Montmorillonit / Diosmectite EP standard with EP GMP, CP GMP

Product name: Diosmectite

CAS NO.1318-93-0

Gist:the second supplement of chinese pharmacopoeia, edition 2010

Characters: off hoary fine powder

Identification ---- silica gel test : positive

                        ---- Aluminate :positive

                        ----X-ray diffraction: complies

Tests-----PH : 7.7

          ---- Chloride: complies

          ---- Carbonate:complies

          ---- Water soluble salts:0.2%

          ---- Loss on drying:1.47%

          ---- Particle size:complies

          ---- Heavy metals:< 10ppm

          ---- Arsenic:< 2ppm

          ----Swelling power with water:2.7ml/g

          ----Adsorption strength : 0.51g/g

          ----Cristobalite and other impurities:Maximum height of cristobalite diffracton peak is 24% and that of other impurities is 46%

         ---- Microbial contaminant:complies

Assay

Al2O3: Calculated on dry basis 18.9%

SiO2: Calculated on dry basis 60.3%