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Manganese tetroxide (as Mn)

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Synonyms & Trade Names
Manganese oxide, Manganomanganic oxide, Trimanganese tetraoxide, Trimanganese tetroxide
CAS No.
1317-35-7
RTECS No.
OP0895000
DOT ID & Guide
Formula
Mn₃O₄
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
See Appendix D
OSHA PEL
C 5 mg/m3 See 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 Weight
228.8
Boiling Point
?
Melting Point
2847°F
Solubility
Insoluble
Vapor Pressure
0 mmHg (approx)
Ionization Potential
NA
Specific Gravity
4.88
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
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