Chitosan
【 CAS No】 9012-76-4
【Molecular formula】 (C6 H11NO4)n
【Molecular weight】 (161.9) n
Grades
Items
|
Pharma. grade
|
Food grade
|
Industrial grade
|
Feed grade
|
High density
|
High viscosity & High MW
|
Appreance
|
white powder
|
white powder or flake
|
Off-white flake or powder
|
off-white powder
|
0ff-white powder
|
white flake or powder
|
Deacetylation degree
|
>90%; 95%
|
>85%; 90%; 95%
|
>80%
|
>80%
|
>85%; 90%; 95%
|
>80%
|
Viscosity
|
<200 mpa.s
|
<200 mpa.s
|
0-500 mpa.s
|
---
|
<200 mpa.s
|
500-5000mpa.s
|
Moisture content
|
<10%
|
<10%
|
<10%
|
<10%
|
<10%
|
<12%
|
Ash content
|
<1.0%
|
<1%
|
<2.5%
|
---
|
<1%
|
<1%
|
Insoluble
(in 1% acetic acid)
|
<1.0%
|
<1%
|
<1%
|
---
|
<1%
|
<1%
|
Pb
|
<2ppm
|
<2ppm
|
---
|
<10ppm
|
<2ppm
|
<2ppm
|
As
|
<0.5ppm
|
<0.5ppm
|
---
|
<0.5ppm
|
<0.5ppm
|
<0.5ppm
|
Total plate count
|
<1000cfu/g
|
<1000cfu/g
|
---
|
---
|
<1000cfu/g
|
---
|
E.Coli
|
Negative
|
Negative
|
---
|
---
|
Negative
|
---
|
Mold and yeast
|
<25
|
<100
|
---
|
---
|
<100cfu/g
|
---
|
Particle Size
|
80mesh
|
80mesh-100mesh
|
1mm-5mm or
20-80 mesh
|
---
|
80-120mesh
|
1mm-5mm; or
20-80mesh
|
Packing
|
25kg/drum
|
---
|
25kg/drum
|
---
|
25kg/drum
|
10kg,25kg
|
Bulk density
|
---
|
---
|
---
|
---
|
0.4-0.8 g/ml
|
---
|
Also offer special Chitosans
【Flocculation chitosan】
【Antibiotic chitosan】
【Fresh-keeping chitosan 】
【Paper-making chitosan 】
【Adhesive chitosan】