Substance profile
Cobalt diacetate
Cobalt diacetate is light pink crystals with a vinegar-like odor.
01 · Identification
What Cobalt diacetate is
Cobalt diacetate is light pink crystals with a vinegar-like odor. Its molecular formula is C4H6CoO4 and its molecular weight is 177.02 g/mol. It melts at 140 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Cobalt diacetate identifiers and molecular data
Cobalt diacetate CAS number and EC number
Cobalt diacetate molecular formula and molecular weight
Other names for Cobalt diacetate
- cobalt di(acetate)
03 · GHS classification
Cobalt diacetate hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Cobalt diacetate pictograms and signal word
Cobalt diacetate hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| 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 diacetate 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. |
| 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 diacetate. 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 diacetate
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 diacetate 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 diacetate precautionary statements
CLP Annex VI assigns 10 precautionary statements to Cobalt diacetate. 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 diacetate 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 ди(ацетат) |
| Spanish español | Di(acetato) de cobalto |
| Czech čeština | octan kobaltnatý |
| Danish dansk | cobaltdi(acetat) |
| German Deutsch | Cobaltdi(acetat) |
| Estonian eesti | koobaltdiatsetaat |
| Greek ελληνικά | διοξικό κοβάλτιο |
| English English | cobalt di(acetate) |
| French français | di(acétate) de cobalt |
| Croatian hrvatski | kobaltov di(acetat) |
| Italian italiano | acetato di cobalto |
| Latvian latviešu | kobalta di(acetāts) |
| Lithuanian lietuvių | kobalto diacetatas |
| Hungarian magyar | kobalt-diacetát |
| Maltese Malti | di(aċetat) tal-kobalt |
| Dutch Nederlands | kobaltdi(acetaat) |
| Polish polski | octan kobaltu(II) |
| Portuguese português | di(acetato) de cobalto |
| Romanian română | di(acetat) de cobalt |
| Slovak slovenčina | octan kobaltnatý |
| Slovenian slovenščina | kobaltov diacetat |
| Finnish suomi | kobolttidiasetaatti |
| Swedish svenska | koboltdi(acetat) |
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 diacetate GHS label elements
Everything CLP Annex VI fixes for Cobalt diacetate, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Cobalt diacetate
- 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.
- 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.
- 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 exposed or concerned:
- Get medical advice/attention.
- 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 diacetate in the GHS label constructor →
07 · Health hazards
Cobalt diacetate health hazards and exposure limits
Cobalt diacetate hazard summary
An eye irritant; [CAMEO] May cause skin sensitization and asthma after prolonged contact; [CHEMINFO] Harmful if swallowed; May cause skin sensitization; [MSDSonline] See Cobalt.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Cobalt diacetate carcinogenicity classification
... There is inadequate evidence for the carcinogenicity of ... cobalt(III) acetate 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 diacetate 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 diacetate melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 140 °C (284 °F) | CAMEO | |
| 298 °C (568.4 °F) | decomposes, decomposes | HSDB |
Cobalt diacetate density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.71 g/cm³ | at 20 °C | CAMEO |
Cobalt diacetate solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Readily soluble in water | HSDB | |
| Soluble in alcohol and dilute acids | HSDB | ||
| 2.1 parts by wt (of the formula wt)/100 parts methanol by wt at 15 °C | at 15 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Cobalt diacetate fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Fire and explosion
Reacts with strong oxidants causing fire and explosion hazard. /Tetrahydrate ("The recommendations on this Card also apply to Cobalt (II) acetate anhydrous (CAS 71-48-7).")/
Source: HSDB
Physical behaviour
Intense red monoclinic, prismatic crystals; density 1.705; on heating becomes anhydrous by 140 °C; soluble in water, alcohols, dilute acids, and pentyl acetate; pH of 0.2 molar aqueous solution: 6.8 /Cobalt(2+) acetate tetrahydrate/
Source: HSDB
10 · Handling and storage
Cobalt diacetate storage and handling
Cobalt diacetate storage conditions
Keep container tightly closed in a dry and well-ventilated place. 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 diacetate incompatible materials
Reacts with strong oxidants causing fire and explosion hazard. /Tetrahydrate ("The recommendations on this Card also apply to Cobalt (II) acetate anhydrous (CAS 71-48-7).")/
Source: Hazardous Substances Data Bank (HSDB)
Cobalt diacetate reactivity
Salts, basic, such as COBALT ACETATE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Cobalt diacetate in the storage compatibility matrix →
11 · Questions
Cobalt diacetate — frequently asked questions
What is the CAS number of Cobalt diacetate?
The CAS number of Cobalt diacetate is 71-48-7. Its EC number is 200-755-8.
What is the chemical formula of Cobalt diacetate?
The molecular formula of Cobalt diacetate is C4H6CoO4 and its molecular weight is 177.02 g/mol.
What does a Cobalt diacetate label have to show?
Under CLP Annex VI the label for Cobalt diacetate carries the pictograms Health hazard and Environment and the signal word is Danger.
Is Cobalt diacetate flammable?
CLP Annex VI assigns Cobalt diacetate 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 diacetate a carcinogen?
Yes. CLP Annex VI classifies Cobalt diacetate as a category 1A or 1B carcinogen and assigns it H350i: may cause cancer by inhalation.
What is the melting point of Cobalt diacetate?
The melting point reported for Cobalt diacetate is 140 °C (284 °F) (CAMEO).
How should Cobalt diacetate be stored?
Keep container tightly closed in a dry and well-ventilated place. 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 diacetate
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