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Transport Properties of Hydrogen Peroxide

hydrogen peroxide Propulsion

Part of the Hydrogen Peroxide Propulsion Guide

Transport Properties of Hydrogen Peroxide

All properties of propellant-grade solutions of H2O2 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 H2O2-H2O solutions ranging in composition from 0 to 100 w/o H2O2, 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 H2O2 (from 50 to 100 w/o) in Fig. 2.18 and 2.18a. In addition, viscosity measurements have been conducted on 98 w/o H2O2 (Ref. 4) from 20 to 85 C (68 to 185 F) and on 90 w/o H2O2 (Ref.5) from 77 to 325 F (25 to 162.8 C). The data for 98 and 70 w/o H2O2 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. Viscosity of Liquid Hydrogen Peroxide Water Solutions Viscosity of Liquid Hydrogen Peroxide Water Solutions Viscosities of 98 percent hydrogen peroxide Viscosities of 98 percent hydrogen peroxide 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 H2O2 in vapor This equation, comparing the vapor viscosity of water with 100 w/o H2O2, is graphically represented in Fig. 2.20. Viscosity of Hydrogen Peroxide and water vapor

Thermal Conductivity

Experimental measurements of the thermal conductivity of H2O2-H2O solutions have been limited to determinations (Ref. 3) on 98.2 w/o H2O2 at 0 C (32 F) and 25 C (77 F) and on 50 w/o H2O2 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 H2O2 was extrapolated to the critical point. This extrapolation, shown in Fig. 2.21, used H2O 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 H2O2 into water has been reported (Ref. 6) for 0.17 w/o H2O2 from 0 to 40 C (32 to 104 F) and for 0.019, 1.44, and 7.92 w/o H2O2 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 H2O2 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.

Sonic Velocity

The velocity of sound was experimentally measured (Ref. 8) in H2O2-H2O solutions from 3.5 to 33.5 C (38.3 to 92.3 F). These data are plotted for propellant-grade H2O2 solutions in Fig. 2.22 and 2.22a. Velocity of Sound in propellant grade hydrogen peroxide water solutoins Velocity of Sound in propellant grade hydrogen peroxide water solutoins


  1. Maass, O. and W. H. Hatcher, "Properties of Pure Hydrogen Peroxide. III" J. Am. Chem. Soc.44, 2472-80 (1922)
  2. 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)
  3. Bulletin No. 07, Hydrogen Peroxide Physical Properties Data Book, FMC Corporation, Buffalo, New York, 1955.
  4. AFRPL-TR-66-6, Final Report, Advanced Propellant Staged Combustion Feasibility Program, Phase I, Part 2, Aerojet-General Corporation, Sacramento, California, April 1966. 
  5. R-2094P, Summary Report, Research Program on H2O2, Rocketdyne, a Division of North American Aviation, Inc. Canoga Park, California, 1 March 1960.
  6. Stern, K. G. Berichte,  66, 547 (1933)
  7. Montgomery, R. B. J. Meteorology4, 193 (1947)
  8. Pajousek, D. "Intermolecular Interaction in Liquids. I. Adiabatic Compressibility and Structure in the System Hydrogen Peroxide," Chem. listy59, 1781-6 (1957).
Image cc Flickr via Kevin Dooley

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