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Propylene glycol


Propylene glycol USP/EP: Pharmaceutical grade

Propylene glycol is a light, transparent liquid, almost odorless and with low volatility. It is completely soluble in water and in most organic solvents. In addition, all propylene glycols have a great capacity to hold and dissolve active ingredients equally which allows them to serve as carriers of aromas, flavours, dyes and moisture.
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Propylene glycols, thanks to their excellent properties and quality, are present in areas as varied as personal care, cosmetics, food and pharmaceuticals. Its use must follow strict specifications for quality as laid out in the USP- United States Pharmacopeia and EP-European Pharmacopoeia.
The products from Repsol’s Chemicals Division are present in every day articles used to improve people’s quality of life, providing safety and reliability for health and therapy.
Repsol offers:
  • High quality products
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  • Technical service and development
Repsol manufactures propylene glycols USP/EP (Pharmaceutical grade), with a strict monitoring of quality and safe handling, from production to delivery, to offer you a high standard quality product according to Pharmacopoeias (USA; UE).
Repsol Chemicals' production and sales comply with:
  • the sector's Good Manufacturing Practices (GMP).
  • Guides for Pharmaceutical Excipients by the Joint International Pharmaceutical Excipients Council (IPEC).
  • Guidelines for Handling and Distribution of Propylene Glycol USP/EP, which have been prepared by the European manufacturers, under the direction of the Propylene Oxide/Propylene Glycols Sector Group, following the Responsible Care® program for the handling and distribution of their products.
Our propylene glycol USP/EP (pharmaceutical grade) is qualified and approved for use as an excipient in pharmaceutical applications, as it acts as a solvent and extractant for a wide range of active ingredients besides its dispersant capacity that provides equal distribution of the medicine ingredient in the formulation.
Its wide range of applications includes medicines, local anaesthetics, vitamins and hormones, antiseptics, and vaccines.

Propylene glycol USP/EP for food

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Propylene glycol USP/EP (pharmaceutical grade) is the only grade appropriate for application in food.
As propylene glycol USP/EP is colour-, taste- and odorless, it has become the perfect carrier of flavours of a wide variety of food commonly used in our day a day.
Propylene glycol USP/EP (pharmaceutical grade) is approved for use as a food additive under E-number E 1520 (with strict maximum limit of 1 g/kg in human foodstuffs). Direct food contact uses include: 
  • Carrier of colorants, emulsifiers and antioxidants with a maximum allowed level of 1000 mg/kg in the final food.
  • Carrier in food enzymes with a maximum permitted level of 500 g/kg of enzymes.
  • Carrier of food aromas.
  • Carrier of nutrients with a maximum allowed level of 1000 mg/kg in the final food.
Propylene glycol USP/EP (pharmaceutical grade) is also used in animal feed because of its inherent property of attracting water, helping to keep the feedstuffs moist, fresh and chewy, making them easier to digest for our dogs and also for livestock.
In 2010, propylene glycol was reclassified as an animal feed material according to EU Regulation 767/2009/EC, repealing the previous list as a feed additive with the number E-490.
Applications of propylene glycol USP/EP as feed ingredient include its use as:
  • Humectant to provide moisture and taste.
  • Solvent, stabilizer and preservative to keep the feed suitable for longer use.
  • Additive for increased energy provision.

Propylene glycol for cosmetic and personal care

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The products from Repsol’s Chemicals Division are used to manufacture everyday articles which improve people’s quality of life, wellbeing and safety.
MPG Monopropylene glycol USP/EP is widely used in creams for their excellent properties:
  • It keeps moisture in creams.
  • Provides lipstick with its consistent texture.
  • Preserves the homogeneous constituency of body lotions.
  • Ensures that shampoos foam nicely.
Glycols are present in a large number of applications: Deodorants, nail polish, soaps, shaving products, and oral hygiene, among others.
DPG PER Dipropylene glycol is widely used in personal care products as fragrances for its contributions to perfumes.

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