Product Name: Cobalt(II) gluconate hydrate
Chemical Formula: C12H22CoO14·xH2O
CAS Number: 234-250-6
Synonyms: Gluconic acid, cobalt(2+) salt, hydrate; Cobalt gluconate
Recommended Use: Industrial applications, research and scientific use, dietary mineral supplements (trace amounts)
Supplier Contact: Manufacturer or distributor information and emergency phone number should be included on shipping documentation
GHS Classification: Acute toxicity (oral, dermal, inhalation) - Category 4; Respiratory sensitization - Category 1; Skin sensitization - Category 1; Carcinogenicity - Category 2
Signal Word: Warning
Hazard Statements: Harmful if swallowed; May cause allergy or asthma symptoms or breathing difficulties if inhaled; May cause an allergic skin reaction; Suspected of causing cancer
Pictograms: Exclamation mark, health hazard
Precautionary Statements: Avoid breathing dust, wear protective gloves and respiratory protection, wash hands thoroughly after handling, do not eat, drink, or smoke when using this product
Emergency Overview: Blue or pink solid, dust can irritate mucous membranes, potentially hazardous if ingested or inhaled in significant amounts, restricted for food use due to potential toxicity
Cobalt(II) gluconate hydrate: 98–100%
CAS Number: 234-250-6
Impurities: Contains trace levels of other metal salts or hydrates depending on manufacturing batch
EC Number: 235-912-0
Molecular Weight: 406.23 g/mol (anhydrous basis, degree of hydration varies by source)
General Advice: Remove source of exposure, get medical attention if you feel unwell or symptoms persist
Inhalation: Move to fresh air, keep at rest in a position comfortable for breathing, seek medical attention if breathing problems develop
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, seek medical help if irritation or sensitization appears
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses, continue rinsing, obtain medical attention
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical advice
Most important symptoms/effects: Allergic reactions, breathing difficulties, nausea, possible long-term effects from repeated exposure such as lung or skin sensitization
Suitable Extinguishing Media: Water spray, dry powder, carbon dioxide, foam
Unsuitable Extinguishing Media: Do not use high-pressure water stream
Special Hazards: Thermal decomposition releases toxic fumes containing cobalt oxides and carbon monoxide
Protective Equipment: Firefighters use self-contained breathing apparatus and protective clothing, evacuate area if large fire breaks out
Advice for Firefighters: Keep containers cool by spraying water, prevent runoff from entering drains, fight fire from upwind position
Personal Precautions: Wear gloves, safety goggles, and dust respirator, avoid creating dust
Environmental Precautions: Prevent from entering drains, surface water, soil, or sewers
Cleanup Methods: Collect spillage mechanically using shovel or vacuum with HEPA filter, place in suitable container for disposal
Additional Precautions: Provide adequate ventilation, restrict access to spill area until cleanup is complete, follow local disposal regulations
Handling: Work in well-ventilated area, avoid contact with skin and eyes, avoid inhaling dust, wear appropriate protective equipment, keep away from sources of ignition
Storage Conditions: Store tightly sealed in original packaging, away from incompatible materials such as strong acids or oxidizers, keep in cool, dry, and well-ventilated place
Special Precautions: Clearly label containers, restrict access to trained personnel, do not reuse empty containers without decontamination
Exposure Limits: OSHA PEL for cobalt compounds: 0.1 mg/m3 TWA (as Co); ACGIH TLV: 0.02 mg/m3 TWA inhalable fraction (as Co)
Engineering Controls: Use local exhaust ventilation, process enclosures, or other engineering controls to maintain airborne levels below recommended exposure limits
Eye Protection: Chemical splash goggles or safety glasses with side shields
Hand Protection: Protective gloves resistant to chemical exposure (nitrile or neoprene)
Respiratory Protection: Dust mask or respirator fitted with particulate filter (N95 or P100) for potentially dusty operations
Skin Protection: Protective clothing or lab coat, closed shoes
Appearance: Blue or pink crystalline powder or solid
Odor: Slightly sweet or odorless
Odor Threshold: Not determined
Molecular Weight: 406.23 g/mol (anhydrous)
pH: 5–7 (10% aqueous solution)
Melting Point/Freezing Point: Decomposes before melting
Boiling Point/Range: Not applicable (decomposition occurs)
Flash Point: Not flammable
Evaporation Rate: Not determined
Flammability: Not flammable
Vapor Pressure: Not applicable
Vapor Density: Not applicable
Relative Density: About 1.8–2.2 g/cm3
Solubility: Soluble in water, sparingly soluble in alcohol
Partition Coefficient (n-octanol/water): Not determined
Decomposition Temperature: >200°C
Viscosity: Not applicable
Chemical Stability: Stable under recommended storage conditions
Reactivity: No hazardous reactions under normal conditions
Conditions to Avoid: Excessive heat, formation of dust, exposure to strong acids or oxidizing agents
Incompatible Materials: Strong oxidizers, strong acids, reactive metals
Hazardous Decomposition Products: Cobalt oxides, carbon oxides, toxic fumes during thermal decomposition
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Harmful if swallowed (LD50 rat: >300 mg/kg), slight toxicity when inhaled or absorbed through skin in large amounts
Chronic Effects: Can produce allergic skin and respiratory reactions, repeated exposure linked to lung effects and sensitization, possible reproductive toxicity
Carcinogenicity: Classified as possibly carcinogenic to humans (IARC 2B)
Sensitization: May cause asthma or other allergic reactions after repeated or prolonged exposure
Target Organs: Respiratory system, skin, heart, thyroid
Additional Health Data: Occupational asthma, dermatitis, long-term overexposure may impact red blood cell formation and neurological function
Ecotoxicity: Toxic to aquatic life at moderate concentrations, with possible long-term effects
Aquatic Toxicity: LC50 (fish, 96h): 0.6 mg/L (as Co2+); EC50 (daphnia, 48h): 1.1 mg/L
Persistence and Degradability: Not readily biodegradable
Bioaccumulative Potential: Cobalt ions can bioaccumulate in aquatic organisms
Mobility in Soil: Moderately mobile, can leach into groundwater under acidic conditions
Other Adverse Effects: No known effects on ozone layer, but improper release harms local water ecosystems and food chains
Waste Treatment Methods: Treat as hazardous chemical waste, avoid discharge into environment or sewer system
Disposal Containers: Use UN-approved containers or drums clearly labeled as hazardous
Recommended Disposal: Transfer to permitted chemical waste facility, incinerate or landfill in accordance with local, regional, and national regulations
Special Precautions: Do not attempt to neutralize or dispose without trained personnel, prevent skin contact and inhalation during disposal
Contaminated Packaging: Must be decontaminated or disposed as hazardous waste
UN Number: Not regulated for transport
Proper Shipping Name: Not determined as dangerous under most transport regulations
Transport Hazard Class: Not classified
Packing Group: Not regulated
EMS Code: Not applicable
Environmental Hazards: Not a marine pollutant per international transport standards, but caution strongly advised to avoid aquatic contamination
OSHA: Hazardous chemical under OSHA Hazard Communication Standard
SARA Title III: Listed as a hazardous substance, subject to reporting requirements
TSCA: Substance listed in TSCA Inventory
REACH: Registered under EC 1907/2006, certain uses may be restricted under Annex XVII
California Proposition 65: Listed as a chemical known to the State of California to cause cancer
Other International Regulations: Subject to workplace health and safety controls in Canada, EU, Australia, Japan and other industrial regions; check all regional or local workplace regulations before use
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