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Properties: Off-white, innocuous, flavorless, amorphous and semitransparent solid, soluble in acid, insoluble in water and alkalis or ordinary organic solvents, decomposed at 185°C.
Application: Widely used in the following industries: pharmaceuticals, food, health care, textile , dyeing and printing, leather, coating, tobacco, plastics, cosmetics, feed, color film, paper making, bioengineering, agriculture protecting and sewage treatment etc.
Quality Index:
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Item
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Pharmaceutical Grade
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Food Grade
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Industrial Grade
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Appearance
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Off-white powder
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Off-white powder
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Off-white or light yellow semitransparent flake or powder
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Degree of Deacetylation, %
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≥85,90, 95
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≥85, 90, 95
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≥80, 85, 90
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pH
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7.0-8.0
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7.0-8.0
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7.0-8.0
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Loss on Drying,%
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≤10
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กก≤10
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กก≤12
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Residue on Ignition, %
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≤1.0
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≤1.0
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≤2.0
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Insoluble, %
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≤1.0
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≤1.0
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≤2.0
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Heavy Metals, ppm (as Pb)
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กก≤10
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กก≤10
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------
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Arsenic, ppm
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≤0.5
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≤0.5
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------
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Total Plate Count, cfu/g
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≤1000
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≤1000
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------
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Yeast, cfu/g
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≤100
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≤100
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------
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E.Coli
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Negative
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Negative
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------
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Salmonella
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Negative
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Negative
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------
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Viscosity (1%,20°C), mpa.s
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30-1000
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Particle Size, mesh
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40, 60, 80,100
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Packing
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25kg/drum, 20kg/carton
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