Views:3 Author:Site Editor Publish Time: 2019-11-21 Origin:Site
Sodium carboxymethyl cellulose (CMC) is a cellulose derivative, an ionic cellulose gum, and owing to its unique thickening, suspending, adhesion, and water retention properties, is widely used in various industrial fields.
CMC has the functions of thickening, suspending, emulsifying, stabilizing, shaping, filming, bulking, anti-corrosion, retaining freshness, acid-resisting, health protecting, etc. It can replace the application of guar gum, gelatin, agar, sodium alginate, and pectin. It is widely used in modern food industry, such as frozen food, solid drink, fruit juice, jam, lactic acid drinks, condiment, biscuit, instant noodles, bakery products, meat products, etc.
Sodium carboxymethyl cellulose is generally divided into 3 grades depending on the purity: the food high-purity grade (with a content more than 99.5%), the industrial grade (with a content more than 90%), and crude products (with a content more than 65%). According to the viscosity (molecular weight), there are 3 types: high viscosity (with the 1% solution viscosity of 5000-8500 Pa·S), medium viscosity (with the 1% solution viscosity of 1000-5000 Pa·S), and low viscosity (with the 1% solution viscosity of 5-1000 Pa·S). Therefore, Sodium carboxymethyl cellulose has many varieties suitable for requirements of various applications.
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3. What are the dissolution methods of hydroxypropyl methylcellulose (HPMC)?——Answer: Hot water dissolution method: Since HPMC does not dissolve in hot water, HPMC can be uniformly dispersed in hot water at the initial stage, and then quickly dissolve during cooling. Two typical methods are describe
Industrial-grade hydroxypropyl methyl cellulose used in mortar is distinguished by viscosity. Generally, the following types are commonly used Low viscosity: 400 is mainly used for self-leveling mortar. Reason: low viscosity, good leveling, high mortar density. Medium and low viscosity: 20000-400000