Does this look safe to use?
http://http://www.spectrumchemical.c...ct_id=5561538#
Of course they don't list bromine, but there isn't much room left for it if the stuff is 105% CaCl2
Assay (as CaCl2•2H2O) 99.0-105.0%
pH of a 5% Solution @ 25°C 4.5-8.5
Insoluble Matter 0.01%
Oxidizing Substances (as NO3) 0.003%
Sulfate (SO4) 0.01%
Ammonium (NH4) 0.005%
Barium (Ba) 0.005%
Heavy Metals (as Pb) 5 ppm
Iron (Fe) 0.001%
Magnesium (Mg) 0.005%
Potassium (K) 0.01%
Sodium (Na) 0.02%
Strontium (Sr) 0.1%
I know, it is way expensive unless you go for 50kg...