Mn
Atomic mass: 54.9
(powder)
ICSC # 0174
CAS # 7439-96-5
RTECS # OO9275000
|
|
Types of Hazard/ Exposure
|
Acute Hazards/ Symptoms
|
Prevention
|
First Aid/
Fire Fighting
|
|
FIRE
|
Combustible.
|
NO open flames.
|
Dry sand,
special powder.
|
|
Explosion
|
Finely dispersed particles form explosive mixtures in air.
|
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.
|
|
|
|
|
Exposure
|
|
PREVENT DISPERSION OF DUST!
AVOID Exposure OF (PREGNANT) WOMEN!
|
|
|
•Inhalation
|
Cough.
|
Local exhaust or breathing protection.
|
Fresh air, rest.
Refer for medical attention.
|
|
•Skin
|
|
Protective gloves.
|
Rinse and then wash skin with water and soap.
|
|
•Eyes
|
|
Safety goggles,
or eye protection in combination with breathing protection if powder.
|
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
|
|
•Ingestion
|
Abdominal pain.
Nausea.
|
Do not eat, drink, or smoke during work.
|
Rinse mouth.
Refer for medical attention.
|
|
Spillage Disposal
|
Storage
|
Packaging & Labelling
|
Sweep spilled substance into containers.
Carefully collect remainder,
then remove to safe place.
(Extra personal protection: P2 filter respirator for harmful particles.)
|
Separated from
acids.
Dry.
|
|
|
|
|
Important Data
|
Physical State; Appearance:
GREY
-
WHITE
POWDER
Physical Dangers:
Dust explosion possible if in powder or granular form, mixed with air.
Chemical Dangers:
Reacts slowly
with
water
more rapidly with steam
and
acids
forming flammable/explosive gas (hydrogen - see ICSC0001)
causing fire and explosion hazard.
Occupational Exposure Limits:
TLV: 0.2 mg/m3
(as TWA);
(ACGIH 2003).
MAK: (Inhalable fraction) 0.5 mg/m3
Pregnancy risk group: C;
(DFG 2007).
OSHA PEL*: C 5 mg/m3 *Note: Also see specific listings for Manganese cyclopentadienyl tricarbonyl and Methyl cyclopentadienyl manganese tricarbonyl.
NIOSH REL*: TWA 1 mg/m3 ST 3 mg/m3 *Note: Also see specific listings for Manganese cyclopentadienyl tricarbonyl, Methyl cyclopentadienyl manganese tricarbonyl, and Manganese tetroxide.
NIOSH IDLH: 500 mg/m3 (as Mn) See: 7439965
|
Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol
and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
Effects of Short-Term Exposure:
The aerosol
is irritating to
the respiratory tract
.
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the
lungs
and
central nervous system
, resulting in increased susceptibility to bronchitis, pneumonitis and neurologic, neuropsychiatric disorders (manganism).
Animal tests show that this substance possibly causes toxicity to human reproduction or development.
|
|
Physical
Properties
|
Boiling point: 1962°C
Melting point: 1244°C
Density: 7.47
g/cm3
|
Solubility in water:
none
|
|
Environmental
Data
|
This substance may be hazardous in the environment; special attention should be given to aquatic organisms.
|
|
N O T E S
|
|
Depending on the degree of exposure, periodic medical examination is suggested.
The recommendations on this Card also apply to ferro manganese.
|
|
ADDITIONAL INFORMATION
|
|
|
|
ICSC: 0174
|
MANGANESE
|
|
(C) IPCS, CEC, 1994
|
|
|
IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
|
|
|