| Vendor | Spec | Unit | Price | Currency | Date |
| chempricehub | National standard | Kg | 0.2 | USD | 20200916 |
| chempricehub | National standard | Kg | 1.09 | USD | 20200915 |
| chempricehub | National standard | Kg | 0.2 | USD | 20200914 |
| chempricehub | National standard | Kg | 0.17 | USD | 20200914 |
| chempricehub | National standard | Kg | 0.2 | USD | 20200914 |
| chempricehub | National standard | Kg | 3.58 | USD | 20200913 |
| chempricehub | National standard | Kg | 0.17 | USD | 20200912 |
| chempricehub | National standard | Kg | 0.17 | USD | 20200912 |
| chempricehub | National standard | Kg | 3.59 | USD | 20200910 |
| chempricehub | National standard | Kg | 0.2 | USD | 20200910 |