| Vendor | Spec | Unit | Price | Currency | Date |
| chempricehub | National standard | Kg | 1.46 | USD | 20190913 |
| chempricehub | National standard | Kg | 22.31 | USD | 20190913 |
| chempricehub | National standard | Kg | 1.51 | USD | 20190912 |
| chempricehub | National standard | Kg | 10.63 | USD | 20190912 |
| chempricehub | National standard | Kg | 1.54 | USD | 20190912 |
| chempricehub | National standard | Kg | 11.93 | USD | 20190911 |
| chempricehub | National standard | Kg | 1.45 | USD | 20190910 |
| chempricehub | National standard | Kg | 10.18 | USD | 20190901 |
| chempricehub | National standard | Kg | 22.3 | USD | 20190901 |
| chempricehub | National standard | Kg | 11.92 | USD | 20190901 |