MATERIAL SAFETY DATA SHEET

I.   PRODUCT IDENTIFICATION

Manufacturer/Supplier:

ESPI Metals

1050 Benson Way, Ashland, OR 97520

Toll Free (800) 638-2581 * Fax (541) 488-8313

E-Mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Product Name:     Manganese Oxide (Manganese III Oxide)

Formula:               Mn₂O₃

CAS Number:        1317-34-6

II.   HAZARDOUS INGREDIENTS

Hazardous Components:  Manganese Oxide

Percent (%):                    0-100

OSHA PEL:                        5 mg (Mn)/m³

ACGIH TLV:                       0.2 mg (Mn)/m³

HMIS Ratings:

Health:                             1

Flammability:                   0

Reactivity:                        0

III.   PHYSICAL DATA

Boiling Point:                   N/E

Melting Point:                  N/E

Specific Gravity:               4.50 gm/cc

Solubility in H₂O:             Insoluble

Appearance and Odor:     Black crystalline powder

IV.   FIRE AND EXPLOSION HAZARDS DATA

Flash Point:  N/A

Autoignition Temperature:  N/A

Flammable Limits:  Upper:  N/A      Lower:  N/A

Extinguishing Media:  Use suitable extinguishing media for surrounding material and type of fire.

Special Fire Fighting Procedures:  Firefighters must wear full face, self-contained breathing apparatus and full protective clothing to prevent contact with skin and eyes.

Unusual Fire & Explosion Hazards:  May emit toxic fumes when heated to decomposition.

V.   HEALTH HAZARD INFORMATION

Health Hazards:

To the best of our knowledge the chemical, physical and toxicological properties of manganese oxide have not been thoroughly investigated and recorded.

Some manganese compounds are experimental tumorigens.  They can cause central nervous and pulmonary system damage by inhalation of fumes and dust.  Very few poisonings have occurred from ingestion.  Chronic manganese poisoning is a clearly characterized disease which results from inhalation of fumes or dusts of manganese.  The central nervous system is the chief site of damage.  Exposure to dusts and fumes can possibly increase the incidence of upper respiratory infections and pneumonia (Sax, Dangerous Properties of Industrial Materials).

Acute Effects:

Inhalation:  May cause irritation of the respiratory tract and mucous membranes, increase the incidence of upper respiratory tract and pulmonary infections.  May cause metal fume fever.  May also cause emphysema and acute pulmonary edema.

Ingestion:  Absorption of manganese compounds from the gastrointestinal tract is poor under normal conditions.  May cause abdominal pain and nausea.

Skin:  May cause irritation.

Eye:  May cause irritation.

Chronic Effects:

Inhalation:  May cause pulmonary pneumonitis, manganism (psychosis and neurological disorders effecting the central nervous system).

Ingestion:  None recorded.

Skin:  May cause dermatitis.

Eye:  May cause conjunctivitis.

Carcinogenicity:  NTP:  No     IARC:  No     OSHA:  No

EMERGENCY AND FIRST AID PROCEDURES:

INHALATION:  Remove victim to fresh air, keep warm and quiet, give oxygen if breathing is difficult and seek medical attention.

INGESTION:  Give 1-2 glasses of water or milk and induce vomiting; seek medical attention.  Never induce vomiting or give anything by mouth to an unconscious person.

SKIN:  Remove contaminated clothing, brush material off skin, wash affected area with soap and water.  Seek medical attention.

EYE:  Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes.  Seek medical attention.

VI.   REACTIVITY DATA

Stability:  Stable

Conditions to Avoid:  No data

Incompatibility (Material to Avoid):  Strong oxidizing agents.

Hazardous Decomposition Products:  Manganese fume.

Hazardous Polymerization:  Will not occur

VII.   SPILL OR LEAK PROCEDURES

Steps to Be Taken in Case Material Is Released or Spilled: Wear appropriate respiratory and protective equipment specified in section VIII.  Isolate spill area, provide ventilation and extinguish sources of ignition.  Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for proper disposal.  Take care not to raise dust.  Use non-sparking tools.

Waste Disposal Method:  Dispose of in accordance with Federal, State and Local regulations.

VIII.   SPECIAL PROTECTION INFORMATION

Respiratory Protection:  NIOSH-approved dust respirator.

Ventilation:  Use local exhaust to maintain concentration at or below the PEL, TLV.  Mechanical exhaust is not recommended.

Eye Protection:  Safety glasses

Protective Gloves:  Impervious gloves.

Other Protective Clothing or Equipment:  Protective gear suitable to prevent contamination.

IX.   SPECIAL PRECAUTIONS

Precautions to Be Taken in Handling and Storage:  Keep container tightly sealed.  Store in cool, dry place in tightly closed containers.  Ensure good ventilation at the workplace.

Work Practices:  Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels.  Use good housekeeping and sanitation practices.  Do not use tobacco or food in work area.  Wash thoroughly before eating and smoking.  Do not blow dust off clothing or skin with compressed air.  Maintain eyewash capable of sustained flushing, safety drench shower and facilities for washing.

TSCA Listed:  Yes

DOT Regulations:
Hazard Class:    None

The above information is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide.  ESPI shall not be held liable for any damage resulting from handling or from contact with the above product.

Issued By:                  S. Dierks

Revised/Verified:         August 2011