What is the structure of carboxymethyl cellulose?

Carboxymethyl cellulose (CMC) or cellulose gum is a cellulose derivative with carboxymethyl groups (-CH2-COOH) bound to some of the hydroxyl groups of the glucopyranose monomers that make up the cellulose backbone.

What is sodium carboxymethyl cellulose used for?

Generic Name: carboxymethylcellulose sodium This medication is used to relieve dry, irritated eyes. Common causes for dry eyes include wind, sun, heating/air conditioning, computer use/reading, and certain medications.

What is sodium carboxymethylcellulose made from?

Sodium CMC is a water-soluble cellulose ether obtained by chemical modification from natural cellulose such as cotton linter or wood pulp.

How is sodium carboxymethyl cellulose prepared?

Preparation of Sodium Carboxymethyl Cellulose In alkalization step, 1 gram of cellulose powder of purun tikus was weighed and added to 20 ml of isopropanol with continuous stirring. Then, 4 mL of NaOH solution (5-25%; w/v) was added to the mixture while further stirring for an hour at room temperature.

Is sodium carboxymethyl cellulose?

Sodium carboxymethyl cellulose (NaCMC) is the sodium salt of carboxymethyl cellulose, an anionic derivative. It is widely used in oral, ophthalmic, injectable, and topical pharmaceutical formulations. For solid dosage forms, it is used primarily as a binder or matrix former.

What is the difference between carboxymethyl cellulose and methylcellulose?

The key difference between carboxymethyl cellulose and hydroxypropyl methylcellulose is that carboxymethyl cellulose has a lower water retention rate, whereas hydroxypropyl methylcellulose has a higher water retention rate when compared in same amounts.

What type of polymer is carboxymethyl cellulose?

Carboxymethyl cellulose (CMC) is an anionic water-soluble polymer obtained from cellulose.

Is CMC and MC the same?

As used in paper conservation, MC is soluble in cold water but not in hot water (either as the dry powder or as the dry film). CMC is soluble in either cold or hot water. Both, in an aqueous solution, can be diluted to some degree by organic solvents such as ethanol or acetone.