99.5% Propylene glycol
Price:Negotiable
Contact Info
- Add:江蘇省宜興市宜城街道滄浦村, Zip:
- Contact: 周經理
- Tel:13961572207
- Email:sales@etongchem.com
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Description
Additional Information
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Category
Polyol Series
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Describe
Propylene glycol (PG) is a common diol compound with good hygroscopicity, solubility and low toxicity. It is widely used in food, cosmetics, pharmaceuticals, e-cigarette liquids, coatings and industrial solvents.
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Cas No.
57-55-6
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Purity
99.5%
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Synonym(s)
PG
Physical and chemical properties
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1. Chemical Identity
- Chemical Name: Propylene glycol
- IUPAC Name: Propane-1,2-diol
- Synonyms: PG, 1,2-Propanediol, Monopropylene glycol (MPG), α-Propylene glycol
- CAS Number: 57-55-6
- EC Number: 200-338-0
- Molecular Formula: C3?H8?O2?
- Molecular Weight: 76.09 g/mol
- Appearance: Clear, colorless, viscous, hygroscopic liquid.
- Odor: Practically odorless.
- Taste: Faintly sweet taste.
- Melting Point: -59 °C (-74 °F) (supercools readily)
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2. Physical Properties
- Boiling Point: 187-188 °C (369-370 °F) at 1013 hPa
- Density: 1.036 g/cm³ at 20 °C
- Solubility:
- In Water: Miscible (soluble in all proportions).
- In Organic Solvents: Miscible with acetone, ethanol, and chloroform. Soluble in ether.
- Vapor Pressure: 0.11 hPa at 20 °C
- Vapor Density: 2.62 (Air = 1)
- Viscosity: 45.4 mPa·s at 25 °C
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3. Chemical Properties and Stability
- Stability: Stable under normal conditions. Hygroscopic (absorbs moisture from the air). Can oxidize at high temperatures.
- Incompatibilities: Incompatible with strong oxidizing agents (e.g., potassium permanganate), strong acids, and strong bases. Can react with isocyanates.
- Hazardous Decomposition Products: Combustion may produce toxic fumes of carbon monoxide (CO) and carbon dioxide (CO2?).
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4. Other Key Data
- Flash Point: 103 °C (217 °F) - Closed cup
- Autoignition Temperature: 415 °C (779 °F)
- Explosive Limits:
- Lower Explosive Limit (LEL): 2.6 % (V)
- Upper Explosive Limit (UEL): 12.5 % (V)
- Refractive Index (n20/D): ~1.432
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| Product Category | Polyol Series |
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