Synonyms: Montmorillonite  
Molecular Formula: Al2O3.4(SiO2). H2O
EINECS: 215-108-5  
Molecular weight: 360.31
CAS No: 1302-78-9

Bentonite that used in foundry, metallurgy, well drilling slurry, food, oil, agriculture, chemical industry, environmental protection, zoology construction, ecological construction, building, paper making, textile, printing & dyeing, ceramic, medicine, cosmetic, machine, etc.

Specification:
Description: Calcium based Bentonite
Major Function: Viscosity Agent
Testing specification: Per API spec 13A
600 rpm reading: 30 min
Yield Point / Plastic Viscosity ratio: 3 max
Filtrate volume, ml 15 max
Residue ( 75 micron wt % ): 4.0 max
Moisture, wt %: 10 max