/L NaOH
Ethylene glycol content, ppm：≤0.1
Diethylene glycol content, ppm：≤0.1
Indicator range：EP
Senses：Colorless, transparent, liquid
Moisture, %：≤0.2
Boiling point (°C)：184-189
Reducing substances：Through the experiment
Oxidizing substances：≤0.2ml 0.05mol/L sodium thiosulfate
Burning residue, %：≤0.01
Specific gravity (25/25℃)：1.035-1.037
acid value：Through the experiment
Indicator range：BP
Senses：A colorless, transparent, viscous liquid with hygroscopic properties.
Moisture, %：≤0.2
Boiling point (°C)：184-189
Reducing substances：Through the experiment
Oxidizing substances：≤0.2ml 0.05mol/L sodium thiosulfate
Burning residue, %：≤0.01
Specific gravity (25/25℃)：1.035-1.037
acid value：Through the experiment
Ethylene glycol content, ppm：≤10