CMC appears to be white or light yellow powder, which is odorless and non-toxic. It is soluble in cold or hot water. When it solutes, some colloidal solution will appear, which is neutral or slightly alkaline. The important feature of CMC is that it can form colloid solution with high viscosity. Many factors influencing its viscosity are concentration, PH, temperature, substituted ratio and salts, etc. It has excellent performance in drilling of oil.Types and specificationficationDial reading at 600rpm, Fann 35 viscometerAPI-13A         Filtrate Loss mlDistilled water4% Salt waterSaturated waterCMC-LV90 max//10 max

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