Freezing Mixtures

Temperature change with freezing mixtures

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With a freezing mixture of substances like salt and ice, a temperature below the freezing point of water can be achieved.

Freezing Mixture Temperature Change (oF) Temperature Change (oC)
From To From To
  • Ammonium Nitrate (NH4NO3) - 1 part
  • Water - 1 part
 50 3 10 -16
  • Calcium Chloride (CaCl2) - 3 parts
  • Snow or ice - 2 parts
 32 -27 0 -33
  • Potassium Hydrate (KOH) - 4 parts
  • Snow or ice - 3 parts
 32 -35 0 -37
  • Sal Ammoniac (NH4Cl) - 5 parts
  • Saltpeter (KNO3) - 5 parts
  • Water - 16 parts
 50 10 10 -12
  • Sal Ammoniac (NH4Cl) - 1 part
  • Saltpeter (KNO3) - 1 part
  • Water - 1 part
 46 -11 8 -24
  • Salt (NaCl) - 1 part
  • Snow or ice - 3 parts
 32 0 0 -18
  • Salt (NaCl) - 1 part
  • Snow or ice - 1part
 32 -0.4 0 -18

Ammonium Nitrate - Chrused Ice or Snow in Water

  • 1 part Ammonium Nitrate - 0.94 parts Ice/water : Temperature -4oC
  • 1 part Ammonium Nitrate - 1.20 parts Ice/water : Temperature -14oC
  • 1 part Ammonium Nitrate - 1.31 parts Ice/water : Temperature -17.5oC
  • 1 part Ammonium Nitrate - 3.61 parts Ice/water : Temperature -8oC

Calcium Chloride - Chrused Ice or Snow in Water

  • 1 part Calcium Chloride - 0.49 parts Ice/water : Temperature -20oC
  • 1 part Calcium Chloride - 0.61 parts Ice/water : Temperature -39oC
  • 1 part Calcium Chloride - 0.70 parts Ice/water : Temperature -55oC
  • 1 part Calcium Chloride - 1.23 parts Ice/water : Temperature -22oC
  • 1 part Calcium Chloride - 4.92 parts Ice/water : Temperature -4oC

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