Cobalt Powder







Product Name:    Cobalt Powder

Formula:              Co

Supplier:              ESPI Metals

                            1050 Benson Way

                            Ashland, OR 97520

Telephone:          800-638-2581

Fax:                     541-488-8313

Email:                  This email address is being protected from spambots. You need JavaScript enabled to view it.

Emergency:         Infotrac 800-535-5053 (US) or 352-323-3500 (24 hour)

Recommended Uses:  Scientific Research




GHS Classification (29 CFR 1910.1200):  Flammable solids, category 2, Sensitization - respiratory, category 1B, Sensitization - skin, category 1B.

GHS Label Elements:


Signal Word:  Danger

Hazard Statements:  H228 Flammable solid, H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled, H317 May cause an allergic skin reaction.

Precautionary Statements:  P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking, P260 Do not breath dust, P272 Contaminated clothing should not be allowed out of the workplace, P280 Wear protective gloves/protective clothing/eye protection/face protection, P285 In case of inadequate ventilation wear respiratory protection, P304+P341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing, P342+P311 IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician, P302+P352 IF ON SKIN: wash with plenty of soap and water, P333+P313 If skin irritation or rash occurs: Get medical advice/attention, P363 Wash contaminated clothing before reuse, P501 Dispose of contents/container in accordance with local, state or federal regulations.




Ingredient:          Cobalt

CAS#:                   7440-48-4

%:                        >99

EC#:                     231-158-0




General Measures: Remove patient from area of exposure.

INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Seek medical attention.

INGESTION: Quickly wipe material from mouth and rinse with water. Do not induce vomiting. Seek medical attention.

SKIN: Remove contaminated clothing, brush material off skin, wash affected area with soap and water. Seek medical attention if symptoms persist.

EYES: Flush eyes with lukewarm water, including under upper and lower eyelids, for at least 15 minutes. Seek medical attention if symptoms persist.

Most Important Symptoms/Effects, Acute and Delayed: May cause irritation. May cause an allergic reaction. See section 11 for more information.

Indication of Immediate Medical Attention and Special Treatment: No other relevant information available.




Extinguishing Media: Use Class D or other metal extinguishing agent.

Unsuitable Extinguishing Media: No information available.

Specific Hazards Arising from the Material: Fine dust dispersed in air in sufficient concentrations, and in the presence of an ignition source, is a potential dust explosion hazard. May emit fumes of cobalt oxide under fire conditions.

Special Protective Equipment and Precautions for Firefighters: Full face, self-contained breathing apparatus and full protective clothing to prevent contact with skin and eyes.




Personal Precautions, Protective Equipment, and Emergency Procedures: Wear appropriate respiratory and protective equipment specified in section 8. Isolate spill area and provide ventilation. Avoid breathing dust or fume. Avoid contact with skin and eyes. Eliminate all sources of ignition.

Methods and Materials for Containment and Cleaning Up: Avoid creating dust. Use only non-sparking tools and natural bristle brushes. Scoop or vacuum up spill using a vacuum rated for combustible metal dusts equipped with a HEPA filter. Place in properly labeled closed containers.

Environmental Precautions: Do not allow to enter drains or to be released to the environment.




Precautions for Safe Handling: Transfer material in closed systems or within a completely hooded containment with local exhaust ventilation. Prevent spillage. Protect from sources of ignition. Avoid breathing dusts. Avoid contact with skin and eyes. Prevent contact with clothing. Wear gloves when handling this product. Wash thoroughly before eating or smoking. See section 8 for information on personal protection equipment.

Conditions for Safe Storage, Including Any Incompatibilities: Store in a sealed container. Store in a cool, dry area. Storage containers should be labeled to indicate their contents. Protect from acids. Store away from heat and ignition sources. See section 10 for more information on incompatible materials.




