| Vendor | Spec | Unit | Price | Currency | Date |
| chempricehub | National standard | Kg | 1.7 | USD | 20200520 |
| chempricehub | National standard | Kg | 1.58 | USD | 20200520 |
| chempricehub | National standard | Kg | 0.22 | USD | 20200520 |
| chempricehub | National standard | Kg | 0.19 | USD | 20200519 |
| chempricehub | National standard | Kg | 1.33 | USD | 20200519 |
| chempricehub | National standard | Kg | 0.26 | USD | 20200519 |
| chempricehub | National standard | Kg | 0.22 | USD | 20200519 |
| chempricehub | National standard | Kg | 0.19 | USD | 20200519 |
| chempricehub | National standard | Kg | 0.2 | USD | 20200519 |
| chempricehub | National standard | Kg | 0.2 | USD | 20200518 |