CAS number： 58-27-5
Molecular formula： C11H8O2
molecular weight： 172.18
Chemical structure：
| Product Name | Vitamin K3（Menadione Nicotinamide Bisulfite） | |
| Shelf Life | 2 years | |
| Item | Specification | Result |
| Description | White or yellowish crystalline powder | Yellowish crystalline powder |
| Menadione | ≥44.0% | 44.6% |
| Water Content | ≤1.2% | 0.4% |
| Nicotinamide | ≥31.2% | 31.5% |
| Heavy Metals (as Pb) | ≤20ppm | 1.2ppm |
| Arsenic | ≤2ppm | 0.5ppm |
| Chromium | ≤120ppm | 85ppm |
| Solution Color | No.4 of yellow and green standard colorimetric solution | Meets Requirement |
