Chemical Information
Chemical Formula: C₃H₈O₂
Molecular Weight: 76.09
CAS No.: 57 55 6
Aliases: Propylene Glycol, 1,2 Propanediol, Methyl ethylene glycol, PG
Density: 1.036 g/cm³ (20℃)
Melting Point: -59℃
Boiling Point: 187.2℃
Appearance: Colorless transparent viscous liquid, practically odorless, slightly sweet, hygroscopic
1. Pharmaceutical Industry
Applications:
Solubilizes, stabilizes and moisturizes pharmaceutical formulations; acts as excipient and preservative booster for injections, oral liquids, topical creams and sprays.
Note: Only pharmaceutical grade is for medical use. Industrial grade is not for medical, oral or skin contact.
2. Coatings & Inks
Applications:
Serves as slow-drying, antifreeze additive for water-based coatings; works as ink solvent to stabilize volatilization and improve finish.
3. Heat-Transfer & Antifreeze
Applications:
Low-toxic heat transfer fluid and antifreeze for HVAC, solar and food equipment; corrosion inhibitor for hydraulic fluids and lubricants.
4. Cleaning, Textile & Leather
Applications:
Low-corrosion degreaser for metal/plastic parts; assists dyeing uniformity, moisturizes and softens leather.
5. Industrial Fluids & Fine Chemicals (Industrial Grade)
Applications:
Key material for de-icing fluids, hydraulic oils and brake fluids; chemical intermediate for esters, surfactants and agrochemicals; used for dust suppression and flue gas treatment.
Important Note: Industrial grade (HG/T 5392-2018) is prohibited for food, cosmetics and human contact use.
