Li te premye pwodwi nan Almay nan 1918 e yo te akòde yon patant nan 1921. Depi lè sa a, te pwodiksyon komèsyal te reyalize nan Ewòp. Li te sèlman itilize kòm yon pwodwi bit ak itilize kòm yon koloidal ak yon lyan. Soti nan 1936 a 1941, aplikasyon endistriyèl la nan karboksimetil sodyòm karboksimetil te byen aktif, ak plizyè rive byen enspire yo te envante. Pandan Dezyèm Gè Mondyal la, Almay te itilize sodyòm karboksimethylcellulose pou sentèz detèjan yo. Hercules premye te fè sodyòm karboksimetil seluloz nan Etazini yo nan 1943 ak pwodwi rafine sodyòm karboksimetil seluloz nan 1946, ki te rekonèt kòm yon aditif manje ki an sekirite. Nan lane 1970 yo, Lachin te kòmanse adopte li, epi li te lajman itilize nan ane 1990 yo. Li se kalite ki pi lajman itilize ak pi itilize nan karboksimetil nan Toplus jodi a.
This product is the sodium salt of cellulose carboxymethyl ether. It is an anionic cellulose ether. It is a white or milky white fibrous powder or granule with a density of 0.5-0.7 g/cm3. It is almost odorless, tasteless and hygroscopic. It is easy to disperse in water to form a transparent colloidal solution, and is insoluble in an organic solvent such as ethanol. The pH of the 1% aqueous solution is 6.5-8.5. When the pH is >10 oswa<5, the viscosity of the gel is significantly lowered, and the performance is optimal at pH=7. For heat stability, the viscosity rises rapidly below 20 °C, and the temperature changes slowly at 45 °C. The long-term heating above 80 °C can denature the colloid and the viscosity and performance are significantly reduced. Soluble in water, the solution is transparent; it is very stable in alkaline solution, it is easy to be hydrolyzed when it is acid, and precipitation will occur when the pH is 2-3, and precipitation will occur in the case of polyvalent metal salts.
