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MSDS Material Safety Data Sheet
CAS

1313-27-5

File Name: 1313-27-5.asp

                                          MATERIAL SAFETY DATA SHEET



I PRODUCT IDENTIFICATION

Trade Name: Molybdenum Oxide Formula: MoO3
Chemical Family: Metal Oxide CAS #: 1313-27-5


II HAZARDOUS INGREDIENTS

Hazardous Components: Nuisance Dust, Total & Respirable, if generated. Molybdenum Trioxide, 99.9%

Exposure Limit Units Agency Type
mg/m3
10.000 ACGIH TWA-T-DUST
mg/m3
5.000 ACGIH TWA-R-DUST
mg/m3
10.000 MSHA TWA-T-DUST
mg/m3
15.000 OSHA TWA-R-DUST
mg/m3
5.000 OSHA TWA-T-DUST
mg/m3
10.000 CAL OSHA TWA-R-DUST
mg/m3
5.000 CAL OSHA TWA-R-DUST
mg/m3
10.000 ACGIH TWA
mg/m3
10.000 MSHA TWA
mg/m3
10.000 OSHA TWA-T-DUST
mg/m3
10.000 CAL OSHA TWA

This product contains the following chemicals subject to the reporting requirements of SARA 313 and 40 CFR 372: Molybdenum
Trioxide, Weight %: 99.9

Precautionary Warning: WARNING! Harmful If Inhaled or Swallowed. Causes Eye Irritation. Avoid Breathing Dust. Keep
Container Closed. Use with Adequate Ventilation. Avoid Contact with Eyes, Skin and Clothing. Wash Thoroughly after Handling.
Do Not Taste or Swallow.


III PHYSICAL DATA

795 oC (Sublimation starts @ 750 oC)S
Melting Point: olubility in H2O: Sparingly
Appearance and Odor: White to off white powder. No odor. Specific Gravity: 4.69


IV FIRE AND EXPLOSION HAZARDS DATA

Extinguishing Media: Use that which is appropriate for the surrounding fire.

Unusual Fire and Explosion Hazards: No unusual fire or explosion hazards are expected.
Special Fire Fighting Procedures: Wear appropriate protective equipment including respiratory protection as conditions warrant.
Stop spill/release if it can be done without risk. Move undamaged containers from fire area if it can be done without risk. Water
spray may be useful in minimizing or dispensing vapors and cooling equipment exposed to heat and flame.
V HEALTH HAZARD INFORMATION

Routes of Entry:

Eye Contact: This material is an eye irritant. Contact with dusts may cause stinging, tearing, redness and swelling.
Skin Contact: Contact with dusts may be abrasive and irritating to the skin and may cause redness and burning. There is insufficient
information available on this material to predict the effects from skin absorption.

Inhalation (Breathing): This material is toxic by inhalation. Breathing dusts may be harmful. Effects of overexposure may include
irritation of the nose and throat, diarrhea and tremors. Respiratory symptoms associated with pre-existing lung disorders (e.g.
Asthma-like conditions). May be aggravated by exposure to this material.

Ingestion (Swallowing): This material is toxic and may be harmful if swallowed. Effects of overexposure may include diarrhea and
tremors.

EMERGENCY AND FIRST AID PROCEDURES:

EYE: Move victim away from exposure and into fresh air. If irritation or redness develops, flush eyes with clean water and seek
medical attention. For direct contact hold eyelids apart and flush the affected eye(s) with clean water for at least 15 minutes. Seek
medical attention.
SKIN: Remove contaminated shoes and clothing and flush affected area(s) with large amounts of water. If skin surface is damaged,
apply a clean dressing, and seek medical attention. If skin surface is not damaged, cleanse the affected area(s) thoroughly by washing
with mild soap and water. If irritation or redness develops, seek medical attention.
INHALATION: Immediately move victim away from exposure and into fresh air. If respiratory symptoms or other symptoms of
exposure develop, seek immediate medical attention. If victim is not breathing, immediately begin artificial respiration. If breathing
difficulties develop, oxygen should be administered by qualified personnel. Seek immediate medical attention.
INGESTION: If victim is conscious and alert, vomiting should be induced for ingestion of more than one swallow (1-2 tablespoons
for an adult) preferably with syrup of ipecac under direction from a physician or poison center. If syrup of ipecac is not available,
vomiting can be induced by gently placing two fingers in the back of the throat. If possible, do not leave victim unattended.


VI REACTIVITY DATA

Stability: Stable under normal conditions of storage and handling.
Incompatibility Materials: Avoid contact with strong alkali metals or hot magnesium.
Hazardous Decomposition Products: None known.

Hazardous Polymerization: Will not occur.
Conditions Affecting Reactivity: None known.
Polymerization Conditions to Avoid: None known.


VII SPILL OR LEAK PROCEDURES

Steps to Be Taken in Case Material Is Released or Spilled: Stay upwind and away from spill/release. Isolate hazard area and limit
entry to authorized personnel. Stop spill/release if it can be done without risk. Wear appropriate protective equipment. Including
respiratory protection as conditions warrant. Prevent spilled material from entering sewers, storm drains, and other unauthorized
treatment/drainage systems and natural waterways. Minimize dust generation. Sweep up and place appropriately for disposal. Notify
appropriate Federal, State and Local Agencies. Clean-up procedure should insure minimizing dust; vacuum dust rather than sweep,
for example. Do not allow material to enter source of drinking water.

Waste Disposal Method: Dispose of product in accordance with Local, State and Federal regulations.
VIII SPECIAL PROTECTION INFORMATION

Respiratory Protection: If airborne concentrations exceed established exposure limits, a exhaust system may be required.
Ventilation: If current ventilation practices are not adequate to maintain airborne concentrations below the established exposure
limits, additional ventilation or exhaust systems may be required.

Eye Protection: Approved eye protection to safeguard against potential eye contact, irritation or injury is recommended.
Protective Gloves: The use of gloves impermeable to the specific material handled is advised to prevent skin contact, possible
irritation and absorption.

Other Protective Equipment: It is suggested that a source of clean water be available in the work area for flushing eyes and skin.
Impervious clothing should be worn as needed.


IX SPECIAL PRECAUTIONS

Handling and Storage Conditions: Avoid contact with strong alkali metals (Particularly Sodium) or hot magnesium. Use and store
this material in cool, dry, well ventilated areas. Keep container(s) closed. Store only in approved containers. Keep away from any
incompatible materials. Protect container(s) against physical damage. Do not enter confined spaces such as tanks or pits without
following proper entry procedures such as ASTM D-4276. The use of respiratory protection is advised when concentrations exceed
any established exposure limits. Wash thoroughly after handling. Do not wear contaminated clothing or shoes. Use good personal
hygiene practice.


Prepared by: S. Dierks
Revised Date: July 1991

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