Tech grade analysis itemsTechnical 1Technical 2 Measuring methodCaCL2 %≥74.0-77.090.0-95.0HG/T2327-2004 Magnesium and alkali metal chlorides(nacl)%53HG/T2327-2004water insoluble matter%≤0.50.5HG/T2327-2004alkalinity(Ca(OH)2)%≤ 0.350.35HG/T2327-2004sulphate (CaSO4)%≤0.10.1HG/T2327-2004PH value8-108-10HG/T2327-2004Food grade analysis itemsTechnical 1Technical 2 Measuring method CaCL2 %≥72-7788-90HG/T2327-2004Magnesium and alkali metal chlorides(nacl)%4.85.5spectrophotometrywater insoluble matter%≤0.10.1spectrophotometry Ph value %≤passpass HG/T2327-2004alkalinity %≤0.350.35spectrophotometry arsen %≤0.00030.0003spectrophotometry Heavy metals (Pb)%≤0.0010.001spectrophotometry Use 1.Melting snow and melting ice for road, sports ground, 2.Control dust 3.producing beton