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Cobalt Octoate
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Cobalt Octoate is a liquid metal drying agent solution consisting of 10% cobalt octoate dissolved in an organic solvent carrier (typically mineral spirits or similar hydrocarbon solvent). It functions as a highly efficient catalyst to accelerate the oxidative curing and drying of alkyd resins, oils, and varnishes in coatings and paints. By promoting cross-linking and polymerization of unsaturated fatty acids in drying oils upon exposure to oxygen, it significantly reduces drying time and enhances film hardness, gloss, and durability. Cobalt Octoate 10% is widely used in industrial and decorative coatings, inks, and adhesives, valued for its strong catalytic activity even at low concentrations.
Description
Cobalt Octoate Uses
Primary UsesÂ
- Paints, Coatings & Varnishes
- Used as a drying catalyst in oil-based paints, alkyd resin paints, enamels, varnishes, and lacquers.
- Accelerates oxidative drying of drying oils such as linseed oil, tung oil, and soya oil.
- Enhances drying speed, film hardness, gloss, and chemical resistance of coatings.
- Enables faster production and handling times in industrial and commercial painting applications.
- Printing Inks
- Incorporated in oxidative drying printing inks to improve drying rate and tack-free time on substrates like paper, metal, and plastic.
- Enhances adhesion and surface finish quality.
- Adhesives & Sealants
- Used in formulations where drying and curing of unsaturated oil-based resins or adhesives is required.
- Improves set times and bonding durability.
Secondary UsesÂ
- Wood Finishing
- Added to wood stains, oils, and lacquers to accelerate drying and improve surface hardness and protection.
- Artistic Oil Paint Mediums
- Employed in oil painting mediums by artists to reduce drying time without compromising finish or color integrity.
- Polymer & Resin Chemistry
- Acts as a catalyst in cross-linking reactions of certain resins beyond traditional coatings.
- Metal Treatments
Used in specialty protective metal coatings and drying formulations to promote faster curing.
PRODUCT KEY FEATURES
1. Basic Identification Attributes
- Chemical Name (IUPAC): Cobalt(II) 2-ethylhexanoate (solution)
- Common/Trade Name: Cobalt Octoate 10%
- CAS Number: 136-52-7 (for pure cobalt octoate)
- HS Code: 2915.70.00
- Molecular Formula: Variable (complex cobalt salt solution)
- Synonyms:
- Cobalt 2-ethylhexanoate
- Cobalt octanoate solution
2. Physical & Chemical Properties
- Physical State: Liquid solution
- Color & Odor: Amber to reddish-brown; characteristic solvent odor
- Melting/Freezing Point: Not applicable (liquid)
- Boiling Point: Approx. 230–270°C (dependent on solvent)
- Density: ~1.0–1.1 g/cm³
- Solubility:
- Soluble in organic solvents such as mineral spirits, aromatic hydrocarbons, ketones
- Insoluble in water
- Stability: Stable under normal conditions; sensitive to strong acids and bases
3. Safety & Hazard Attributes
- Hazard Class (GHS):
- Harmful if swallowed or inhaled
- Skin and respiratory sensitizer
- May cause allergic skin reactions
- Toxic to aquatic life with long-lasting effects
- NFPA Ratings:
- Health: 2
- Flammability: 2
- Reactivity: 0
- Exposure Limits: No specific OSHA PEL; cobalt compounds generally limited to 0.1 mg/m³ (TWA)
- Toxicity: May cause skin and respiratory sensitization; chronic exposure can lead to lung effects and cobalt-related health risks
- Reactivity: Stable; avoid contact with strong oxidizers and acids
4. Storage & Handling Attributes
- Storage Conditions: Store in tightly sealed containers in a cool, dry, well-ventilated area away from heat, sparks, and ignition sources
- Container Type: Metal or plastic drums with secure seals
- Shelf Life: Typically 1–2 years if stored properly
- Special Handling:
- Use explosion-proof equipment and grounding to prevent static discharge
- Avoid skin and eye contact; ensure adequate ventilation
5. Regulatory & Compliance Attributes
- FDA Status: Not approved for food or pharmaceutical use
- REACH Status: Registered as a cobalt compound under EU chemical safety regulations
- Transportation: Classified as flammable liquid (due to solvent content) and hazardous material for transport
- Waste Disposal: Dispose of as hazardous waste according to local regulations
6. Environmental & Health Impact
- Ecotoxicity: Toxic to aquatic organisms; avoid environmental release
- Persistence: May persist in soils and sediments due to cobalt content
- Bioaccumulation: Low potential
- Carcinogenicity/Mutagenicity: Cobalt compounds classified as possible carcinogens (IARC Group 2B)
Biodegradability: Organic solvents biodegradable; cobalt metal is elemental and persistent
SAFETY HANDLING PRECAUTIONS
-
Safety Handling Precautions
Personal Protective Equipment (PPE):
- Chemical-resistant gloves
- Safety goggles or face shield
- Respirator if ventilation is insufficient
- Protective clothing
Handling Measures:
- Avoid inhalation and skin contact
- Use in well-ventilated areas or fume hoods
- Prevent environmental release
Storage Measures:
- Store away from heat, sparks, and open flames
- Keep container tightly closed
- Ground and bond containers during transfer
Hygiene Practices:
- Wash hands thoroughly after handling
- Do not eat, drink, or smoke in handling areas
First Aid Measures
- Inhalation: Move to fresh air; if breathing is difficult, provide oxygen and seek medical attention
- Skin Contact: Wash with soap and water; seek medical advice if irritation or allergy develops
- Eye Contact: Rinse with plenty of water for 15 minutes; seek medical care if irritation persists
- Ingestion: Do not induce vomiting; seek emergency medical assistance immediately
Firefighting Measures
- Fire Hazards: Flammable due to organic solvent carrier; cobalt salts themselves are not combustible
- Extinguishing Media: Foam, dry chemical, carbon dioxide (COâ‚‚)
- Special Precautions: Firefighters should wear full protective gear and self-contained breathing apparatus
- Decomposition Products: May release cobalt oxides, carbon monoxide, carbon dioxide, and solvent vapors upon burning
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