Substance profile
Cobalt dinitrate
Cobalt dinitrate is a pale red powder and is odorless.
01 · Identification
What Cobalt dinitrate is
Cobalt dinitrate is a pale red powder and is odorless. Its molecular formula is CoN2O6 and its molecular weight is 182.94 g/mol. It melts at 55 °C, is soluble in water.
Under the GHS it carries the signal word Danger.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H350i | May cause cancer by inhalation. |
| H341 | Suspected of causing genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H360F | May damage fertility. |
| H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled. |
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P261, P272, P273, P280, P308, P313, P333, P391, P501
03 · Physical and chemical properties
Cobalt dinitrate properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 55 °C (131 °F) | CAMEO | |
| 102.5 °C (216.5 °F) | range, midpoint shown | HSDB | |
| 55.5 °C (131.9 °F) | range, midpoint shown | HSDB | |
| Density | 2.49 g/cm³ | HSDB | |
| 1.54 g/cm³ | at 20 °C | CAMEO | |
| Solubility | Soluble in water | HSDB | |
| Solubility: 97.929 lb/100 lb water at 70 °F | at 21.11 °C, Cobaltous nitrate hexahydrate | HSDB | |
| Water solubility: >669.6 g/L at 20 °C | at 20 °C, Cobaltous nitrate hexahydrate | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Cobalt dinitrate
Storage conditions
Separated from combustible and reducing substances. Well closed. Store in an area without drain or sewer access.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Explosive reaction with ammonium hexacyanoferrate(II) at 220 °C. Potentially explosive reaction with carbon.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Mixtures of metal/nonmetal nitrates with alkyl esters may explode, owing to the formation of alkyl nitrates; mixtures of a nitrate with phosphorus, tin (II) chloride or other reducing agents may react explosively [Bretherick, 1979 p. 108-109].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Cobalt dinitrate in the storage compatibility matrix →