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Cobalt Chloride Dihydrate is a widely used industrial product that finds its applications in various fields. The product is a greenish-brown crystalline powder, soluble in water, and has excellent moisture-absorbing properties. It is a chemical compound made up of Cobalt, Chlorine, and Water, i.e., CoCl2•2H2O, with a molecular weight of 129.84 g/mol. This article will provide an in-depth product introduction that highlights the salient features, properties, and applications of Cobalt Chloride Dihydrate to attract merchants looking to source this product.
| Quantity: | |
|---|---|
Co36%
W&Q
1. Molecular Formula: CoCl2•2H2O
2. CAS NO.: 16544-92-6
3. Molecular Weight:165.9
4. Property: Violet-blue powder.Denisty: 2.48g/cm3
5. Sepcification(%):
Co | 36min |
Fe | 0.002max |
Ni | 0.002max |
As | 0.002max |
Pb | 0.002max |
Cu | 0.002max |
Mn | 0.002max |
SO4 | 0.02max |
W.I.M | 0.02max |
Cobalt Chloride Dihydrate is a moisture-reactive compound with a molecular weight of 165.9g/mol and a density of 2.48g/cm³. Its most notable trait is its color-changing ability: when dry, it appears violet-blue, and upon absorbing moisture, it shifts to purple—making it an ideal humidity indicator. It is highly soluble in water, thermally stable, and low in toxicity, ensuring safe use in industrial and consumer applications.
Our product meets strict specifications: cobalt (Co) content is a minimum of 36%, while impurities like iron (Fe), nickel (Ni), arsenic (As), lead (Pb), and copper (Cu) are each capped at 0.002max. Sulfate (SO₄) and W.I.M (Water-Insoluble Matter) are limited to 0.02max, ensuring compatibility with sensitive processes like nylon production or ceramic glazing.
• Moisture-Sensing Precision: Its color-changing property (blue to purple) provides real-time humidity feedback—critical for monitoring shipping containers, air conditioning systems, or silica gel desiccants.
• High Thermal Stability: It maintains performance even at elevated temperatures, making it suitable for industrial drying processes (e.g., ethanol dehydration) or high-heat ceramic production.
• Low Toxicity & Safety: With minimal harmful impurities, it is safe for use in consumer-related applications (e.g., humidity indicators in food packaging) and industrial settings alike.
• Multi-Industry Utility: It acts as a catalyst, drying agent, pigment, and electroplating component—reducing the need for multiple chemicals and simplifying your supply chain.
• Consistent Purity: 36% minimum Co content ensures reliable performance in every use case, from nylon polymerization to cobalt electroplating baths.
Cobalt Chloride Dihydrate’s versatility shines across five key applications:
• Humidity Indicator: Integrated into silica gel packets or industrial sensors, it monitors moisture levels in shipping containers (to protect electronics or pharmaceuticals), indoor spaces, and HVAC systems—preventing mold or corrosion.
• Chemical Catalyst: In nylon production, it acts as a condensation catalyst for hexamethylenediamine and adipic acid polymerization, speeding up reaction times and improving polymer quality.
• Drying Agent: Used alone or with other desiccants, it dehydrates ethanol, alcohols, and gas circuits—keeping industrial equipment and solvents free from moisture damage.
• Ceramic Pigment: It imparts vibrant blue tones to ceramic glazes, enhancing the appearance of tiles, tableware, and decorative ceramics without fading over time.
• Electroplating: As a key component in cobalt plating baths, it ensures uniform metal deposition on parts (e.g., automotive components, hardware), boosting corrosion resistance and durability.
• Feed & Pharma: It also serves as a feed additive (supporting livestock health) and a raw material in medicaments—expanding its utility beyond industrial use.
Its crystal structure absorbs moisture from the air, triggering a chemical change that shifts its color from violet-blue (dry) to purple (moist). The intensity of the color change corresponds to humidity levels, providing a visual, low-cost way to monitor moisture.
Yes. Its low toxicity (impurities like Pb and As at 0.002max) makes it safe for use in humidity indicators for food, pharmaceutical, or cosmetic packaging—complying with global safety standards.
We supply Cobalt Chloride Dihydrate in 25kg bags, stacked on pallets (40 bags per 1000kg pallet). This packaging ensures easy storage, handling, and protection against moisture during transit.
• Specialized Cobalt Expertise: We focus exclusively on cobalt products, bringing deep knowledge of Cobalt Chloride Dihydrate’s applications and quality requirements.
• Continuous Innovation: We invest in R&D to improve product performance—from enhancing moisture-sensing speed to reducing impurities—keeping you ahead of industry trends.
• Customer-Centric Improvements: We refine our product based on your feedback, ensuring it aligns with your specific needs (e.g., custom purity levels for unique catalysts).
• Global Reach: Our products are exported worldwide, with a track record of meeting diverse regional standards (e.g., EU REACH, US FDA) for safety and quality.
• Efficient Logistics: We offer timely delivery of palletized orders, with UN 3077 compliance for safe international shipping (CLASS 9 hazardous goods).
