Chitin CAS 1398-61-4 SQUID PEN CHITIN

Chitin

CAS 1398-61-4

Chitin is a kind of nitrogen-containing polysaccharide, also known as chitin, chitin, chitin, chitin, chitin, and cuticle. Chitin is the second most abundant biopolymer in nature, which is widely distributed. It is the important component of the shells of many lower animals, especially arthropods, such as shrimp, crab, insect, etc. the shells of shrimp contain about 15% - 30% and the shells of crab contain about 15% - 20%. It is also a component of cell membrane of lower plant fungi, lichen, green algae, yeast, jellyfish and squid. It is estimated that the annual biomass is more than 1 billion tons, which is a huge renewable resource. It is a 2-acetylglucosamine polymer with a white or yellowish transparent appearance. Its chemical structure is similar to that of natural cellulose. Besides hydroxyl, there are also acetylamino and amino functional groups in the molecule. There are many groups available for structural modification. It has more functional properties than cellulose and its derivatives. It is insoluble in water, ethanol, ether, salt, dilute acid and alkali; Soluble chitin, which is soluble in acetic acid and concentrated caustic soda solution, forms glassy colloid soluble chitin (also known as polyaminodextrose, chitosan, sugar solution chitin, chitosan, etc.), which can be used for: (1) purified water and ion exchange resin for extracting uranium from seawater; (2) packing and molecular sieve of gel column; (3) preparation of food packaging film or soluble food which can be degraded by biological or enzyme. (4) water retention agent for cultivating plants or microorganisms; (5) anti shrinkage and anti wrinkle treatment of textiles and fixation of direct dyes or sulfurized dyes.

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