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ANTIFREEZE & COOLANT

  • Composition: HOAT
  • Prevents Freezing Down to: -37°C
  • Prevents Boil Overs to: 129°C
  • Prevents Freeze Up to -37°C
  • Prevents Boil Overs to +129°C
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توضیحات

توضیحات

Ready to use anti-freeze, suitable for all makes and models of passenger vehicle, petrol or diesel, on the road today. Protects aluminium and all other engine metals for up to 5 years or 150,000 miles. Can be added to any colour anti-freeze.

  • Composition: HOAT
  • Prevents Freezing Down to: -37°C
  • Prevents Boil Overs to: 129°C
  • Prevents Freeze Up to -37°C
  • Prevents Boil Overs to +129°C

The effectiveness and the advantages and disadvantages of various substances and compounds that are used or offered in the market for use in the radiators of automotive vehicles as anti-freeze materials are discussed. These include alcohols, glycerine, salts, oils, sugars, and glycols.

Properties affecting the suitability of a material or compound, or solutions of them with water to afford protection against freezing at atmospheric temperatures that are likely to be encountered are their heat capacity, freezing-point, boiling-point, specific gravity, viscosity, volatility, solubility, tendency to decompose at the boiling-point, inflammability, corrosive action upon metals, tendency to attack rubber, general availability, and price.

The freezing-points of solutions of different materials vary widely at the same concentrations, or proportions to water, and also with variation of their concentration. Determinations of the freezing-points as made at the Bureau of Standards are given in charts. The freezing-points also vary with the specific gravity, and determinations of these points are given. Large differences exist in the initial viscosity of water, oils and aqueous solutions of glycerine, glycol and honey, and in the rate of increase of viscosity with decrease in temperature. Curves based on viscosity determinations for such liquids over a wide temperature range are shown.

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