Vapor Hazard Index and Allowable Concentration Index : A Study on "Unmanageability" of Chemical Substances from the Industrial Hygienic Point of View
1966 Volume 8 Issue 6 Pages 317-327
Details
1966 Volume 8 Issue 6 Pages 317-327
Two indices for "unmanageability" of various substances used in working environments were defined from the hygienic point of view. The one in Vapor Hazard Index (VHI), which includes a volatility factor, and the other Allowable Concentration Index (ACI), which includes no volatility factors. The values of VHI and ACI were calculated for various substances, and some considerations were made for those calculated values. A discussion was done about the situations in which the application of VHI or ACI is reasonable respectively. Furthermore some problems to which we might encounter in the application of these indices were considered from the theoretical and the practical stand points. Last of all a critical discussion was made for the classification of solvents adopted in the Regulation for Preventing Organic Solvent Poisonings. (No.24, Labor Ministry Regulations, 1960)
