| Assay/Purity | min 98% |
| Appearance of solution | Passes test |
| IR Spectrum | Conforms to Standard |
| pH (10% water) | 1.0 - 1.4 |
| Chloride (CI) | 7.5 - 7.9% (calculated on dried substance) |
| Free phosphate (PO4) | < 1.0% |
| Sulfate (SO4) | < 0.01% |
| Heavy metal (as Pb) | < 0.001% |
| Arsenic (As) | < 0.0003% |
| Thiamin Monophosphoric Acid | < 4.0% |
| Ester Chloride | (HPLC) |
| Thiamine Dichloride (HPLC) | < 0.5% |
| Related substances (HPLC) | < 1.5% |
| Loss on Drying (130 C) | < 1.5% |
| Endotoxins | < 12%I.U./g |
| Microbiological test | Passes test |
| Methanol (GC) | < 2.0% |
| Other residual solvents | excluded by manufacturing process |
