Carboxymethyl Starch (also sodium carboxymethyl starch or CMS) is a kind of natural starch derivative which is used primarily as a modified filtration control agent for drilling mud, completion, drill-in and workover fluids. CMS can dissolve in water under room temperature and form a colorless, viscous and transparent liquid, but free from toxicity and corruption. As CMS is slightly anionic, it not only has a good thermal stability and good resistance of salt and calcium, but also does not increase fluid viscosity. Carboxymethyl Starch is similar to oil drilling cmc (carboxymethylcellulose) in manufacturing process and applications. Bichain is one of reliable carboxymethyl starch suppliers and manufacturers of sodium carboxymethyl starch, carboxymethyl starch sodium and CMS for oil and gas drilling. High quality like Impermex.

Technical Data:

Normal dosage is 0.3-0.5 percentages. 

25kg, 50kg, 50bl/bag or according to customer’s requirement.

Avoid high-intensity extreme pressure and prolonged exposure to strong sunlight. Keep bag closed. Keep away from heat, sparks and flames.