| Molecular Formula | Cl2H16HfO9 |
| Molar Mass | 409.52 |
| Density | 2.2 |
| Melting Point | decomposes [KIR80] |
| Water Solubility | Soluble in water. |
| Appearance | Powder |
| Color | White |
| Storage Condition | Room Temprature |
| Sensitive | Hygroscopic |
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | 3260 |
| RTECS | MG4800000 |
| TSCA | Yes |
| Hazard Class | 8 |
| Packing Group | III |
| Exposure Limits | ACGIH: TWA 0.5 mg/m3 NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 |