| Barium Hydroxide Octahydrate | Barium Hydroxide Monohydrate |
| Molecular formula: Ba(OH) 2·8H2O | Molecular formula: Ba(OH) 2·H2O |
| Molecular Weight: 315.48 | Molecular Weight: 315.48 |
| Appearance: colorless crystal | Appearance: colorless crystal |
| UN No.:1564 | UN No.:1564 |
| EINECS No.:241-234-5 | EINECS No.:241-234-5 |
| CAS NO.:12230-71-6 | CAS NO.:22326-55-22 |
| Items | Specification | ||
| Top grade | First grade | Qualified grade | |
| Assay (Ba(OH) 2·8H2O) | 98.0%min | 96.0%min | 95.0%min |
| BaCO3 | 1.0%max | 1.5%max | 2.0%max |
| Chloride (Cl) | 0.05%max | 0.20%max | 0.30%max |
| Ferric (Fe) /ppm | 60%max | 100%max | 100%max |
| Hydrochloric acid insoluble | 0.05%max | — | — |
| Sulfuric acid insoluble | 0.5%max | — | — |
| Sulfide (S) | 0.05%max | — | — |
| Strontium (Sr) | 2.5%max | — | — |
| Item | Specifications |
| Assay [Ba(OH)2•H2O] | 99%min |
| Barium Carbonate(BaCO3) | 0.5%max |
| Ferric(Fe) | 0.004%max |
| Hydrochloric acid insoluble | 0.01%max |
| Sulfide(based on S) | 0.01%max |