... source, the packaging should be sealed, can't keep in touch with the air, should preserve with flammable, ... together with other things; carefully load and unload in order to prevent damaging the container and package.Uses ... strength agent, the antifreeze,etc. It is also used in pharmacy and chemical trade.Quality Index: Main Index NameBest ... dry basis),% ≤0.801.001.90 Sodium nitrite supplier food grade