Products

The Right Chemicals for Your Applications

Propylene glycol CAS#57-55-6

Propylene glycol CAS#57-55-6

Basic Information

Propylene glycol
1,2-propanediol
colorless viscous liquid

Propylene glycol, also known as 1,2-propanediol, is a colorless, viscous liquid with a faint sweet odor. It mixes completely with water and is compatible with many organic solvents. Typical industrial applications include unsaturated polyester, epoxy and polyurethane resin manufacture, along with solvent, lubricant and antifreeze formulations. Its moisture-retaining character also supports humectant use in appropriately selected formulation grades.

Can't Find The Product You Need?

Tell Us Your Product Requirements, Specifications And Target Industry, Our Professional Team Will Reply You Within 24 Hours.

Chat Now
Chat Now
product description

High Purity and Quality: Industrial-grade 1,2-propanediol has a purity of ≥99.5%, ensuring reliable performance for industrial and laboratory applications.


Excellent Solubility: Fully miscible with water and most organic solvents, allowing versatile use in various formulations and chemical processes.


Wide Thermal Range and Stability: With a melting point of −59°C and a boiling point of 187°C, 1,2-propanediol is thermally stable and suitable for applications across a broad temperature range.


Safe and Chemically Stable: The compound is chemically stable under normal conditions, though it is incompatible with strong oxidizing agents, making it safe for typical industrial use.



Product Description of Propylene glycol CAS#57-55-6

1,2-Propanediol (Propylene Glycol, CAS 57-55-6) is industrial grade with purity ≥99.5%. It is a colorless viscous liquid, almost tasteless with a faint sweet odor. It has a melting point of −59°C, a boiling point of 187°C, a vapor pressure of 0.011 kPa at 20°C, and a relative density of 1.036 at 20°C. It is miscible with water in all ratios and compatible with most organic solvents. It remains stable under normal conditions and should be stored away from strong oxidizing agents.


Product Application of Propylene glycol CAS#57-55-6

Propylene glycol has similar uses to other glycol products. It serves as a major raw material for manufacturing unsaturated polyester, epoxy resin and polyurethane resin, which consumes around 45% of its total output. Unsaturated polyester is commonly applied in reinforced plastics and surface coatings. Thanks to its good viscosity, moisture retention and non-toxicity, propylene glycol is also widely used in food, pharmaceutical and cosmetic fields as a humectant, antifreeze, lubricant and solvent.


Product Specifications

Parameters


Melting point-60 °C (lit.)
Boiling point187 °C (lit.)
density1.036 g/mL at 25 °C (lit.)
vapor density2.62 (vs air)
vapor pressure0.08 mm Hg ( 20 °C)
refractive indexn20/D 1.432(lit.)
FEMA2940 | PROPYLENE GLYCOL
Fp225 °F
storage temp.Store at +5°C to +30°C.
solubilityChloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)
pka14.49±0.20(Predicted)
formViscous Liquid
colorAPHA: ≤10
Specific Gravity1.038 (20/20℃)1.036~1.040
PH6-8 (100g/l, H2O, 20℃)
Odorat 100.00 %. odorless very slight alcoholic
Odor Typeodorless
Optical Rotation-0.11° (C=1.00g/100ml, CHCL3)
biological sourcesynthetic
explosive limit2.4-17.4%(V)
Water Solubilitymiscible
SensitiveHygroscopic
Merck147,855
JECFA Number925
BRN1340498
Dielectric constant32
InChIKeyDNIAPMSPPWPWGF-UHFFFAOYSA-N
LogP-0.92
Surface tension35.44mN/m at 298.15K
CAS DataBase Reference57-55-6(CAS DataBase Reference)
NIST Chemistry ReferencePropylene glycol(57-55-6)
EPA Substance Registry SystemPropylene glycol (57-55-6)


Safety Information


Safety Statements24/25
WGK Germany1
RTECSTY2000000
Autoignition Temperature779 °F
TSCAYes
HS Code29053200
Hazardous Substances Data57-55-6(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 19400 - 36000 mg/kg LD50 dermal Rabbit 20800 mg/kg


Factory Showcase
拼图_美图设计室-(1)
Shipping And Transportation

Delivery Time

Inventory 2-3 working days New manufacturing 7-10 working days

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
We only provide highest quality goods available, accompanied by after support!

拼图_美图设计室
FAQ

1. What products does Shandong Junzheng Chemical supply?
We supply inorganic chemicals, organic solvents, water treatment chemicals, and surfactants, including calcium chloride, soda ash, sodium bicarbonate, caustic soda, citric acid, ethyl acetate, and SLES. Please contact us to confirm specific product availability.


2. Which industries do your products serve?
Our products serve pharmaceutical, agrochemical, dye, rubber, construction, coal processing, and other chemical industries. Product suitability depends on the required grade, specifications, and application.


3. How can I get a quotation?
Please provide the product name, CAS number, required specifications, quantity, packaging requirements, and destination port. These details help us prepare an accurate quotation.


4. How do you control product quality?
We follow strict quality testing procedures supported by technical personnel, research equipment, and an established management system. Specific quality requirements can be confirmed before placing an order.


5. Can you help me select a suitable chemical?
Yes. Our technical team can assist with product selection based on your application and required specifications. Please share your intended use and key technical requirements.

Contact Us
Submit
Recommendation