The Carboxymethyl cellulose, with the CAS registry number 9004-32-4, is also known as cellulose gum or CMC. It is a kind of polymer, and for detail, it 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.

Physical properties about Carboxymethyl cellulose are: (1)#H bond acceptors: 8; (2)#H bond donors: 6; (3)#Freely Rotating Bonds: 10; (4)mp: 274 °C (dec.); (5)density: 1,6 g/cm³

Preparation of Carboxymethyl cellulose: It can be prepared by the alkali-catalyzed reaction of cellulose with chloroacetic acid. Because of its polar (organic acid) carboxyl groups, it is soluble and chemically reactive.

Uses of Carboxymethyl cellulose: It is a kind of widely used polymer. It can be used in food science as a viscosity modifier or thickener, and to stabilize emulsions in various products. It is used in the oil drilling industry as an ingredient of drilling mud, where it acts as a viscosity modifier and water retention agent. It can also be used in ice packs to form a eutectic mixture resulting in a lower freezing point and therefore more cooling capacity than ice. What's more, insoluble microgranular carboxymethyl cellulose is used as a cation-exchange resin in ion-exchange chromatography for purification of proteins.When you are using this chemical, please be cautious about it: Avoid contact with skin and eyes.

You can still convert the following datas into molecular structure:
(1)InChI=1S/C6H12O6.C2H4O2.Na.H/c7-1-3(9)5(11)6(12)4(10)2-8;1-2(3)4;;/h1,3-6,8-12H,2H2;1H3,(H,3,4);; ;
(2)InChIKey=WCQWAJDGOJLSEQ-UHFFFAOYSA-N;
(3)SmilesO[C@@H]([C@@H](O)[C@@H](C=O)O)[C@@H](CO)O.C(C)(O)=O.[Na];

The toxicity data is as follows: