| Vendor | Spec | Unit | Price | Currency | Date |
| chempricehub | National standard | Kg | 0.21 | USD | 20170501 |
| chempricehub | National standard | Kg | 1.91 | USD | 20170423 |
| chempricehub | National standard | Kg | 0.28 | USD | 20170423 |
| chempricehub | National standard | Kg | 0.21 | USD | 20170423 |
| chempricehub | National standard | Kg | 0.24 | USD | 20170423 |
| chempricehub | National standard | Kg | 1.54 | USD | 20170422 |
| chempricehub | National standard | Kg | 1.93 | USD | 20170422 |
| chempricehub | National standard | Kg | 1.43 | USD | 20170422 |
| chempricehub | National standard | Kg | 1.64 | USD | 20170422 |
| chempricehub | National standard | Kg | 0.21 | USD | 20170422 |