hangzhou dingyan chem is a leading manufacturer and supplier of chemicals in china.we develop,produce and distribute high quality pharmaceuticals, intermediates, special chemicals and other fine chemicals.
we could give you:
1.best quality in your requirement
2.competitive price in china market
3.mature technical support
4.professional logistic support
all we want is win-win business. send yr. inquiries, you will get it!
items |
standard |
result |
assay (quercetin) |
98% uv 95%hplc |
98.14% 95.12% |
physical & chemical control |
||
appearance |
light yellow powder |
complies |
odor |
characteristic |
complies |
mesh size |
80 mesh |
complies |
loss on drying |
≤5.0% |
2.12% |
residue on ignition |
≤5.0% |
2.01% |
heavy metals |
<5ppmmax |
complies |
as |
<2ppm |
complies |
pesticides |
negative |
negative |
microbiological |
||
total plate count |
<1000/gmax |
complies |
yeast & mold |
<100/gmax |
complies |
salmonella |
negative |
negative |
e.coli |
negative |
negative |