Beryllium & beryllium compounds (as Be)
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CAS
7440-41-7 (metal)
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Be (metal)
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RTECS
DS1750000 (metal)
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Synonyms & Trade Names
Beryllium metal: Beryllium
Other synonyms vary depending upon the specific beryllium compound.
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DOT ID & Guide
1566 / 154 (compounds)
1567 / 134 (powder)
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Exposure
Limits
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NIOSH REL: Ca Not to exceed 0.0005 mg/m3 See Appendix A
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OSHA PEL: TWA 0.002 mg/m3 C 0.005 mg/m3 0.025 mg/m3 [30-minute maximum peak]
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IDLH
Ca [4 mg/m3 (as Be)]
See: IDLH INDEX
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Conversion
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Physical Description
Metal: A hard, brittle, gray-white solid.
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MW: 9.0
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BP: 4532°F
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MLT: 2349°F
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Sol: Insoluble
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VP: 0 mmHg (approx)
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IP: NA
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Sp.Gr: 1.85 (metal)
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Fl.P: NA
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UEL: NA
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LEL: NA
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Metal: Noncombustible Solid in bulk form, but a slight explosion hazard in the form of a powder or dust.
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Incompatibilities & Reactivities
Acids, caustics, chlorinated hydrocarbons, oxidizers, molten lithium
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Measurement Methods
NIOSH 7102, 7300, 7301, 7303, 9102; OSHA ID125G, ID206
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: Daily
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash
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First Aid (See procedures)
Eye: Irrigate immediately
Breathing: Fresh air
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Respirator Recommendations
NIOSH
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(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
Important additional information about respirator selection
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Exposure Routes
inhalation, skin and/or eye contact
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Symptoms
Berylliosis (chronic exposure): anorexia, weight loss, lassitude (weakness, exhaustion), chest pain, cough, clubbing of fingers, cyanosis, pulmonary insufficiency; irritation eyes; dermatitis; [potential occupational carcinogen]
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Target Organs
Eyes, skin, respiratory system
Cancer Site
[lung cancer]
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See also: INTRODUCTION See ICSC CARD: 0226 See MEDICAL TESTS: 0025
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