1,2-Propanediol

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.

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

/

/

Chloride, ppm

/

≤ 70

≤ 70

/

/

Lead, ppm

≤ 1.0

/

/

/

/

Arsenic, ppm

/

≤ 2.0

/

/

/

heavy metal

/

≤ 5.0

/

/

/

acid value

Through the experiment

≤ 0.5-0.01 mol/L NaOH

≤0.2-0.1 mol/L NaOH

Through the experiment

Through the experiment

Dipropylene glycol (%)

/

≤ 0.1

/

/

/

/

≤ 0.001

/

/

/

Ethylene glycol content, ppm

/

/

≤0.1

/

≤ 10

Diethylene glycol content, ppm

/

≤ 0.001

≤0.1

/

/