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  • Propylene Glycol

Product Overview

Propylene Glycol (PG) USP/EP is a pharmaceutical grade of Monopropylene Glycols (PG or MPG) with a specified purity greater than 99.8%.

PG USP/EP is tested for compliance with specifications of:

  • United States Pharmacopeia (USP)
  • European Pharmacopoeia (EP)
  • Japanese Pharmacopoeia (JP)
  • Food Chemical Codex (FCC)

It also complies with:

  • Brazilian Pharmacopoeia (FB)
  • other pharmaceutical, cosmetic and food regulations in the global markets where it is sold

It is listed by the Personal Care Products Council† as an approved ingredient in cosmetics, and its use is reviewed by the Cosmetic Ingredient Review (CIR). PG USP/EP is Kosher and complies with Halal requirements.

PG USP/EP is an important ingredient for a multitude of uses, including:

  • Solvent for aromatics in the flavor-concentrate industry
  • Wetting agent for natural gums
  • Ingredient in the compounding of citrus and other emulsified flavors
  • Solvent in elixirs and pharmaceutical preparations
  • Solvent and coupling agent in the formulation of sun screen, lotion, shampoos, shaving creams and other similar products
  • Emulsifier in cosmetic and pharmaceutical creams
  • Ingredient for low-temperature heat-transfer fluids involving indirect food contact, such as brewing and dairy uses, as well as refrigerated grocery display cases
  • Very effective humectant, preservative and stabilizer in semi-moist pet food (with the exception of cat food), bakery goods, food flavorings and salad dressings


Heat Transfer Fluids
Fragrance, Cosmetics and Personal Care
Food and Flavorings
Pet Food/Animal Feed
Other Applications


Propylene Glycol USP/EP is available from Dow in various quantities. Please contact us for details on availabilities in your region.

Physical Properties*

Physical Properties Units Propylene Glycol USP/EP (PG USP/EP)
Chemical Name 1,2-propanediol
Formula C3H8O2
CAS Number1 57-55-6
EINECS Number 200-338-0
Molecular Weight 76.1
Boiling Point 760 mm Hg, °F 369.3
760 mm Hg, °C 187.4
Vapor Pressure mm Hg, 77°F (25°C) 0.13
Evaporation Rate (n-Butyl Acetate = 1) 1.57E-02

1 Chemical Abstract Service Number
*Note: These properties are laboratory results on pure compounds or are typical of the product. Typical properties should not be confused with, or regarded as, specifications.

Technical Literature

pdf icon Propylene Glycol USP/EP Purity Plus: Application of Good Manufacturing Practice (GMP) (46KB PDF)
pdf icon Propylene Glycol USP/EP Application Overview: Pharmaceutical Industry (66KB PDF)
pdf icon Propylene Glycol USP/EP Application Overview: Food Industry (78KB PDF)
pdf icon Propylene Glycol USP/EP Application Overview: Cosmetics and Personal Care Industry (64KB PDF)
pdf icon Propylene Glycol USP/EP Application Overview: Animal Feeds (117MB PDF)
pdf icon Questionnaire Response Document; PG USP/EP Current Good Manufacturing Process (400KB PDF)
Safety Data Sheets
Sales Specifications
Technical Datasheets
pdf icon
Propylene Glycol USP/EP
English (115KB PDF) Español (153KB PDF) Português (146KB PDF) Français (138KB PDF) Italiano (32KB PDF) Deutsch (138KB PDF)

Find a Distributor, or Contact Us for specific product and application support.

DOW PuraGuard™: Your Security for Purity (3:34)

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