Sodium Carboxymethylcellulose
Methylcellulose, carboxymethylcellulose, and hydroxymethylcellulose are forms of the familiar polysacharide cellulose, treated to make it more soluble in water. Cellulose is a long chain made of the sugar glucose.
The long chains mix with water to make a thick syrup or gel.
Methylcellulose is used as a thickener in sauces and salad dressings, and as a thickener and stabilizer in ice cream, where it helps prevent ice crystals from forming during freezing or re-freezing after a thaw.
carboxymethylcellulose: InChI=1/C6H12O6.C2H4O2/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)/f/h;3H