H2O2
Physical Properties
1. Equivalent values of
concentration
Volume strength (or volume percent) is an outdated term
referring to the volume of oxygen gas liberated from one volume of H2O2
solution (at 0oC and 1 atm.).
Mole fraction calculated from:
|
WMw |
Xh = |
---------------------------- |
|
Mh (100 – W) + WMw |
Where:
Mw = molecular weight of water (18.016)
Mh = molecular weight of H2O2 (34.016)
W = weight % of H2O2
Xh = mole fraction of H2O2 |
2. Density of H2O2
solutions
Ref: M.F. Easton, A.G. Mitchell, W.F.K.
Wynne-Jones. Trans. Faraday Soc. 48:796 (1952)
3. Density of H2O2
vapor
Ideal gas law holds for ordinary temperatures and
pressures, using the average molecular weights for mixtures of H2O2
and water.
4. Coefficient of cubical expansion
To calculate the specific volume (Vt2) at
temperature t2, from known values of specific volume at some base temperature
(Vt1) using a given set of coefficients of expansion (B)
Vt2 = Vt1[1 +
B(t2 – t1)] where B = Coefficient of cubical expansion
Ref: W.C. Schumb, C.N. Satterfield, R.L.
Wentworth. "Hydrogen Peroxide", ACS Monograph, Reinhold Publishing Corp.,
New York (1955), pg. 757.
Notes:
1. The expansion coefficient is greater than that of water.
2. H2O2 solutions < 45 wt.% expand during freezing, while those
> 65% contract
5. Partial molal
volumes
6. Viscosity of H2O2
solutions
Ref: M.K. Phibbs and P.A. Giguere. Can. J.
Chem., 29:173 (1951).
7. Viscosity of H2O2
vapors
Viscosity of H2O2 – water vapor
mixtures is a linear function of vapor concentration:
m V = 134 + 0.35 (t – 100) – 14yh where: t = 100
– 300 deg-C
Ref: C.N. Satterfield, R.L.
Wentworth, and S.T. Demetriades. J. Amer. Chem. Soc. 76:2623-2637 (1954).
8. Surface tension of H2O2
solutions
Ref: M.K. Phibbs and P.A. Giguere. Can. J.
Chem., 29:173 (1951).
9. Coefficient of diffusion
For H2O2 vapors: Coefficient of Diffusion = 0.189 cm2/sec
(in air, 60 deg-C, 1 atm)
10. Boiling points and freezing
points
Ref: G. Scatchard, G.M. kavanagh, L.B. Ticknor. J.
Amer. Chem. Soc. 74:3715-3720 (1952)
11. Solid-liquid phase diagram
Ref: P.A. Giguere. "Complements au Nouveau
Traite de Chimie Minerale – No. 4 – Peroxyde d’Hydrogene et Polyoxydes
d’Hydrogene" Paris,
Masson 1975 (181 p).
12. Heat of fusion
87.84 cal/gm = 2987 cal/mole = 367.64 kJ/kg
(at melting point)
Ref: P.A. Giguere, I.D. Liu, J.S.
Dugdale, J.A. Morrison. Can J. Chem. 32:117-128 (1954).
13. Vapor pressures
Ref: J.J. Van Laar. Z. Physik. Chem.
72:723 (1910).
14. Equilibrium vapor –
liquid concentrations
Ref: J.J. Van Laar. Z. Physik. Chem.
72:723 (1910).
15. Activity coefficients
16. Heat of vaporization
D Hv = 0.021066 T2 – 25.817 T + 18412
Ref: P.A. Giguere. "Complements
au Nouveau Traite de Chimie Minerale – No. 4 – Peroxyde d’Hydrogene et
Ployoxydes d’Hydrogene" Paris,
Masson 1975 (181 p).
17. Thermal conductivity of liquid
H2O2 conc. |
(k x 103) at 25 oC |
0 %
30-90 % |
1.44 cal. cm-1.s-1.
oC-1
1.28 – 1.36 cal. cm-1.s-1. oC-1 |
Ref: Solvay-Interox. "Hydrogen
Peroxide – Data Manual", p. 16.
18. Thermal conductivity of vapor
Ref: R.A. Svehla. NASA Tech. Rpt. R-132,
Springfield, 1962 (120 p).
19. Heat capacity of liquid
Ref: M. Kroutil and M. Vender. Chem. Prumysl.,
14:412-415 (1956).
20. Heat capacity of vapor
Ref: R.A. Svehla. NASA Tech. Rpt. R-132,
Springfield, 1962 (120 p).
