Propylene Glycol


Propylene Glycol [USP/ BP grade]

Propylene glycol is a colourless, odourless liquid which is generally recognized as safe (GRAS) by the U.S. Food and Drug Administration (FDA) in 21 CFR § 184.1666, for use as a direct food additive under the conditions prescribed. It is approved by the U.S. FDA for certain indirect food additive uses. Propylene Glycol is used in cosmetics and as an excipient (inert solvent or carrier) in pharmaceuticals. It is used to absorb extra water and maintain moisture in certain medicines, cosmetics, or food products. It is used as a solvent for food colours and flavours.

Cosmetic – pharmaceutical

Propylene Glycol (PG) USP / EP is a pharmaceutical grade of Mono-Propylene Glycols (PG or MPG) with a specified purity greater than 99.8% and is suitable for use in the manufacture of:

      • Perfumes and colognes
      • Baby care products (baby wipes)
      • Hand cleansing and disinfecting gels
      • Colour cosmetics (eyeliner, lipsticks, etc)
      • Dental care (mouth washes and toothpastes)
      • Bath & Shower Products

It has been confirmed as safe and hygienic, and provides unique inherent properties with regard to holding/attracting both water- and oil-based substances.  In food it is used to retain food colour pigments and distribute them evenly within the mixture.

Food application

Propylene glycol USP/EP (pharmaceutical grade) has been approved for use as a food additive under the E-number E 1520.

Other names for propylene glycol are 1,2-dihydroxypropane, 1,2-propanediol, methyl glycol, and trimethyl glycol  for more technical information

Additional information

Weight N/A
Dimensions N/A

0.50L (500mL), 1.00L (1000mL), 5.00L (5000mL), 20.0L (20000mL)

Technical Data

Typical vales

Physical state:                           Liquid
Colour:                                     Colourless
Odour:                                     Odourless
Solubility:                                 Miscible with water.
Specific Gravity:                        1.036 @20°C
Relative Vapour Density (air=1): 2.5 @20°C
Vapour Pressure (20 °C):            ca. 10 Pa
Flash Point (°C):                        99
Flammability Limits (%):            2.6-12.6
Autoignition Temperature (°C):   421
Boiling Point/Range (°C):           186-189
pH:                                         Not available
Freezing Point/Range (°C):         -59


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