Methyl cellulose is generally the abbreviation of sodium carboxymethyl cellulose, which belongs to a kind of polyanionic compound with good water solubility. Among them, methyl cellulose mainly includes methyl cellulose m450, modified methyl cellulose, food Grade methyl cellulose, hydroxymethyl cellulose, etc., are usually used in a wide range of industries, mainly used in construction, ceramics, food, batteries, papermaking, coatings, pharmaceuticals, mining, oil drilling and other industries. It is worth mentioning that in the field of cement, methylcellulose has an obvious retarding effect on mortar mixtures, which is also due to the relatively unique structure of methylcellulose.

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As a long-chain substituted cellulose, sodium carboxymethylcellulose itself has about 27%~32% of its hydroxyl groups in the form of methoxy groups, and the degree of polymerization of different grades of sodium carboxymethylcellulose is also different. The molecular weight mainly involved ranges from 10,000 to 220,000 Da, and the main degree of substitution is the average number of methoxy groups, which are different anhydroglucose units connected to the chain.

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Sodium carboxymethyl cellulose is currently widely used in some topical preparations, as well as cosmetics and food-grade methyl cellulose, which are generally non-toxic, non-sensitizing, and non-irritating. Methyl cellulose Su is a non-caloric material,