Cellulose ethers numbering system

Figure 2 Carbohydrate and Ether Appendage Numbering System (a) 2,3,6-Tri-O-methylcellulose Repeat Unit, 2 (b) 2,3,6-Tri-O-allylcellulose Repeat Unit, 3 (c) 2,3,6-Tri-O-crotylcellulose Repeat Unit, 4 (d) 6-Phenyl-6-deoxy-2,3-di-0-methyl-cellulose Repeat Unit, 9...

Figure 8. Experimental data on the effect of (a) Taft s steric parameter for ethers and (b) modified Small s number for hydrocarbons on their reverse osmosis separations in systems involving dilute aqueous solutions and cellulose acetate membranes...

Methylcellulose occurs as a white, fibrous powder or granules. It is the methyl ether of cellulose. It is soluble in water and in a limited number of organic solvent systems. Aqueous solutions of Methylcellulose are surface active, form films upon drying, and undergo a reversible transformation from sol to gel upon heating and cooling, respectively. 

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