Cobalt Chloride
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Product Code : SCL-LC-12200
Cobalt Chloride (SKU SCL-LC-12200), or cobalt(II) chloride, is an inorganic cobalt salt whose colour depends on how much water of crystallisation it holds, which makes it a moisture-indicator reagent. It also suits cobalt-salt studies, solution work and analytical methods in supervised school, college and analytical labs. Because cobalt compounds may cause sensitisation, it needs trained handling. Quotations for it are drawn up by Science Lab Supplies in Ambala, India, for schools, colleges, tender contractors and distributors.
Specifications
Both cobalt chloride forms, their CAS numbers and the hazard and storage rules appear row by row in the table. In short, the anhydrous salt is CoCl2 and the common hexahydrate is CoCl2·6H2O, which differ in colour, molecular weight and handling; the form, grade and net weight in your batch are printed on the label and quotation.
| Specification | Value |
|---|---|
| SKU | SCL-LC-12200 |
| Other names | Cobalt(II) chloride; cobaltous chloride |
| Chemical class | Inorganic cobalt(II) chloride salt |
| Formula (anhydrous) | CoCl2 |
| Formula (hexahydrate) | CoCl2·6H2O |
| CAS number (anhydrous) | 7646-79-9 |
| CAS number (hexahydrate) | 7791-13-1 |
| Colour and molecular weight | Depend on hydrate form |
| Indicator use | Colour change in controlled moisture-indicator demonstrations |
| Hazards | May cause sensitisation and asthma after repeated exposure; carcinogenic and reproductive-toxicity concerns |
| Handling | Avoid dust, ingestion, skin and eye contact; gloves, eye protection, lab coat |
| Storage | Tightly closed, labelled container in a dry chemical-storage area |
| Protect from | Moisture, contamination, heat and incompatible substances |
| Waste | Cobalt-containing chemical waste; never into drains |
| Label | Batch, grade and hydrate-form details |
| Documents | Safety Data Sheet; export documentation |
| Packing | Outer packaging with tamper seal |
| Hydrate form, grade, pack size | Confirmed on the quotation |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for Cobalt Chloride
Because the anhydrous and hydrated salts differ in colour, cobalt chloride can be used to detect water and show reversible hydration. The salt also supports transition-metal chemistry, solution preparation and analytical procedures that name cobalt chloride, always under supervision, with PPE and with controlled waste collection.
- School chemistry: the cobalt chloride test for water and reversible hydration.
- Moisture lessons that compare indicator colour with a Digital Thermo-Hygrometer reading, or show dry conditions inside a Glass Desiccator charged with a suitable drying agent.
- Class 12 chemistry: d-block elements, coloured ions and complex formation.
- B.Sc. inorganic practicals on cobalt(II) salts and equilibrium colour changes.
Standard Scope of Supply
Supplied as the cobalt chloride container in the quoted pack size, with a label giving batch, grade and hydrate form, the Safety Data Sheet, and outer packaging with a tamper seal and export documents. Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted.
Packing, MOQ and Lead Time
Quotations can be for a single pack or a multi-lab stock order, and each lists the packing, delivery time and price for the quantity stated. Other transition-metal salts and chemistry lab equipment in India can be included so one document covers the requirement.
Using its Importer-Exporter Code, Science Lab Supplies can ship to buyers in Zambia, Rwanda, South Africa, Qatar, Sri Lanka and Vietnam. Science Lab Supplies is registered for GST (GSTIN 06ADEPJ0574F2ZU). Mention the hydrate form you prefer when writing through the contact page or adding the salt to the enquiry cart; formal tenders are routed via the lab tender page.
Frequently Asked Questions
Is cobalt chloride hazardous?
Yes. It may cause sensitisation and asthma after repeated exposure and carries carcinogenic and reproductive-toxicity concerns. Handle it with gloves, eye protection and dust control, and never pour cobalt residues into drains.
Why does cobalt chloride change colour?
Its colour depends on the hydrate form, so the anhydrous salt and the hexahydrate look different. Gaining or losing water therefore shifts the colour, which is the basis of moisture-indicator demonstrations.
Who supplies the Cobalt Chloride?
Science Lab Supplies, a laboratory chemicals supplier in India with its base in Ambala, issues the quotation for this cobalt salt and confirms its hydrate form, grade and pack size before dispatch.
Can school laboratories keep cobalt chloride?
Only school or college laboratories with trained supervision, restricted storage, Safety Data Sheet access, PPE and a route for cobalt-containing waste should keep and use it.
Related Metal Salts and Drying Agents
These items fit beside cobalt chloride: further transition-metal salts for colour and complex work, hygroscopic and anhydrous salts for drying and desiccation experiments, and a gas-drying column. Any of them can be priced on the same quotation for an inorganic chemistry bench.
- Nickel Sulphate — NiSO4·6H2O, a blue to emerald-green nickel salt that may cause sensitisation.
- Cupric Chloride Lab — copper(II) chloride, also as the dihydrate of about 170.48 g/mol.
- Manganese Sulphate — manganese salt whose prolonged exposure may affect the nervous system.
- Ferric Chloride Lab Reagent — FeCl3, or the hexahydrate of about 270.29 g/mol.
- Calcium Chloride Fussed (CaCl2) — strongly hygroscopic CaCl2 that releases heat on dissolving.
- Calcium Sulphate Anhydrous — CaSO4 for drying-agent and hydrate demonstrations.
- Drying Column — 250 ml column for drying gases, with emery nozzle.
Browse the full Lab Chemicals range, the Chemistry Lab range, or all school lab equipment.
Last updated: 22 October 2026
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