L-Valine 72-18-4 (S)-(+)-VALINE;(S)-ALPHA-AMINOISOVALERIC ACID;VALINE, L-;VALINE;2-AMINO-3-METHYLBUTANOIC ACID;2-AMINOISOVALERIC ACID;H-VAL-OH;H-L-VAL-OH
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 |
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