CHANGZHOU HIGHASSAY® CHEMICAL CO., LTD

              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

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 <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

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---

 <1000cfu/g

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 E.Coli

 Negative

 Negative

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 Negative

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Mold and yeast

<25

<100

---

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<100cfu/g

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Particle Size

80mesh

80mesh-100mesh

1mm-5mm or
20-80 mesh

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80-120mesh

1mm-5mm; or
20-80mesh

Packing

25kg/drum

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25kg/drum

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25kg/drum

10kg,25kg

Bulk density

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0.4-0.8 g/ml

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