... slowly when exposd to moist air. Specification:80 meshNaHCO3 99.0 to 100.5% minLoss on drying 0.20 ... % maxPH Value(10g/l) Solution 8.6 maxAs 0.0001% maxPb 0.0005% maxAmmonium Salt ... 0.0001% max Uses: Used as food fermentation,detergent ingredient,carbondoxide foamer,pharmacy,leather,ore milling ... ,fiber and rubber industry, etc, sodium bicarbonate food grade 99.0-100.5%