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Specification of Chitin

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TEST

SPECIFICATION

RESULT

REMARK

Appearance:

White or Yellow, Flake

Pass

Gardner No.Max.2

Density

Pass

2-5cm

Sieve No pass ration(Fisher)

Moisture Content

Less than 10%

7.60%

Dry 3hr at 105 deg. C.

Residue on Ignition

Less than 2.5%

0.28%

Ashing Method

Protein Content

Less than 1%

Pass

Kjeldal method

Degree of Deacetylation

70 - 100%

N/A

Colloidal method

Viscosity

600(0.5% Sol.)

 

0.5% or 1% Chitin in 5% LiCl solution(5g of LiCl + 95ml DMAC) by stirring 6hr. Measure with Brookfield viscometer (Model DV-ll+) LVspindle#(0-4) at 20 deg.C  

Insolubles

Less than 1% insolubility

Pass

Dissolved 10g of chitosan in 50ml of 5% LiCl solution(5g of LiCl + 95ml DMAC).Chitosan solution to which added 200 ml distilled water was stirred 1hr. Filtration with a GF/C and washed with 20ml acetone. Dry residue at 105 deg. C

Heavy metals(As)

Less than 10 ppm

ICP Analysis

      

Heavy metals(Pb)

Less than 10 ppm

ICP Analysis

   

pH

7 - 9

8.0

Dispersed 1g of chitosan in 99ml of distilled water after stirred 15 min.

Odor

No taste and smell

          

            

Packing

20 kgs net each

 

Corrugated carton box with PE liner

  

Dalwoo-chitoSan supply first quality bulk chitin, chitosan and chitosan oligomer in various grades at a competitive price.  Please contact us for further information

  

Chitosan Oligomer

Food grade Chitosan

Pharmaceutical grade Chitosan

Carboxymethyl Chitosan

Technical grade Chitosan

Liquid Chitos(Food Grade)

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Last updated April 12, 199

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