RT null
T1 Barium - Health and Safety Guide 46
A1 United Nations Environment Programme, 
A1 World Health Organization, 
A1 International Labour Organisation, 
K1 health
K1 chemical
K1 health hazard
K1 waste disposal
SN 92 4 151046 3
YR 1991
FD 1991
LK https://wedocs.unep.org/handle/20.500.11822/29586
UL https://wedocs.unep.org/handle/20.500.11822/29586
NO Barium is an alkaline earth metal that occurs in nature in a combined form. It is present in rocks, minerals, soils, air, natural waters, and fossil fuels. Some barium salts (e.g., acetate, nitrate, and chloride) are quite soluble in water, whereas others (e.g., arsenate, carbonate, oxalate, chromate, fluoride, sulfate, and phosphate) are very poorly soluble. The water solubility of barium salts, except for barium sulfate, increases with decreasing pH.
DS UN Environment Document Repository
RD Sep 16, 2026