Exposure Limits:     Cobalt

OSHA/PEL:               0.1 mg/m3

ACGIH/TLV:             0.02 mg/m3

Appropriate Engineering Controls: When working with finely divided powders, handle in a controlled, enclosed environment, preferably under argon. Ensure adequate ventilation to maintain exposures below occupational limits. Whenever possible the use of local exhaust ventilation or other engineering controls is the preferred method of controlling exposure to airborne dust and fume to meet established occupational exposure limits. Use good housekeeping and sanitation practices. Do not use tobacco or food in work area. Wash thoroughly before eating or smoking. Do not blow dust off clothing or skin with compressed air.

Individual Protection Measures, Such as Personal Protective Equipment:

Respiratory Protection: Wear approved respirator.

Eye Protection: Safety glasses or goggles

Skin Protection: Wear impermeable gloves, protective work clothing.





Form:                    Powder

Color:                    Gray to black

Odor:                     Not determined

Odor Threshold:   Not determined

pH:                                              N/A

Melting Point:                             1495 oC

Boiling Point:                              2870 oC

Flash Point:                                 N/A

Evaporation Rate:                       N/A

Flammability:                              No data

Upper Flammable Limit:             No data

Lower Flammable Limit:             No data

Vapor Pressure:                          No data

Vapor Density:                            N/A

Relative Density (Specific Gravity):     8.92 g/cc

Solubility in H2O:                        Insoluble

Partition Coefficient (n-octanol/water):   Not determined

Autoignition Temperature:         No data

Decomposition Temperature:     No data

Viscosity:                                     N/A




Reactivity: No data

Chemical Stability: Stable under recommended storage conditions.

Possibility of Hazardous Reactions: Contact with acids generate flammable hydrogen gas.

Conditions to Avoid: Heat, sparks, flame. Dusting conditions.

Incompatible Materials: Acids

Hazardous Decomposition Products: Cobalt oxides, hydrogen gas.




Likely Routes of Exposure: Inhalation, skin and eyes.

Symptoms of Exposure: May cause irritation. May cause an allergic reaction in sensitized individuals.

Acute and Chronic Effects: Acute exposure to cobalt metal dusts or fumes is characterized by irritation to the eyes, and to a lesser extent, irritation to the skin. Chronic exposure to cobalt metal dust or fumes may cause respiratory and dermatologic signs and symptoms. Chronic exposure to cobalt by inhalation in humans results in effects on the respiratory system, such as respiratory irritation, wheezing, asthma, decreased lung function, pneumonia, and fibrosis.

Acute Toxicity: LD50 Oral - rat - 6,171mg/kg

Carcinogenicity: NTP: Not identified as carcinogenic   IARC: 2B - Possibly carcinogenic to humans

To the best of our knowledge the chemical, physical and toxicological characteristics of the substance are not fully known.




Ecotoxicity: No data

Persistence and Degradability: No data

Bioaccumulative Potential: No data

Mobility in Soil: No data

Other Adverse Effects: Do not allow material to be released to the environment. No further relevant information available.




Waste Disposal Method:

Product: Dispose of in accordance with Federal, State and Local regulations.

Packaging: Dispose of in accordance with Federal, State and Local regulations.




UN Number:                          UN3089

UN Proper Shipping Name:   Metal powder, flammable, n.o.s., (Cobalt)

Transport Hazard Class:       4.1

Packing Group:                      II

Marine Pollutant:                   No




TSCA Listed:  All components are listed.

Regulation (EC) No 1272/2008 (CLP):  Flammable solids, category 2, Sensitization - respiratory, category 1, Sensitization - skin, category 1.

Canada WHMIS Classification (CPR, SOR/88-66): Flammable solids, Respiratory or skin sensitization.

HMIS Ratings: Health: 1     Flammability: 2     Physical: 0

NFPA Ratings: Health: 1     Flammability: 2     Instability: 0

Chemical Safety Assessment: A chemical safety assessment has not been carried out.




The information contained in this document is based on the state of our knowledge at the time of publication and is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide. ESPI Metals makes no representation, warranty, or guarantee of any kind with respect to the information contained in this document or any use of the product based on this information. ESPI Metals shall not be held liable for any damages resulting from handling or from contact with the above product. Users should satisfy themselves that they have all current data relevant to their particular use.


Prepared by:             ESPI Metals

Revised/Reviewed:   July 2015


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