USD $10.00-100.00 / Kilogram
USD $11,000.00-12,000.00 / Metric Ton
USD $11,000.00-12,000.00 / Metric Ton
USD $11,000.00-12,000.00 / Metric Ton
USD $11,000.00-12,000.00 / Metric Ton
USD $10.00-10.00 / Kilogram
product | |
product name | l-threonine |
synonyms | l-2-amino-3-hydroxybutyric acid |
cas no. | 72-19-5 |
molecular formula | c4h9no3 |
molecular weight | 119.12 |
specifications | |
appearance | white powder |
water solubility | 90 g/l (20 ºc) |
melting point | 255 ºc |
assay | 97%+ |
others | |
packing | as requested |
application | phamaceutical intermediates,biochemical reagents |
item |
standard |
item |
standard |
specific rotation |
-27.6°~ -29.0° |
transmittance |
≥98.0% |
assay |
98.5%~100.5% |
sulphate so42- |
≤0.02% |
ammonium nh4+ |
≤0.02% |
iron(fe) |
≤10ppm |
heavy metal(pb) |
≤10ppm |
arsenic |
≤1ppm |
residue on ignition |
≤0.1% |
loss on drying |
≤0.2% |
p h |
chloride(cl) |
≤0.02% |