Calcium Propionate Quality index]ItemIndexItemIndexAppearancePowder or CrystalFluoride(F)% ≤0.003Content of propionicacld(in dry base)/% ≥99.0Moisture content/% ≤9.5Water insolubles/%≤0.30Free acidPassed by testingFree alkaliPassed testingHeavy metals(in Pb)/% ≤0.001As(in As2O3)/% ≤0.0004PH(1%solution)7-9