MSDS Name:Cobalt powder 300 mesh 98%
Synonym:Color Index No. 77320

EMERGENCY OVERVIEW
May cause sensitization by inhalation and skin contact. May cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
Causes eye irritation. May cause conjunctivitis.
Skin:
Prolonged and/or repeated contact may cause irritation and/or dermatitis. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause allergic reaction.
Inhalation:
Causes respiratory tract irritation. May cause asthmatic attacks due to allergic sensitization of the respiratory tract. May cause asthma and shortness of breath.
Chronic:
Repeated exposure may cause sensitization dermatitis. Repeated exposure may cause allergic respiratory reaction (asthma). Chronic inhalation of dust may lead to restricted pulmonary function and interstitial fibrosis.

Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
Remove from exposure and move to fresh air immediately. Get medical aid if cough or other symptoms appear.
Notes to Physician:

General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Material can spontaneously ignite (pyrophoric) when exposed to air at normal or slightly elevated temperatures. Flammable solid.
Extinguishing Media:
Use dry sand or earth to smother fire. DO NOT USE WATER!

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.

Handling:
Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Keep container tightly closed. Avoid ingestion and inhalation.
Storage:
Keep away from sources of ignition. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.

Engineering Controls:
Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 7440-48-4: United Kingdom, WEL - TWA: 0.1 mg/m3 TWA United Kingdom, WEL - STEL: 0.3 mg/m3 STEL United States OSHA: 0.1 mg/m3 TWA (dust and fume) Belgium - TWA: 0.02 mg/m3 VLE (dust and fume) Germany: 0.5 mg/m3 TWA (inhalable fraction, production of cobalt powder and catalysts, tu Japan: 0.05 mg/m3 OEL Malaysia: 0.02 mg/m3 TWA Netherlands: 0.02 mg/m3 MAC (dust and smoke, as Co) Russia: 0.5 mg/m3 TWA (dust and/or fumes) Spain: 0.02 mg/m3 VLA-ED Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Physical State: Solid
Color: silver gray or bluish white or black
Odor: none reported
pH: Not available.
Vapor Pressure: Not applicable.
Viscosity: Not applicable.
Boiling Point: 5198 deg F
Freezing/Melting Point: 2723 deg F
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Insoluble in water.
Specific Gravity/Density: 8.92
Molecular Formula: Co
Molecular Weight: 58.9332

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, ignition sources, dust generation, strong acids, oxidizers.
Incompatibilities with Other Materials:
Pyrophoric cobalt decomposes acetylene in the cold and the metal becomes incandescent. Fused ammonium nitrate can react explosively with powdered cobalt. Pyrophoric cobal, a black powder, burns brilliantly when exposed to air.
Hazardous Decomposition Products:
Oxides of cobalt.
Hazardous Polymerization: Has not been reported.

RTECS#:
CAS# 7440-48-4: GF8750000 GF8850000 GG0375000 LD50/LC50:
CAS# 7440-48-4: Oral, rat: LD50 = 6171 mg/kg.
Carcinogenicity:
Cobalt - ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to California: carcinogen, initial date 7/1/92 (powder) IARC: Group 2B carcinogen Other:
See actual entry in RTECS for complete information.

Dispose of in a manner consistent with federal, state, and local regulations.

IATA
No information available.
IMO
No information available.
RID/ADR
No information available.

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 42/43 May cause sensitization by inhalation and
skin contact.
R 53 May cause long-term adverse effects in the
aquatic environment.
Safety Phrases:
S 22 Do not breathe dust.
S 24 Avoid contact with skin.
S 37 Wear suitable gloves.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 7440-48-4: 1
Canada
CAS# 7440-48-4 is listed on Canadas DSL List.
CAS# 7440-48-4 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7440-48-4 is listed on the TSCA inventory.