Density of Ice at Different Temperatures
Name: Will G.
What is the density of ice at -5C, -10C, and -30C? I'm
writing a book on ice climbing, I cannot find any info on the
relationship of ice density and temperature. Ice pillars commonly fall
down after cold snaps, not warming temperatures as one might expect. Ice
climbers have learned to avoid pillars after the temperature drops, but
nobody can figure out what the problem is. If ice continues to expand as
temperature drops then why do the climbs fall down? If ice starts getting
denser as temperature drops then there is an explanation there I think,
but I want to know the facts before writing about this.
You can find the density of ice, as well as its thermal expansion
coefficient, and isothermal compressibility in the Chemical Rubber Company
(CRC) Handbook of Chemistry and Physics. Any library would have a copy. But
for info it is: 999.8425 , 999.259[-5], 998.120[-10], 996.286[-15],
993.550[-20], 989.588[-25], 983.857[-30]. Density units are kg/m^3 and
temperature in square brackets [t C.] in degrees Celsius.
The questioner wants to know the density of ice. The density values that
are quoted in the answer are for LIQUID water, not for ICE. Water can
exist as a liquid at temperatures below 0C in a supercooled state.
The CRC handbook of Chemistry and Physics does not give data on the density
of ice, but ice information can be obtained from the U. S. Coast Guard.
The density of ice at 0C is about 917 kg/m^3, and at -45C is about 920
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Update: June 2012