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Silicon tetrahydride																				Related Pages
Synonyms & Trade Names
			Monosilane, Silane, Silicane
CAS No.
			7803-62-5
	RTECS No.
			VV1400000
	DOT ID & Guide
			2203 116

FormulaSiH4
	Conversion
			1 ppm = 1.31 mg/m3
	IDLH
			N.D.See: IDLH INDEX

Exposure Limits
			NIOSH RELTWA 5 ppm (7 mg/m3)
					OSHA PEL none See Appendix G
	Measurement Methods
			None available 
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless gas with a repulsive odor.													
										
Molecular Weight32.1	
	Boiling Point-169°F
	Freezing Point-301°F
	SolubilityDecomposes
	Vapor Pressure>1 atm
	Ionization Potential?											
Flash PointNA (Gas)
	Upper Explosive Limit?
	Lower Explosive Limit?
	Relative Gas Density1.11
Flammable Gas (may ignite SPONTANEOUSLY in air).
Incompatibilities & Reactivities
			Halogens (bromine, chlorine, carbonyl chloride, antimony pentachloride, tin(IV) chloride), water
Exposure Routes
			inhalation
Symptoms
			irritation eyes, skin, mucous membrane; nausea, headache
Target Organs
			Eyes, skin, respiratory system, central nervous system
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**No recommendation
							**Eyes:**No recommendation
							**Wash skin:**No recommendation
							**Remove:**No recommendation
							**Change:**No recommendation
	First Aid
			(See procedures)**Breathing:**Respiratory support
Respirator Recommendations
			Not available.
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0564

			
							

			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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Chemical Names, Synonyms and Trade Names
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CAS Numbers
RTECS Numbers
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
First Aid Procedures Follow NIOSH Facebook
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