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Lithium hydride

Synonyms & Trade Names
Lithium monohydride
CAS No.
7580-67-8
RTECS No.
OJ6300000
DOT ID & Guide
1414 138
2805 138 (fused, solid)
Formula
LiH
Conversion
IDLH
0.5 mg/m3
See: 7580678
Exposure Limits
NIOSH REL
: TWA 0.025 mg/m3
OSHA PEL
: TWA 0.025 mg/m3
Measurement Methods

OSHA ID121
See: NMAM or OSHA Methods
Physical Description
Odorless, off-white to gray, translucent, crystalline mass or white powder.
MW:
7.95
BP:
Decomposes		 MLT: 1256°F
Sol:
Reacts
VP:
0 mmHg (approx)
IP:
NA
Sp.Gr:
0.78
Fl.P:
NA
UEL:
NA
LEL:
NA
Combustible Solid that can form airborne dust clouds which may explode on contact with flame, heat, or oxidizers.
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.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin; eye, skin burns; mouth, esophagus burns (if ingested); nausea; muscle twitches; mental confusion; blurred vision
Target Organs
Eyes, skin, respiratory system, central nervous system
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)
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Brush (DO NOT WASH)
Breathing: Respiratory support
Swallow: Medical attention immediately
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

See also: INTRODUCTION   See ICSC CARD: 0813   See MEDICAL TESTS: 0129
 

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