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| Cobalt metal dust and fume (as Co) | CAS 7440-48-4 | ||
| Co | RTECS GF8750000 | ||
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Synonyms & Trade Names Cobalt metal dust, Cobalt metal fume |
DOT ID & Guide |
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Exposure Limits |
NIOSH REL: TWA 0.05 mg/m3 | ||
| OSHA PEL�: TWA 0.1 mg/m3 | |||
| IDLH 20 mg/m3 (as Co) | Conversion | ||
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Physical Description Odorless, silver-gray to black solid. |
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MW: 58.9 |
BP: 5612°F |
MLT: 2719°F |
Sol: Insoluble |
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VP: 0 mmHg (approx) |
IP: NA |
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Sp.Gr: 8.92 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Solid in bulk form, but finely divided dust will burn at high temperatures. | |||
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Incompatibilities & Reactivities Strong oxidizers, ammonium nitrate |
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Measurement Methods NIOSH 7027, 7300; OSHA ID121, ID125G, ID213 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: No recommendation Wash skin: When contaminated Remove: When wet or contaminated Change: Daily |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash Breathing: Respiratory support Swallow: Medical attention immediately |
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Respirator Recommendations
NIOSH Up to 0.25 mg/m3: (APF = 5) Any dust and mist respirator^ Up to 0.5 mg/m3: (APF = 10) Any dust and mist respirator except single-use and quarter-mask respirators*^/(APF = 10) Any dust, mist, and fume respirator*/(APF = 10) Any supplied-air respirator* Up to 1.25 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*/(APF = 25) Any powered, air-purifying respirator with a dust and mist filter*^/(APF = 25) Any powered, air-purifying respirator with a dust, mist, and fume filter* Up to 2.5 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Up to 20 mg/m3: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Cough, dyspnea (breathing difficulty), wheezing, decreased pulmonary function; weight loss; dermatitis; diffuse nodular fibrosis; respiratory hypersensitivity, asthma | |
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Target Organs
Skin, respiratory system |
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| See also: INTRODUCTION |