Accession Number:

ADA429202

Title:

Enthalpy of VX Hydrolysis in Aqueous Sodium Hydroxide Solution at 90 degrees C

Descriptive Note:

Final rept. May-Jul 2003

Corporate Author:

EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD RESEARCH AND TECHNOLOGY DIR

Personal Author(s):

• Bartram, Philip W.
• Harrison, Elaina H.
• Lindsay, Robert S.
• Procell, Suzanne A.
• Matthews, Robin L.

Report Date:

2004-10-01

Pagination or Media Count:

15.0

Abstract:

The enthalpy, or heat of reaction, for the hydrolysis of munitions grade VX in aqueous sodium hydroxide at 90 degrees C was determined in a 2-L Mettler RC1 Reaction Calorimeter. Typically, VX with dicyclohexylcarbodiimide DCCDI as a stabilizer was added to the sodium hydroxide solution in the reactor at 11.35 gmin. The average normalized enthalpy for nine reactions was -139.6 kJ SN-1 4.2mol VX. The overall heat transfer coefficient of the final reaction mass was 178.3 Wm2 degrees K SN-1 7.7, and the specific heat capacity was 3.6 kJkg K SN-1 0.2. The thermodynamic quantities were not significantly different than previous reported data.

Descriptors:

• *HYDROLYSIS
• *ENTHALPY
• *VX AGENT
• *SODIUM HYDROXIDE
• NEUTRALIZATION
• DEMILITARIZATION
• HEAT TRANSFER COEFFICIENTS
• ACETIC ANHYDRIDE
• CALORIMETERS
• HEAT OF REACTION

Subject Categories:

• Thermodynamics
• Inorganic Chemistry
• Physical Chemistry
• Chemical, Biological and Radiological Warfare

Distribution Statement:

APPROVED FOR PUBLIC RELEASE