| Vendor | Spec | Unit | Price | Currency | Date |
| chempricehub | National standard | Kg | 145.18 | USD | 20180314 |
| chempricehub | National standard | Kg | 15.93 | USD | 20180314 |
| chempricehub | National standard | Kg | 19.99 | USD | 20180314 |
| chempricehub | National standard | Kg | 14.11 | USD | 20180314 |
| chempricehub | National standard | Kg | 126.47 | USD | 20180313 |
| chempricehub | National standard | Kg | 89.49 | USD | 20180313 |
| chempricehub | National standard | Kg | 89.33 | USD | 20180312 |
| chempricehub | National standard | Kg | 143.04 | USD | 20180312 |
| chempricehub | National standard | Kg | 13.92 | USD | 20180312 |
| chempricehub | National standard | Kg | 142.66 | USD | 20180311 |