Propylene glycol CAS No.57-55-6

Propylene Glycol 

CAS No.: 57-55-6 | FEMA No.: 2940

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1. Chemical Identification

Property	Specification
IUPAC Name	Propane-1,2-diol
Molecular Formula	CH₃CH(OH)CH₂OH
Molecular Weight	76.09 g/mol
Beilstein Number	1340498
EC Number	200-338-0

Synonyms:
1,2-Propanediol, PG, Methyl ethyl glycol

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2. Physical Properties

Parameter	Value
Appearance	Colorless viscous liquid
Density	1.036 g/cm³ at 25°C
Boiling Point	188.2°C
Melting Point	-59°C
Solubility	Miscible with water and most organic solvents

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3. Food Industry Applications

Functional Roles:
✓ Anti-caking agent
✓ Antioxidant
✓ Humectant
✓ Flavoring agent
✓ Emulsifier
✓ Stabilizer
✓ ThickenerCommon Uses:
✓ Baked goods
✓ Dairy products
✓ Beverages
✓ Processed foods

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4. Safety Information

Regulatory Status:

FDA 21 CFR 184.1666 – Generally Recognized As Safe (GRAS)EU E-number E1520

Safety Profile:

Oral LD₅₀ (rat): 20 g/kgSkin Irritation: MildEye Irritation: Moderate

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