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Manganese tetroxide (as Mn)																				Related Pages
Synonyms & Trade Names
			Manganese oxide, Manganomanganic oxide, Trimanganese tetraoxide, Trimanganese tetroxide
CAS No.
			1317-35-7
	RTECS No.
			OP0895000
	DOT ID & Guide

FormulaMn3O4
	Conversion
	IDLH
			N.D.See: IDLH INDEX

Exposure Limits
			NIOSH RELSee Appendix D
					OSHA PEL C 5 mg/m3See Appendix G
	Measurement Methods
			**NIOSH** 7300 , 7301 , 7303 , 9102;**OSHA** ID121 , ID125G
					
					See: NMAM or OSHA Methods
										
Physical Description
			Brownish-black powder.
					[Note: Fumes are generated whenever manganese oxides are heated strongly in air.]													
										
Molecular Weight228.8	
	Boiling Point?
	Melting Point2847°F
	SolubilityInsoluble
	Vapor Pressure0 mmHg (approx)
	Ionization PotentialNA											
Specific Gravity4.88	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA

Incompatibilities & Reactivities
			Soluble in hydrochloric acid (liberates chlorine gas)
Exposure Routes
			inhalation, ingestion, skin and/or eye contact
Symptoms
			Asthenia, insomnia, mental confusion; low-back pain; vomiting; malaise (vague feeling of discomfort), lassitude (weakness, exhaustion); kidney damage; pneumonitis
Target Organs
			respiratory system, central nervous system, blood, kidneys
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**No recommendation
							**Eyes:**No recommendation
							**Wash skin:**No recommendation
							**Remove:**No recommendation
							**Change:**Daily
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Soap wash
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			Not available.
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 1398

			
							

			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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