The Bttco Overseas Pvt. Ltd.
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Bentonite OCMA

Formula: Al2O3.4(SiO2).H2O

CAS: 1302-78-9

HS Code: 25081001

BENTONITE – OCMA is pure high swelling sodium based bentonite mined and processed in northwest part of Kutch, Gujarat, India. It offers superior performance than OCMA specification.
BENTONITE – OCMA contains more than 85% smectite, the active clay content as determined by colloid and x-ray diffraction.
BENTONITE – OCMA is used for superior performance in
  • Drilling Muds
  • Bore, Piling and Grouting
  • Soil sealant for impermeable barriers, for land, sanitary lands fills, hazardous waste sites and sewage lagoons
  • Diaphragm walls
  • Cement Bentonite Slurries.

Please Click here for Bentonite API 13A.


Bentonite OCMA

Typical performance of BENTONITE – OCMA when tested as per OCMA-DFCP-4 is as follows :

Properties Unit OCMA requirement Typical Specification of BTTCO's OCMA
Yield M3 / ton 16.0 min. 17.0-20.0
Fluid loss Ml 15.0 max. 12.5-14.5
Sand content % by wt. 2.5 max. 1.0-2.3
Dry mesh passing 100 mesh BSS % by wt. 98.0 min. 98.0-99.0
Moisture % by wt. 15.0 max. 10-14


BENTONITE OCMA does not contain any fermentable product and is environmentally acceptable.


25 kgs HDPE bags
50 kgs HDPE bags
1000 kgs Jumbo bags