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Lithium hydride																				Related Pages
Synonyms & Trade Names
			Lithium monohydride
CAS No.
			7580-67-8
	RTECS No.
			OJ6300000
	DOT ID & Guide
			1414 1382805 138(fused, solid)

FormulaLiH
	Conversion
	IDLH
			0.5 mg/m3See: 7580678

Exposure Limits
			NIOSH RELTWA 0.025 mg/m3OSHA 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.													
										
Molecular Weight7.95	
	Boiling PointDecomposes
	Melting Point1256°F
	SolubilityReacts
	Vapor Pressure0 mmHg (approx)
	Ionization PotentialNA											
Specific Gravity0.78	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
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
					  ICSC CARD: 0813
					  MEDICAL TESTS: 0129

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
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