Molekula
Cobalt(II) chloride
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Cobalt(II) chloride is an inorganic salt primarily used in drying agents, catalysts, and as a colorant in ceramics and paints due to its blue-to-pink color change with hydration. It serves as a moisture indicator and is applied in laboratory settings, electroplating, and analytical chemistry. Cobalt(II) chloride has the CAS number 7646-79-9, with the molecular formula CoCl₂ and a molecular weight of 129.84 g/mol. It is stored at ambient conditions and requires careful handling, marked with a **Danger** signal word for toxicity and corrosivity. Molekula supplies Cobalt(II) chloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £65.00 per pack ex VAT · £78.00 inc. VAT
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500 g — £190.00 per pack ex VAT · £228.00 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Blue Solid |
| Iron (Fe) | ≤0.03% |
| Lead (Pb) | ≤0.003% |
| Identification (IR) | Conforms to Reference |
| Arsenic (As) | ≤0.003% |
| Copper (Cu) | ≤0.003% |
| Nickel (Ni) | ≤0.003% |
| Manganese (Mn) | ≤0.003% |
| Cobalt (Co) | ≥43% |
| Sulphates (SO4)(2-) | ≤0.03% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Blue hexagonal leaflets |
| Odour | Slight sharp odor |
| Melting Point | 735 °C |
| Boiling Point | 1049 °C |
| Water Solubility | Soluble in water |
| Solubility (other solvents) | Soluble in alcohols, acetone, ether, glycerol, and pyridine |
| Vapour Pressure | 75 mmHg at 818 °C |
Source: PubChem CID 3032536 (HSDB, PAC Chemical Database)
Identification
| Property | Value |
|---|---|
| SKU | 90028675 |
| CAS Number | 7646-79-9 |
| IUPAC Name | cobalt(2+) dichloride |
| EC Number | 231-589-4 |
| Molecular Formula | CoCl2 |
| Molecular Weight | 129.84 |
| Exact Mass | 128.8709 |
| SMILES | [Cl-].[Cl-].[Co+2] |
| InChIKey | GVPFVAHMJGGAJG-UHFFFAOYSA-L |
| InChI | InChI=1S/2ClH.Co/h2*1H;/q;;+2/p-2 |
| PubChem CID | 3032536 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28273960 |
| Tariff Code | 2827393000 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H317 May cause an allergic skin reaction
- H318 Causes serious eye damage
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H341 Suspected of causing genetic defects
- H350i May cause cancer by inhalation
- H360F May damage fertility
- H373 May cause damage to organs through prolonged or repeated exposure
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Cobalt dichloride
- Cobalt dichloride (cocl2)
- Cobalt muriate
- Cobalt(2+) chloride
- Cobaltous chloride anhydrous
- Cobaltous dichloride
- Cobaltum muriaticum
- CoCl(2)
- Dichlorocobalt
- Kobalt chlorid
Frequently asked questions
What is cobalt(II) chloride commonly used for?
Cobalt(II) chloride is primarily used as a drying agent, in humidity indicators (e.g., cobalt chloride paper), and as a catalyst in chemical reactions. It also finds applications in electroplating, pigments, and as a nutrient in culture media.
What is the molecular formula and molecular weight of cobalt(II) chloride?
The molecular formula is **CoCl₂**, and the molecular weight is **129.84 g/mol** (anhydrous form).
What is the signal word and safety classification for cobalt(II) chloride?
The signal word is **Danger**, indicating it is hazardous due to its toxicity and corrosive properties.
How should cobalt(II) chloride be stored?
Store cobalt(II) chloride in a **cool, dry place at ambient temperature**, away from incompatible substances like oxidizing agents, and ensure proper sealing to prevent moisture absorption.
What grades of cobalt(II) chloride does Molekula supply?
Molekula supplies cobalt(II) chloride in **technical/industrial grade** and **laboratory reagent grade** (ACS or analytical standards).
Can Molekula supply cobalt(II) chloride in bulk quantities?
Yes, Molekula can supply cobalt(II) chloride in **bulk quantities** (e.g., 5 kg, 25 kg, or larger), depending on availability and customer requirements.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.