Carboxymethyl cellulose is a synthetic material, which added to body and glaze for increase plasticity properties and strength. This material is completely removed during the firing process of the body and glaze and from view point of quality does not change on glaze surface. This substance dissolves quickly in cold and hot water, basically CMC to be used in cases that aim is control the viscosity, because does not form gel even in the presence of calcium ions. Carboxymethyl cellulose can be used in tile, sanitary porcelain industries as a binder and in glaze and engobe as a thickener. This material in the ceramic and tile industry is a stabilizer, preservative, absorbent of water, layer forming agent, the donor concentration and improvement agent for strength. This material improves covering ability of glaze and also improves the adhesion strength between glaze and ceramic. This matter is nontoxic, does not spoil in storage and does not have ash after firing. Carboxymethyl cellulose, depending on the type of product and production conditions, can have different deflocculant properties from low to high according to desired viscosity. CMCs with less degree of polymerization, have more defloculant properties.
APA Ceram group is one of the active companies in preparation and importation of carboxymethyl cellulose. It is noteworthy that all imported carboxymethyl cellulose products by this group, has the highest quality and standard with three viscosities; low, medium and high, respectively. Also there are possibility of check and quick dispatch imported material.