Thiamine Mononitrate (Vitamin B1)
Chemical Name | Thiamine Mononitrate |
CAS Number | 532-43-4 |
Molecular Formula | C12H17N5O4S |
Molecular Weight | 327.36 |
Molecular Structure | |
Packing | 25kg/Carton |
Storage | Keep sealed and protected from light. Store in a cool, dry place. |
Application | Used as nutritional supplements or nutritional fortifiers. |
SPECIFICATION
Items | Specification |
Appearance | White crystals or crystalline powder, usually having a slight,characteristic odor. |
Identification | A: Color reaction A brown ring forms at the junction of the two liquids |
B: Precipitate reaction The color of the solution changes to brown and, on standing, a precipitate of lead sulfide forms | |
C: Precipitate reaction Identification A white precipitate results from treatment with mercuric chloride, and a red-brown precipitate results from treatment with iodine, treatment with mercuric-potassium iodide and trinitrophenol also | |
D: Reaction of fluorescence The air-liquid meniscus shows a vivid blue fluorescence which disappears when the mixture is slightly acidified and reappears when it is again made alkaline | |
pH | 6.0 ~ 7.5 |
Loss on Drying | ≤ 1.0% |
Residue on Ignition | ≤ 0.2% |
Chloride | ≤ 0.06% |
Chromatographic Purity (Related compounds) | ≤ 1.0% |
Residual Solvent | Methanol ≤ 0.3% |
Assay (on dry basis) | 98.0% ~102.0% (HPLC) |
Standard | USP2021 |
