Sodium metatungstate is a new component in the production of heavy solutions. It brings a number of advantages with it when compared to zinc - chloride solutions or highly toxic halogenous hydrocarbons used in sink or swim analysis.
formula : na6[h2w12o40] or 3na2wo4 . 9wo3 . xh2o
cas name : tungstate (w12 (oh) 20386-), hexasodium, hydrate
mol. Weight : 2968. 12
appearance : white crystals or light yellow-green transparent solution.
properties : very easily soluble in water, ph-neutral solution, maximum possible density of solution : 3,1 g/cm3 at 25? ? C.