Substance profile
Cobalt chloride (cocl2)
Cobalt chloride (cocl2) is pale-blue hygroscopic leaflets; colorless in very thin layers with a slight sharp odor.
01 · Identification
What Cobalt chloride (cocl2) is
Cobalt chloride (cocl2) is pale-blue hygroscopic leaflets; colorless in very thin layers with a slight sharp odor. Its molecular formula is Cl2Co and its molecular weight is 129.84 g/mol. It boils at 1049 °C, melts at 735 °C, is soluble in water.
Under the GHS it carries the signal word Danger.
Other names for Cobalt chloride (cocl2)
- cobalt dichloride
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. |
| H302 | Harmful if swallowed. |
| 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, P270, P272, P273, P280, P301, P308, P312, P313, P330, P333, P391, P501
This page lists only the codes assigned to Cobalt chloride (cocl2). The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
03 · Physical and chemical properties
Cobalt chloride (cocl2) 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 |
|---|---|---|---|
| Boiling point | 1049 °C (1920.2 °F) | HSDB | |
| 1049 °C (1920.2 °F) | at 760 mmHg | DOE PAC | |
| Melting point | 735 °C (1355 °F) | HSDB | |
| 86.11 °C (187 °F) | CAMEO | ||
| 737 °C (1358.6 °F) | DOE PAC | ||
| Density | 1.924 g/cm³ | at 20 °C | CAMEO |
| 3.36 g/cm³ | at 25 °C | HSDB | |
| 2.477 g/cm³ | at 25 °C | HSDB | |
| Solubility | Soluble in water | HSDB | |
| Soluble in alcohols, acetone, ether, glycerol, and pyridine | HSDB | ||
| 53.420 lb/100 lb water at 70 °F | at 21.11 °C | HSDB | |
| Vapor pressure | 75.0062 mmHg | at 818 °C | HSDB |
| 75 mmHg | at 818 °C | DOE PAC | |
| Lower explosive limit (LEL) | Reacts violently with alkali metals such as potassium or sodium causing fire and explosion hazard. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Cobalt chloride (cocl2)
Storage conditions
Keep container tightly closed in a dry and well-ventilated place. ... Moisture sensitive. Handle and store under inert gas. Hygroscopic. ... Storage class (TRGS 510): Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Oxidizing agents, alkali metals.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
A 0.2 molar aqueous solution has a pH of 4.6. COBALT CHLORIDE acts as a weakly acidic inorganic salt, which is soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions. Potassium or sodium metals act to reduce metal halides, producing exothermic reactions, even explosions [Bretherick, 5th Ed., 1995].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Cobalt chloride (cocl2) in the storage compatibility matrix →
Safety Data Sheet
Getting an SDS for Cobalt chloride (cocl2)
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Cobalt chloride… issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
Nearby
Substances next to Cobalt chloride (cocl2)
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