CAS number:  13717-00-5

Molecular formula: MgCO3 

ITEM        EXCELLENT               1ST CLASS           QUALIFIED

(Mgo),% ≥              41           40           38

(Cao),% ≤               0.43        0.7          1

(Non-soluble to hydrochloric acid),% ≤                0.1          0.15        0.2

(Moisture),% ≤       2             3             4

(SO4²-)% ≤            0.1          0.15        0.3

(CL-)% ≤ 0.1          0.15        0.3

(Fe),% ≤ 0.02        0.05        0.08

Mn),% ≤  0.004      0.004      ——

(loss on ignition),%               54~58     54~58     ≥ 52.0

(mesh residue):150μm ,% ≤75μm ,%  ≤          0.0251.0 0.03----   0.05----

(packing density),ml/g  ≤     0.12        0.14        ---

Usage:mainly used in rubber, insulation materials, plastic and pigment industrial and filling agent and reinforcing agent