Propylene Glycol / MPG / PG - 40% v/v solution

  • SKU:
  • Barcode:
Available sizes
SizePrice ex VATPrice inc VAT

Sold Out

MonoPropylene Glycol

40% v/v Solution (Uninhibited)

Cooling Liquid

Propylene glycol 40% solution is a non toxic liquid that is practically colourless, odourless, and tasteless. It is used in chillers, glycol systems, boiler systems, vehicles, solar panels, and many other water systems that require freeze protection or improved heat transfer.
MPG is widely used as a non toxic anti-freeze, de-icer, heat transfer fluid, a component in hydraulic fluids, and in paints and surface coating industries. PG has many special features and benefits including, low freezing point, low flammability, low toxicity, biodegradability, low corrosive nature to metals making it an excellent substitute for ethylene glycol.


  • Chemical Names: 40% propylene glycol + 60% water
  • CAS NO: 57-55-6
  • Description: Liquid at room temperature, colourless and odourless.
  • Specific gravity: 1.02
  • Freezing Point: -20°C


General Uses for pure Propylene Glycol:

  • Making Diffuser oils (see below for details)
  • For use in solar boilers / heaters as a heat transfer fluid.
  • Non-toxic antifreeze and coolant for engines.
  • Substitute for ethylene glycol and glycerol.
  • A lubricant and antifreeze for hydraulic and brake systems.
  • Monopropylene Glycol is used in the manufacture of synthetic alkyd resins found in paints, enamels and varnishes.
  • Propylene glycol is used in making polyester compounds and as a solvent in the paint and plastics industries.
  • As a solvent for dyes, resins and inks used in high speed printing presses. 
  • It is used to create artificial smoke or fog for theatrical uses.
  • To regulate humidity in a cigar humidor.
  • As a carrier for fragrance oils.
  • As a coolant in liquid cooling systems.
  • MPG is used as a coolant in ice skating rinks.
  • Dehydrating fluid for use in the natural gas processing industry. 
  • In the manufacture of paintballs.
  • As a solvent in photographic chemicals like film developers.

PLEASE NOTE: This product is not for human or animal consumption.



    Propylene glycol is a component in newer automotive antifreezes and de-icers used at airports. Like ethylene glycol (MEG), the freezing point of propylene glycol is depressed when mixed with water due to disruption of hydrogen bonding. Unlike ethylene glycol, propylene glycol is much lower in toxicity. It is readily biodegradable.

    Freezing Points of Propylene Glycol / Water Mixtures Percent

    Propylene Glycol (wt. %) Freezing Point (F) Freezing Point (C)
    0 32 0
    10 26 -3
    20 20 -7
    30 10 -12
    36 0 -18
    40 -5 -20
    43 -10 -23
    48 -20 -29
    52 -30 -34
    55 -40 -40
    58 -50 -46
    60 -60 -51


    Health & safety

    Not a hazardous substance or mixture according to EC-directives 67/548/EEC or 1999/45/EC.


    Click here for MSDS

    Click here to view sales specification sheet




    Buy PG Propylene glycol GRG

    Buy PG Propylene Glycol Premium Grade

    Buy DPG Dipropylene Glycol