Product
Carboxymethyl Cellulose
Carboxymethyl Cellulose (CMC) is a water-soluble cellulose polymer used in drilling fluids for fluid-loss control (LV grade) and viscosity (HV grade).
- Also known as
- CMC
- Grades / forms
- LV & HV · Technical grades · Food grade
Overview
CMC is made by reacting purified cellulose with monochloroacetic acid, giving a water-soluble anionic polymer. Its molecular size decides its job. Low-viscosity (LV) CMC reduces fluid loss — it plugs the filter cake and keeps water from invading the formation — without thickening the mud. High-viscosity (HV) CMC builds viscosity and suspends cuttings as well as controlling fluid loss.
CMC performs best in fresh to moderately saline muds. In high-salinity or high-hardness systems, polyanionic cellulose (PAC-R and PAC-LV), a more highly substituted relative, holds its performance better. Beyond drilling, technical CMC is used as an anti-redeposition agent in detergents and as a thickener in textile printing, paper coating and ceramics.
Applications
- 1Fluid-loss control in water-based drilling mud (LV)
- 2Viscosity and cuttings suspension in drilling mud (HV)
- 3Workover and completion fluids
- 4Anti-redeposition agent in laundry detergents
- 5Thickener for textile printing pastes and paper coatings
Packing & storage
Packing
- 25 kg multi-wall paper bags
- Jumbo bags on request
Storage & handling
Store dry and sealed. CMC is hygroscopic and forms lumps if exposed to humidity.
Enquire
Get a price for Carboxymethyl Cellulose
Send grade, quantity and destination port. Price, lead time and documents come back within one business day.
Request a quotation or call +91 97979 77958- Certificate of Analysis with every batch
- SDS in destination format
- Made to your specification
- Private label packing
Questions
Carboxymethyl Cellulose, answered.
CMC LV (low viscosity) controls fluid loss without significantly raising mud viscosity, so it suits weighted muds. CMC HV (high viscosity) both controls fluid loss and builds viscosity to carry cuttings, so it suits unweighted and low-solids muds.
In high-salinity, high-hardness or seawater-based muds, standard CMC loses effectiveness. Polyanionic cellulose (PAC-R and PAC-LV) has a higher degree of substitution and stays effective in those conditions.
CMC is generally effective up to about 120–150 °C bottom-hole temperature. Above that it begins to degrade, and synthetic polymers are used for fluid-loss control instead.
Yes. Cosmo Chemistry manufactures and exports Carboxymethyl Cellulose from Surat, Gujarat, India to more than 55 countries, for customers in the mining & oil drilling, basic industrial chemicals and food ingredients industries. Send your grade, quantity and destination port for a quotation within one business day.
Every shipment of Carboxymethyl Cellulose from Cosmo Chemistry includes a batch-specific Certificate of Analysis (COA) and Safety Data Sheet (SDS). Certificate of Origin, third-party pre-shipment inspection and destination-specific regulatory documentation are arranged on request.
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