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.
02 · Identifiers
Cobalt chloride (cocl2) identifiers and molecular data
Cobalt chloride (cocl2) CAS number and EC number
Cobalt chloride (cocl2) molecular formula and molecular weight
Other names for Cobalt chloride (cocl2)
- cobalt dichloride
03 · GHS classification
Cobalt chloride (cocl2) hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Cobalt chloride (cocl2) pictograms and signal word
Cobalt chloride (cocl2) hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Respiratory sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H334 | GHS08 |
| Skin sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H317 | GHS07 |
| Germ cell mutagenicity GHS chapter 3.5 | Category 2 | H341 | GHS08 |
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 1 | H410 | GHS09 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Cobalt chloride (cocl2) hazard statements (H-codes)
| 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. |
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.
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.
04 · Precautionary statements
Cobalt chloride (cocl2) precautionary statements
CLP Annex VI assigns 14 precautionary statements to Cobalt chloride (cocl2). They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Disposal
What has to happen to the contents and the empty container.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Cobalt chloride (cocl2) name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | кобалтов дихлорид |
| Spanish español | Dicloruro de cobalto |
| Czech čeština | chlorid kobaltnatý |
| Danish dansk | cobaltdichlorid |
| German Deutsch | Cobaltdichlorid |
| Estonian eesti | koobaltdikloriid |
| Greek ελληνικά | διχλωριούχο κοβάλτιο |
| English English | cobalt dichloride |
| French français | dichlorure de cobalt |
| Croatian hrvatski | kobaltov diklorid |
| Italian italiano | dicloruro di cobalto |
| Latvian latviešu | kobalta dihlorīds |
| Lithuanian lietuvių | kobalto dichloridas |
| Hungarian magyar | kobalt-diklorid |
| Maltese Malti | diklorur tal-kobalt |
| Dutch Nederlands | kobaltdichloride |
| Polish polski | dichlorek kobaltu |
| Portuguese português | dicloreto de cobalto |
| Romanian română | diclorură de cobalt |
| Slovak slovenčina | chlorid kobaltnatý |
| Slovenian slovenščina | kobaltov diklorid |
| Finnish suomi | kobolttidikloridi |
| Swedish svenska | koboltdiklorid |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Cobalt chloride (cocl2) GHS label elements
Everything CLP Annex VI fixes for Cobalt chloride (cocl2), laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Cobalt chloride (cocl2)
- May cause cancer by inhalation.
- Suspected of causing genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- May damage fertility.
- Harmful if swallowed.
- May cause allergy or asthma symptoms or breathing difficulties if inhaled.
- May cause an allergic skin reaction.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Obtain special instructions before use.
- Avoid breathing dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Contaminated work clothing should not be allowed out of the workplace.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF exposed or concerned:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Get medical advice/attention.
- Rinse mouth.
- If skin irritation or rash occurs:
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Cobalt chloride (cocl2) in the GHS label constructor →
07 · Health hazards
Cobalt chloride (cocl2) health hazards and exposure limits
Cobalt chloride (cocl2) hazard summary
An eye irritant; May cause skin sensitization and asthma after prolonged contact; [ICSC] The anhydrous form is very hygroscopic and converts into the hexahydrate form in moist air, changing color from blue to red. [Ullmann] Cobalt chloride is a potent allergen; [Kanerva, p. 506] See Cobalt.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Cobalt chloride (cocl2) carcinogenicity classification
... There is limited evidence for the carcinogenicity of cobalt(II) chloride in experimental animals. ... Overall Evaluation: Cobalt and cobalt compounds are possibly carcinogenic to humans (Group 2B). /Cobalt and cobalt compounds/
Source: Hazardous Substances Data Bank (HSDB)
There is inadequate evidence for the carcinogenicity of cobalt and cobalt compounds in humans. There is sufficient evidence for the carcinogenicity of cobalt metal powder in experimental animals. There is limited evidence for the carcinogenicity of metal alloys containing cobalt, chromium and molybdenum in experimental animals. ... Overall Evaluation: Cobalt and cobalt compounds are possibly carcinogenic to humans (Group 2B). /Cobalt and cobalt compounds/
Source: Hazardous Substances Data Bank (HSDB)
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
08 · 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.
Cobalt chloride (cocl2) boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 1049 °C (1920.2 °F) | HSDB | |
| 1049 °C (1920.2 °F) | at 760 mmHg | DOE PAC |
Cobalt chloride (cocl2) melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 735 °C (1355 °F) | HSDB | |
| 86.11 °C (187 °F) | CAMEO | ||
| 737 °C (1358.6 °F) | DOE PAC |
Cobalt chloride (cocl2) density
| Property | Value | Conditions | Source |
|---|---|---|---|
| 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 |
Cobalt chloride (cocl2) solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| 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 |
Cobalt chloride (cocl2) vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 75.0062 mmHg | at 818 °C | HSDB |
| 75 mmHg | at 818 °C | DOE PAC |
Cobalt chloride (cocl2) lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| 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.
09 · Handling and storage
Cobalt chloride (cocl2) storage 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)
Cobalt chloride (cocl2) incompatible materials
Incompatible materials: Oxidizing agents, alkali metals.
Source: Hazardous Substances Data Bank (HSDB)
Cobalt chloride (cocl2) 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 →
10 · Questions
Cobalt chloride (cocl2) — frequently asked questions
What is the CAS number of Cobalt chloride (cocl2)?
The CAS number of Cobalt chloride (cocl2) is 7646-79-9. Its EC number is 231-589-4.
What is the chemical formula of Cobalt chloride (cocl2)?
The molecular formula of Cobalt chloride (cocl2) is Cl2Co and its molecular weight is 129.84 g/mol.
What does a Cobalt chloride (cocl2) label have to show?
Under CLP Annex VI the label for Cobalt chloride (cocl2) carries the pictograms Health hazard, Exclamation mark and Environment and the signal word is Danger.
Is Cobalt chloride (cocl2) flammable?
CLP Annex VI assigns Cobalt chloride (cocl2) no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is Cobalt chloride (cocl2) a carcinogen?
Yes. CLP Annex VI classifies Cobalt chloride (cocl2) as a category 1A or 1B carcinogen and assigns it H350i: may cause cancer by inhalation.
What is the boiling point of Cobalt chloride (cocl2)?
The boiling point reported for Cobalt chloride (cocl2) is 1049 °C (1920.2 °F) (HSDB).
What is the melting point of Cobalt chloride (cocl2)?
The melting point reported for Cobalt chloride (cocl2) is 735 °C (1355 °F) (HSDB).
How should Cobalt chloride (cocl2) be stored?
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. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Cobalt chloride (cocl2)
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