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Heating pack containing a granular chemical composition

  • US 3,980,070 A
  • Filed: 01/08/1975
  • Issued: 09/14/1976
  • Est. Priority Date: 01/08/1975
  • Status: Expired due to Term
First Claim
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1. In a heating pack comprising an outer bag and a removable inner bag for containing a particulate ferrous metal for producing an exothermic oxidation reaction in the presence of water, the improvement which comprises 6-8 parts by weight of an oxidizing mixture for use in combination with 100 parts by weight of said ferrous metal, said oxidizing mixture consisting essentially of:

  • 25-35% by weight of cupric carbonate;

    30-40% by weight of sodium chloride;

    20-30% by weight of citric acid; and

    7-10% by weight of potassium chlorate.

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