| Vendor | Spec | Unit | Price | Currency | Date |
| chempricehub | National standard | Kg | 0.77 | USD | 20170513 |
| chempricehub | National standard | Kg | 0.73 | USD | 20170511 |
| chempricehub | National standard | Kg | 5.83 | USD | 20170510 |
| chempricehub | National standard | Kg | 0.69 | USD | 20170510 |
| chempricehub | National standard | Kg | 5.21 | USD | 20170501 |
| chempricehub | National standard | Kg | 0.74 | USD | 20170501 |
| chempricehub | National standard | Kg | 0.76 | USD | 20170501 |
| chempricehub | National standard | Kg | 0.85 | USD | 20170501 |
| chempricehub | National standard | Kg | 0.69 | USD | 20170501 |
| chempricehub | National standard | Kg | 0.76 | USD | 20170501 |