Mono Propylene Glycol

Origin
China
CAS Number
57-55-6
HS Code
2905.32.00

Basic Info

IUPAC Name
propane-1,2-diol
Molecular Formula
C3H8O2
Molecular Weight (g/mol)
76.0900
Synonyms & Trade Names
Propylene glycol; MPG; 1,2-Propanediol; E1520
Purity / Assay (%)
99.5% min
Physical Form
Liquid
Concentration
Pure substance
Appearance / Color
Clear to slightly colored liquid
Odor
Almost odorless
Melting Point (°C)
-59.0000
Boiling Point (°C)
188
Density (g/cm³)
1.0360
Solubility in Water
Miscible
Signal Word
Warning
GHS Hazard Class
Eye irritant
H-Statements
H319
P-Statements
P264|P280|P305+P351+P338
REACH Status
Registered
Drug Precursor Status
Non-precursor
Storage Class (GHS)
13
Storage Conditions
Cool, dry place

Technical Document

Brief Overview
Mono propylene glycol (also known as propylene glycol, PG, propan1, 2diol, and MPG) is a clear, colorless, and viscous liquid with a characteristic odor which has the formula C3H8O. It is soluble in water and has hygroscopic properties. MPG is used across a wide range of industries due to its low toxicity coupled with a depressed freezing point upon mixing with water.
Manufacturing Process
Mono propylene glycol is produced mainly from propylene oxide. The most common process is the non-catalytic hydrolysis of propylene oxide in a high-temperature and high-pressure environment. The second method is the catalytic method which can proceed at 150 °C in the presence of ion exchange resin or a small amount of sulfuric acid or alkali. Mono propylene glycol can also be produced from glycerol, a bio-diesel by-product.