Lithium hydride
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CAS
7580-67-8
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LiH
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RTECS
OJ6300000
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Synonyms & Trade Names
Lithium monohydride
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DOT ID & Guide
1414 138
2805 138 (fused, solid)
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Exposure
Limits
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NIOSH REL: TWA 0.025 mg/m3
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OSHA PEL: TWA 0.025 mg/m3
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IDLH
0.5 mg/m3
See: 7580678
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Conversion
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Physical Description
Odorless, off-white to gray, translucent, crystalline mass or white powder.
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MW: 7.95
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BP: Decomposes
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MLT: 1256°F
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Sol: Reacts
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VP: 0 mmHg (approx)
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IP: NA
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Sp.Gr: 0.78
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Fl.P: NA
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UEL: NA
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LEL: NA
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Combustible Solid that can form airborne dust clouds which may explode on contact with flame, heat, or oxidizers.
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Incompatibilities & Reactivities
Strong oxidizers, halogenated hydrocarbons, acids, water [Note: May ignite SPONTANEOUSLY in air and may reignite after fire is extinguished. Reacts with water to form hydrogen & lithium hydroxide.]
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Measurement Methods
OSHA ID121
See: NMAM or OSHA Methods
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Personal Protection & Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: Brush (DO NOT WASH)
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash, Quick drench (>0.5 mg/m3)
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Brush (DO NOT WASH)
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH/OSHA
Up to 0.25 mg/m3:
(APF = 10) Any air-purifying respirator with an N100, R100, or P100 filter (including N100, R100, and P100 filtering facepieces) except quarter-mask respirators. Click here for information on selection of N, R, or P filters.
(APF = 10) Any supplied-air respirator
Up to 0.5 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(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 = 25) Any powered, air-purifying 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
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
Important additional information about respirator selection
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin; eye, skin burns; mouth, esophagus burns (if ingested); nausea; muscle twitches; mental confusion; blurred vision
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Target Organs
Eyes, skin, respiratory system, central nervous system
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See also: INTRODUCTION
See ICSC CARD: 0813 See MEDICAL TESTS: 0129
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