density of solid D2O (deuterium oxide) or "heavy ice"

[Steve L]

Does anyone know the density of solid deuterium oxide? I have found
several references with conflicting reports:

55th and 60th editions of CRC say that the density is 1.105 g/cc at
0 Celsius, at which point D2O is solid. (D2O freezes at 3.8 Celsius
under atmospheric pressure). However, the 75th edition (which is
sitting on my shelf) lists the density of D2O down to only 3.8
Celsius,
the freezing point...I'm assuming that the table is only for liquid
values.

On the sci.physics.research newsgroup, one person found the density of
solid D2O to be 1.017 g/cc (see reference 2 below). I was also told
that since the molecular structure of solid D2O is very similar to
solid H2O, the ratio of soild to liquid densities should be similar as
well. This seems to make sense to me, but my CRC references are
confusing
me, and I'm wondering if the CRC references were wrong and they
corrected
that for the 75th edition.

I hope that someone has a good answer for me. Does someone have
another reference?...preferrably recent. Has someone observed the
density change
in person?

****************************************

Notes and references:

1. I obtained the 55th edition CRC reference from a newsgroup posting
(http://groups.google.com/groups?q=%22deuterium+oxide%22+density+solid&hl=en&lr=&ie=UTF-8&selm=192%40cpro.UUCP&rnum=1)

2. The newsgroup reference with the lower density was found at the
following link
http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=av4mch%24eac%241%40ra.nrl.navy.mil

Apparently this calculation derived from the following reference
(found earlier in the thread):

J. F. Coetzee and C. D. Ritchie, Editors, "Solute-Solvent
Interactions", Vol. 1, M. Dekker, Inc. 1969, Chapters 6 (by E. M.
Arnett) and 7 (by Laughton and Robertson).

[Uncle Al]

Steve L wrote:
>
> Does anyone know the density of solid deuterium oxide? I have found
> several references with conflicting reports:
>
> 55th and 60th editions of CRC say that the density is 1.105 g/cc at
> 0 Celsius, at which point D2O is solid. (D2O freezes at 3.8 Celsius
> under atmospheric pressure). However, the 75th edition (which is
> sitting on my shelf) lists the density of D2O down to only 3.8
> Celsius,
> the freezing point...I'm assuming that the table is only for liquid
> values.
>
> On the sci.physics.research newsgroup, one person found the density of
> solid D2O to be 1.017 g/cc (see reference 2 below). I was also told
> that since the molecular structure of solid D2O is very similar to
> solid H2O, the ratio of soild to liquid densities should be similar as
> well. This seems to make sense to me, but my CRC references are
> confusing
> me, and I'm wondering if the CRC references were wrong and they
> corrected
> that for the 75th edition.
>
> I hope that someone has a good answer for me. Does someone have
> another reference?...preferrably recent. Has someone observed the
> density change
> in person?

[snip]

D2O/H2O ices' unit cell volumes are 1.0015445. Ice density *ratio* is
the molecular weight ratio times inverse that or 1.110 (D2O ice sinks
in water). Note the *individual* densities, below. Real world solids
have defects and generally slightly lower density than the x-ray
crystal density. (For these unit cells, a=b, c. The ratio removes
alpha,beta,gamma scale factors).

Property H2O D2O
----------------------------------------------------
MW 18.015268 20.027508 g/mol
Mp 0.00 3.82 C
Bp 100.00 101.42 C
Triple Pt. 0.01 3.82 C
0.99978 1.1055 g/cm^3
611.657 661 Pa
Critical Pt. 647.096 643.847 K
22.064 21.671 MPa
0.322 0.356 g/cm^3
Max. density 3.984 11.185 C
0.99972 1.1053 g/cm^3
Ice density at mp 0.9168 1.0175 g/cm^3
d/25 C 0.99701, 1.1044 g/cm^3
Cp/25C 17.99 20.16 cal/deg-mole
Cv/25C 17.80 20.0 cal/deg/mole
Vp/25 C 23.75 20.51 torr
Molar Volumes
Solid at Mp 19.65 19.679 cm^3/mole
Liquid at Mp 18.018 18.118 cm^3/mole
Liquid at 25 C 18.069 18.134 cm^3/mole
Crystallographic/0 C
a 4.5228 4.5258 A
c 7.3673 7.3689 A
c/a 1.629 1.628
epsilon/25 C, 78.304 77.937;
Viscosity/25 C 0.8909 1.1095 cP
Vibrational fundamentals
nu1 3657.05 2671.69 cm^(-1)
nu2 1594.59 1178.33 cm^(-1)
nu3 3755.79 2788.02 cm^(-1)
pKw/25 C 13.9991 14.87

http://www.lsbu.ac.uk/water/data.html
<http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA2/MAIN/ICECUBE/CD2R1.HTM>
<http://chemed.chem.purdue.edu/demos/moviesheets/1.1.html>

--
Uncle Al
http://www.mazepath.com/uncleal/qz.pdf
http://www.mazepath.com/uncleal/eotvos.htm
(Do something naughty to physics)