STUDIES OF SURFACE CHEMISTRY OF SOLIDS IN DISSEMINATION
Quarterly progress rept. no. 1, Aug-Oct 1967
MONSANTO RESEARCH CORP DAYTON OH DAYTON LAB
Pagination or Media Count:
The objectives of this program are 1 to develop quality-control tests for CS-2, which will insure that the product that is accepted will be reaerosolizable and 2 to study the surface chemistry of powders to determine which factors limit their dissemination by pneumatic and explosive means. Quality-control-type tests are being developed on CS powders for 1 reaerosolizability, 2 particle-size distribution, 3 density, 4 flowability, 5 hydrophobicity, and 6 sintering. Reproducible data on apparent density, bulk density, and fluid density have been collected for CS powders. Statistical analysis of previously existing data on density, particle size, funnel-flow rate, elutriation, and dissemination efficiency for both wet and dry samples do not show a strong correlation, except for the case of bulk density and funnel flow rate. This analysis is continuing as new data are becoming available from this program. Preparation of surface coatings to apply to powders to determine their effect upon dissemination efficiency and the mechanisms which limit it has been started. A pneumatic aerosol dissemination chamber is being installed to provide a facility for testing these coated powders.
- Physical Chemistry
- Chemical, Biological and Radiological Warfare