Description
L-Threonine COA — 99% Purity Specification
| Test Parameter | Specification |
|---|---|
| Product Name | L-Threonine |
| Chemical Name | (2S,3R)-2-Amino-3-hydroxybutanoic acid |
| CAS No. | 72-19-5 |
| Molecular Formula | C₄H₉NO₃ |
| Molecular Weight | 119.12 g/mol |
| Appearance | White crystalline powder |
| Identification | Conforms |
| Assay | 98.5–101.5% |
| Specific Rotation [α]D²⁰ | −26.7° to −29.1° |
| pH | 5.0–6.5 |
| Loss on Drying | ≤0.20% |
| Residue on Ignition | ≤0.10% |
| Chloride | ≤0.05% |
| Sulfate | ≤0.03% |
| Iron | ≤10 ppm |
| Heavy Metals | ≤10 ppm |
| Lead (Pb) | ≤3 ppm |
| Arsenic (As) | ≤1 ppm |
| Cadmium (Cd) | ≤1 ppm |
| Mercury (Hg) | ≤0.1 ppm |
| Total Plate Count | ≤1,000 CFU/g |
| Yeast & Mold | ≤100 CFU/g |
| E. coli | Absent |
| Salmonella | Absent |
| Storage | Store in a cool, dry place in a tightly closed container |
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