Product Name: Cobalt (II) gluconate
Synonyms: Cobalt digluconate, Cobalt(2+) salt of gluconic acid
Chemical Formula: C12H22CoO14
CAS Number: 71957-08-9
Recommended Use: Nutritional supplements, laboratory reagent, vegan/vegetarian product support
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GHS Classification: Acute Toxicity Oral (Category 4), Skin Sensitization (Category 1), Eye Irritation (Category 2A), Carcinogenicity (Category 2)
Signal Word: Warning
Hazard Statements: Harmful if swallowed. May cause allergic skin reaction. Causes serious eye irritation. Suspected of causing cancer.
Precautionary Statements: Avoid breathing dust. Wash hands thoroughly after handling. Use only outdoors or in a well-ventilated area. Wear protective gloves and eye protection.
NFPA Ratings: Health 2, Flammability 0, Reactivity 0
Pictograms: Exclamation mark, Health hazard
Chemical Name: Cobalt (II) gluconate
Chemical Formula: C12H22CoO14
CAS Number: 71957-08-9
Concentration: 98-100% (pure grade suitable for vegan and vegetarian use)
Impurities: None identified in pharmaceutical or food-grade specification
Other Ingredients: None
Inhalation: Move affected person to fresh air. Provide oxygen or artificial respiration if breathing becomes difficult. Seek medical advice if symptoms persist.
Skin Contact: Remove contaminated clothing. Rinse skin with plenty of water using soap. Get medical attention if irritation develops.
Eye Contact: Flush with plenty of water for at least 15 minutes, lifting eyelids occasionally. Remove contact lenses if present and easy to do. Contact a physician immediately.
Ingestion: Rinse mouth thoroughly. Do not induce vomiting. Call poison center or doctor right away for further direction.
Most Important Symptoms: May cause irritation, allergic reaction, vomiting, dizziness, or gastrointestinal disruption. Prolonged contact may lead to sensitization.
Note for Medical Personnel: Treat symptomatically. Monitor for respiratory distress and treat allergic responses accordingly.
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, water spray, or foam.
Unsuitable Extinguishing Media: Direct stream of water may scatter powder and spread fire.
Special Fire Hazards: Decomposition may produce irritating or toxic fumes of carbon oxides and cobalt compounds.
Protection for Firefighters: Wear self-contained breathing apparatus and full protective gear to prevent contact with skin, eyes, and inhalation.
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, cobalt oxides
Specific Methods: Avoid stirring up dust. Cool any containers exposed to flames with plenty of water.
Personal Precautions: Evacuate area and keep unnecessary personnel away. Wear appropriate personal protective equipment including gloves, goggles, and respiratory protection.
Environmental Precautions: Prevent further leakage or spillage if safe to do so. Do not let material enter drains, waterways, or soil.
Cleaning Methods: Carefully scoop up and place in labeled waste container. Avoid dust formation. Clean contaminated surface with detergent. Ventilate area.
Disposal: Dispose collected material according to Section: Disposal Considerations.
Safe Handling: Handle in an area with adequate ventilation. Avoid creating dust. Wear personal protective equipment. Wash hands after use.
Storage Conditions: Keep container tightly closed in a cool, dry, and well-ventilated location away from incompatible materials such as strong oxidizing agents. Avoid humidity and direct sunlight.
Incompatible Materials: Avoid strong acids, bases, and oxidizers.
Specific End Uses: Nutrition supplement for vegan/vegetarian use in regulated dosages, chemical reagent.
Exposure Limits: OSHA PEL (Cobalt compounds): 0.1 mg/m³ TWA (as Co); ACGIH TLV: 0.02 mg/m³ TWA (as Co)
Engineering Controls: Use local exhaust or general dilution ventilation to control airborne dust.
Personal Protective Equipment: Respiratory protection required for mist or dust; use NIOSH-approved dust mask if needed. Wear chemical-resistant gloves, lab coat, and safety glasses with side-shields. In case of insufficient ventilation, use appropriate respirator.
Hygiene Measures: Avoid eating, drinking, or smoking during use. Wash hands and face before breaks or after handling product.
Environmental Protection: Prevent further release to the environment by using proper control measures.
