USD $6.00-9.00 / Gram
USD $6.00-9.00 / Gram
USD $1.00-10.00 / Kilogram
USD $8.20-8.80 / Kilogram
USD $6.00-9.00 / Gram
USD $6.00-9.00 / Gram
USD $8.20-8.80 / Kilogram
USD $3.00-10.00 / Kilogram
USD $3.00-10.00 / Kilogram
item |
spec. (usp) |
description |
white crystals or crystalline powder |
assay |
98.5%-101% |
identification (ir) |
corresponding to reference spectrum |
ph |
5.5-7.0 |
specific rotation |
+26.6°~ +28.8° |
residue on ignition |
0.1% max |
loss on drying |
0.3% max |
chloride (cl) |
200ppm max |
iron (fe) |
10ppm max |
sulfate (so4) |
300ppm max |
ammonium |
200ppm max |
heavy metals |
10ppm max |
lead (pb) |
3ppm max |
arsenic (as) |
1ppm max |
cadmium (cd) |
1ppm max |
mercury (hg) |
0.1ppm max |
total plate count |
1000cfu/g max |
yeast and molds |
100cfu/g max |
e.coli |
negative in 1g |
staphylococcus aureus |
negative in 1g |
salmonella |
negative in 10g |
organic volatile impurities |
meet the requirements |