Molecular Structure:

Product description: Character: It is extracted from chitin, insoluble in water but soluble in dilute acid and absorbed by human body. As the firdt derivate, it's chemical constitution is macromolecule alkalescent polysaccharide polymer with cation. It has peculiar physical, chemical properties and bioactive function. Application: It can mostly be applied in the following industries: texeile, dyeing and printing, leather, tobacco, plastics, food additive, fodder, pharmaceutics, color film, paper manufacturing, biological engineering, agriculture protecting and dispose waste water etc. Index: 　Items Industrial Grade Food Grade Pharmaceutical Grade High Density Grade 　Appearance White to Light Yellow Flake Light Yellow Powder White to Light Yellow Powder Light Yellow Powder Deacetylated Degree % ≥70 　≥85 　≥90 　≥90 Moisture % ≤12.0 ≤10.0 ≤8.0 ≤8.0 Ash % ≤2.0 ≤1.0 ≤1.0 ≤1.0 Viscosity mpa.s 100-800 ≤100 ≤100 ≤100 Arsenic ppm —— ≤0.5 ≤0.5 ≤0.5 Heavy Metals ppm —— ≤10 ≤10 ≤10 Bulk Density g/ml —— ≥0.3 ≥0.3 ≥0.6 Total Plate Count cfu/g —— 　≤1000 　≤1000 　≤1000 E.Coli —— Negative Negative Negative Salmonella —— Negative Negative Negative