polyanionic cellulose

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A cellulose derivative similar in structure, properties and usage in drilling fluids to carboxymethylcellulose. PAC is considered to be a premium product because it typically has a higher degree of carboxymethyl substitution and contains less residual NaCl than technical grade carboxymethylcellulose, although some PACs contain considerable NaCl.

Alternate Form: PAC

See: calcium carbonatecarboxymethylcellulosepotassium mud

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