Item

Standard

 Appreance

 0ff-white powder

 Deacetylation degree

 >85%; 90%; 95%

 Viscosity

 <200 mpa.s

Bulk density

0.4-0.8 g/ml

 Moisture content

 <10%

 Ash content

 <1%

Insoluble

<1%

 Pb

 <2ppm

 As

 <0.5ppm

 Total plate count

 <1000cfu/g

 E.Coli

 Negative

Mold and yeast

<100cfu/g

Particle size

80-120mesh

Packing

25kg/drum