Appearance: Fine violet or pinkish powder
Odor: Odorless
Odor Threshold: Not applicable
pH (1% solution): 4-6
Melting Point: Decomposes before melting
Boiling Point: Not applicable
Flash Point: Not combustible
Evaporation Rate: Not applicable
Flammability: Not flammable
Vapor Pressure: Not applicable
Vapor Density: Not applicable
Relative Density: 1.7–2.0 g/cm³ (estimated)
Solubility: Soluble in water, slightly soluble in ethanol
Partition Coefficient (n-octanol/water): No data available
Auto-ignition Temperature: Not self-igniting
Decomposition Temperature: No reliable data; compound degrades with heat
Viscosity: Not applicable
Chemical Stability: Stable under recommended storage conditions.
Reactivity: No dangerous reactions known under normal use.
Conditions to Avoid: Excess heat, moisture, light, contamination by incompatible substances.
Incompatible Materials: Strong oxidizers, strong acids, strong bases.
Hazardous Decomposition: May produce carbon oxides and cobalt oxides upon decomposition.
Polymerization: Will not occur under normal conditions.
Acute Toxicity: Harmful if swallowed (oral LD50 rat: estimated 400–600 mg/kg based on cobalt salts data).
Skin Corrosion/Irritation: May cause mild irritation; repeated contact can sensitize.
Serious Eye Damage/Irritation: May cause irritation with redness, watering.
Respiratory or Skin Sensitization: Cobalt compounds can cause allergic dermatitis and respiratory sensitization.
Germ Cell Mutagenicity: Inconclusive; some reports suggest possible mutagenicity with chronic exposure.
Carcinogenicity: IARC: Group 2B (possibly carcinogenic to humans—cobalt compounds).
Reproductive Toxicity: Potential to harm fertility or unborn child if overexposed.
Specific Target Organ Toxicity: May cause damage to heart, thyroid, and other endocrine organs with long-term exposure.
Aspiration Hazard: Not expected to present an aspiration hazard under normal use.
Chronic Effects: Chronic inhalation or ingestion may lead to cobalt accumulation and systemic toxicity.
Ecotoxicity: Toxic to aquatic organisms. May cause long-term adverse effects in the aquatic environment.
Aquatic Toxicity: LC50 (fish, 96h): Estimated 1–10 mg/L. EC50 (daphnia): Estimated 1–10 mg/L (based on cobalt salts).
Persistence and Degradability: Cobalt (II) gluconate is not readily biodegradable. Metal parts persist in soil and water.
Bioaccumulation Potential: Cobalt ions can bioaccumulate in aquatic and terrestrial organisms.
Mobility in Soil: Cobalt complexes can migrate in soil but may form stable complexes with organic matter.
Other Adverse Effects: Do not discharge into drains or environment without proper authorization.
Product Disposal: Dispose as hazardous waste in accordance with all local, regional, and national regulations. Avoid uncontrolled release to the environment.
Container Disposal: Triple-rinse containers before recycling or disposal. Containers may remain hazardous after use.
Methods of Disposal: Incinerate or landfill at properly permitted facility. Consult local environmental authority for guidance.
Contaminated Packaging: Dispose of as unused product.
Special Precautions or Considerations: Do not allow this chemical to reach sewage system or water sources. Ensure disposal practices minimize cobalt environmental release.
UN Number: Not classified as a hazardous material for transport under current regulations
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not regulated
Packing Group: Not applicable
Environmental Hazards: Avoid releasing to environment; transport in sealed, labeled containers
Special Precautions for User: Keep containers tightly sealed to prevent leakage. Follow good transport hygiene and security procedures.
U.S. (TSCA): Listed
E.U. (REACH): Registered; hazard classification applies for cobalt-containing substances
OSHA: Regulated for occupational exposure
WHMIS (Canada): Class D2A (Very Toxic Material Causing Other Toxic Effects)
California Prop. 65: Listed as a chemical known to the State of California to cause cancer
Other National Inventories: Meets requirements for use in foods and supplements in certain countries, pending purity and safety review.
Labeling: GHS-compliant, with warnings for acute toxicity and sensitization
Usage Restrictions: Subject to limits for supplement and food use; consult relevant food safety authority.
Further Regulatory Notes: Keep current with updates from agencies such as FDA, EPA, ECHA, and local environmental/occupational health authorities.