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: 2905320000

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

Application areas	Application Notes
Food and beverage industry	Food processing: Used as a humectant, solvent, and food additive in candies, breads, biscuits, etc., to enhance texture and retain moisture.Beverages: Used as a low-sugar sweetener in juices, soft drinks, coffee, and tea to provide moderate sweetness without adding extra calories.
manufacturing	Cooling and antifreeze: Used in automobiles, industrial equipment and air conditioning systems to lower the freezing point, prevent icing, and ensure normal flow in low-temperature environments.
Pharmaceutical manufacturing
Daily chemical industry	Moisturizing and solvent properties: Enhances the spreadability and absorption of skincare and cosmetic products, suitable for various personal care products such as lotions, creams, and lipsticks.
Industrial manufacturing	Chemical raw materials: As a solvent and reaction intermediate, it can be used 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	/	/
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	/	/	/

Product Description