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Physical data for sodium carboxymethyl cellulose

- Aug 21, 2014 -

1 sodium carboxymethyl cellulose traits: white or yellowish powder or granular, fibrous material. Odorless, tasteless, non-toxic, easy to wet, is anionic cellulose ether.
2 Density (g / mL, 25 ℃): 1.6
3 Melting Point (oC): 274
4.pH:1% pH aqueous solution of 6.5 to 8.5, when pH> 10 or 5:00, mucilage viscosity decreased significantly <, at pH = 7 for optimal performance.
5 Thermal Stability: The thermal stability, a rapid increase in viscosity at below 20 ℃, 45 ℃ temporal change is slow, prolonged heating above 80 ℃ variability can make the viscosity and gel properties significantly decreased.
6 refractive index: 1.51
7 Solubility: soluble in water into a high viscosity solution, insoluble in a variety of solvents such as ethanol. Very stable in alkaline solution, the case is easy to acid hydrolysis, PH value will precipitate 2-3, the case will be a polyvalent metal salt precipitation reactions.

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