Chitin / poly (acetylglucosamine) / cutin / chitosan/ β- 1,4-poly-n-acetyl-d-glucosamine

English Name: Chitin; Poly(N-acetyl-1,4- β- D-glucopyranosamine； Poly-(1→4)- β- D-N-acetylglucosamine 

Other names: Poly (acetylglucosamine); Brighten cutin; Chitosan; β- 1,4-poly-n-acetyl-d-glucosamine

CAS No.: 1398-61-4

(C8H13NO5)n=(203.19)n

Grade: br

Total nitrogen: 6.0 ~ 7.0%

Burning residue: ≤ 1.5%

Physicochemical properties: off white or light yellow flakes or strips or powder. It is the main component of the hard cutin and exoskeleton of insects and crustaceans. Soluble in concentrated hydrochloric acid, sulfuric acid, glacial acetic acid and 78% - 97% phosphoric acid, almost insoluble in water, dilute acid, alkali, ethanol and other organic solvents. LD50 (rat, intravenous) 50mg/kg. The deacetylation product of chitin is chitosan. Chitin has three structural forms due to its different sources- α、β and ν。α- Chitin molecular chains are arranged in an antiparallel manner, with strong intermolecular hydrogen bonding force. β- The main chains of chitin molecules are arranged in parallel with each other, and the interaction between molecules is weak. γ- Chitin molecules have both the above-mentioned molecular structures. α- Chitin is a kind of chitin extracted from shrimp and crab shells. β- Chitin can be separated from the feather shell of squid or squid

Purpose: biochemical research. It can be used as chromatographic carrier, environmental protection, purification of radioactive pollution, comprehensive utilization of ore, glass fiber finishing agent, dye made into polymer, additive in papermaking industry, finishing agent of other fabrics, and photographic industrial materials

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