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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
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NIOSH REL: TWA 0.05 mg/m3 | ||
| OSHA PEL†: TWA 0.1 mg/m3 | |||
| IDLH 20 mg/m3 (as Co) See: 7440484 | 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, 7301, 7303, 9102; OSHA ID121, ID125G, ID213 See: NMAM or OSHA Methods |
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Personal Protection & Sanitation (See protection) 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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Important additional information about respirator selection Respirator Recommendations NIOSH Up to 0.25 mg/m3: (APF = 5) Any quarter-mask respirator. Click here for information on selection of N, R, or P filters. Up to 0.5 mg/m3: (APF = 10) Any particulate respirator equipped with an N95, R95, or P95 filter (including N95, R95, and P95 filtering facepieces) except quarter-mask respirators. The following filters may also be used: N99, R99, P99, N100, R100, P100. Click here for information on selection of N, R, or P filters.* (APF = 10) Any particulate respirator equipped with an N95, R95, or P95 filter (including N95, R95, and P95 filtering facepieces) except quarter-mask respirators. The following filters may also be used: N99, R99, P99, N100, R100, P100. Click here for information on selection of N, R, or P filters.* (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 high-efficiency particulate filter.* (APF = 25) Any powered air-purifying respirator with a high-efficiency particulate filter.* Up to 2.5 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters. (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 an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./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 See ICSC CARD: 0782 See MEDICAL TESTS: 0055 |