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| Yttrium | CAS 7440-65-5 | ||
| Y | RTECS ZG2980000 | ||
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Synonyms & Trade Names Yttrium metal |
DOT ID & Guide |
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Exposure Limits |
NIOSH REL*: TWA 1 mg/m3 [*Note: The REL also applies to other yttrium compounds (as Y).] | ||
| OSHA PEL*: TWA 1 mg/m3 [*Note: The PEL also applies to other yttrium compounds (as Y).] | |||
| IDLH 500 mg/m3 (as Y) See: 7440655 | Conversion | ||
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Physical Description Dark-gray to black, odorless solid. |
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MW: 88.9 |
BP: 5301°F |
MLT: 2732°F |
Sol: Soluble in hot H2O |
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VP: 0 mmHg (approx) |
IP: NA |
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Sp.Gr: 4.47 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Solid in bulk form. | |||
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Incompatibilities & Reactivities Oxidizers |
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Measurement Methods NIOSH 7300, 7301, 7303, 9102; OSHA ID121 See: NMAM or OSHA Methods |
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Personal Protection & Sanitation Skin: No recommendation Eyes: No recommendation Wash skin: No recommendation Remove: No recommendation Change: No recommendation |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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Important additional information about respirator selection Respirator Recommendations NIOSH/OSHA Up to 5 mg/m3: (APF = 5) Any dust and mist respirator Up to 10 mg/m3: (APF = 10) Any dust and mist respirator except single-use and quarter-mask respirators/(APF = 10) Any supplied-air respirator Up to 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 Up to 50 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and 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 500 mg/m3: (APF = 1000) Any supplied-air respirator 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 Irritation eyes; in animals: pulmonary irritation; eye injury; possible liver damage | |
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Target Organs
Eyes, respiratory system, liver |
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| See also: INTRODUCTION |