L-valine

[cas no.]: 72-18-4
[molecular weight]: 117
[chemical formula]: c5h12no2
items specifications usp24 test results
description white crystals or crystalline powder confirms
mesh size(80mesh pass rate) % 98
assay (%) 90.0-95.0 91.7
ph 5.5~7.0 6.1
specific rotation +26.~+28.8 +27.3
residue on ignition % less than0.2 confirms
loss on drying (%) less than0.3 0.21
chloride (cl) % Less than0.05 less than 0.05
iron (fe) ppm less than 30 Less than 30
sulfate ( so4) % less than 0.03 less than 0.03
heavy metals ppm less than 15 less than 15
lead (pb) ppm less than 5 less than 5
arsenic ppm Less than 3 less than 3
cadmiun (cd) ppm less than 1 less than 1
mercury (hg) ppm less than 1 less than 1
total plate count cfug Less than 2000 less than 100c
yeast&mol cfug Less than 100 less than 100.