Part of the Hydrogen Peroxide Propulsion Guide
Transport Properties of Hydrogen Peroxide
All properties of propellant-grade solutions of H2
that involve the transfer of mass or energy at the molecular level are presented in the following paragraphs.
Experimental determinations of the viscosity of liquid H2
O solutions ranging in composition from 0 to 100 w/o H2
, have been reported in Ref. 1, Ref. 2, and Ref. 3. Curve fits of these data at 0, 20, 25, and 50 C (32, 68, 77, and 122 F) are graphically illustrated as a function of w/o H2
(from 50 to 100 w/o) in Fig. 2.18 and 2.18a. In addition, viscosity measurements have been conducted on 98 w/o H2
(Ref. 4) from 20 to 85 C (68 to 185 F) and on 90 w/o H2
(Ref.5) from 77 to 325 F (25 to 162.8 C). The data for 98 and 70 w/o H2
from the various sources has been plotted as a function of temperature and compared to the viscosity of water in Fig. 2.19 and 2.19a.
An equation representing these data from 100 to 300 C (212 to 540 F) with an estimated precision of ±2 percent is given as: μ (micropoises) = 134 + 0.35 [T(C)
- 100] -14 Y where Y = mole fraction H2
in vapor This equation, comparing the vapor viscosity of water with 100 w/o H2
, is graphically represented in Fig. 2.20.
Experimental measurements of the thermal conductivity of H2
O solutions have been limited to determinations (Ref. 3) on 98.2 w/o H2
at 0 C (32 F) and 25 C (77 F) and on 50 w/o H2
at 25 C; resulting thermal conductivities were 0.321, 0.339, and 0.347 Btu/hr-ft-F, respectively. Using the two experimental data points, the thermal conductivity of 98.2 w/o H2
was extrapolated to the critical point. This extrapolation, shown in Fig. 2.21, used H2
O as a reference substance and assumed no decomposition and a thermal conductivity of 0.100 Btu/hr-ft-F at the critical point.
Coefficient of Diffusion
The experimental determination of the diffusion coefficient of liquid H2
into water has been reported (Ref. 6) for 0.17 w/o H2
from 0 to 40 C (32 to 104 F) and for 0.019, 1.44, and 7.92 w/o H2
at 20 C (68 F). At 20 C (68 F), the diffusion coefficients were <1.2 cm2
/day for the concentrations studied. The diffusion coefficient of H2
vapor into air was experimentally determined in a vertical tube as 0.188 cm2
/sec at 60 C (140 F) and 1-atmosphere pressure. This can be compared to a diffusion coefficient of 0.320 cm2
/sec reported (Ref. 7) for water vapor under identical conditions.
The velocity of sound was experimentally measured (Ref. 8) in H2
O solutions from 3.5 to 33.5 C (38.3 to 92.3 F). These data are plotted for propellant-grade H2
solutions in Fig. 2.22 and 2.22a.
- Maass, O. and W. H. Hatcher, "Properties of Pure Hydrogen Peroxide. III" J. Am. Chem. Soc., 44, 2472-80 (1922)
- Phibbs, M. K. and P. A. Giguere, "Hydrogen Peroxide and Its Analogues. 1. Density, Refractive Index, Viscocity, and Surface Tension of Deuterium Peroxide-Deuterium Oxide Solutions," Can. J. Chem., 29, 173-31 (1951)
- Bulletin No. 07, Hydrogen Peroxide Physical Properties Data Book, FMC Corporation, Buffalo, New York, 1955.
- AFRPL-TR-66-6, Final Report, Advanced Propellant Staged Combustion Feasibility Program, Phase I, Part 2, Aerojet-General Corporation, Sacramento, California, April 1966.
- R-2094P, Summary Report, Research Program on H2O2, Rocketdyne, a Division of North American Aviation, Inc. Canoga Park, California, 1 March 1960.
- Stern, K. G. Berichte, 66, 547 (1933)
- Montgomery, R. B. J. Meteorology, 4, 193 (1947)
- Pajousek, D. "Intermolecular Interaction in Liquids. I. Adiabatic Compressibility and Structure in the System Hydrogen Peroxide," Chem. listy, 59, 1781-6 (1957).
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