Chemical Name: Molybdenum
Synonym: Molybdenum Metal Product
Chemical Family: Refractory metal
Formula: Mo
Manufacturer: E-Biz Center of CTIA - Tungsten, Tungsten Alloy, Tungsten Carbide & Molybdenum Technologies Co.,Ltd.
Ingredient name |
CAS Number |
% WT |
Molybdenum |
7439-98-7 |
>=99% |
Hazard Rating Systems:
HMIS Ratings(Solid): Health 0 Flammability 0 Reactivity 0
HMIS Ratings(Powder): Health 1 Flammability 2 Reactivity 1
Appearance: Silver-grey to black with metallic luster.
Odor: Odorless
Boiling Point: 4325 0C (8717 0F)
Vapor Pressure (mmHg): NA
% Volatile (by volume): 0
Specific Gravity (H2O=1): 10.2
Vapor Density (Air=1): Not volatile
Evaporation Rate: Not volatile. Sublimes in air at high temperature.
Solubility in Water: Will oxidize in water and become slightly soluble.
Generic Description: Specialty metal; may be powder, wire, or fabricated metal parts.
Flash Point (Method used): N/A
Autoignition Temp: N/A
Flammable Limits: Lower: N/A
Upper: N/A
Extinguishing Media: Fine dust generated during grinding operations may ignite if allowed to accumulate and subjected to an ignition source. Cover burning material with an inert powder, such as dry sand or limestone, to exclude oxygen.
Special Fire Fighting Procedures: For a powder fire confined to a small area, use a respirator approved for toxic dusts and fumes. For a large fire involving this material, firefighters should use self-contained breathing apparatus.
Unusual Fire and Explosion Hazards: Dust may present a fire or explosion hazard under favoring conditions of particle size, dispersion and strong ignition source. However, this is not expected to be a problem under normal handling conditions.
Effects of Exposure: Molybdenum dust and fumes (formed above 400 0C) can cause irritation of the eyes, nose, throat, and respiratory tract. Aside from isolated reports in the Russian literature suggesting an association between molybdenum exposure and pulmonary and joint disorders (gout-like condition), there are no recognized long term effects attributed to industrial exposure to molybdenum. In general, molybdenum and its compounds are considered to be of low toxicity.
Routes of Exposure: Dust, mist and/or fumes generated during physical or metallurgical treatment may be inhaled, swallowed or come in contact with the skin or eyes.
Inhalation: If irritation occurs, remove from exposure. Seek medical attention.
Ingestion: If substantial quantities are swallowed, give person (if conscious) a large quantity of water to drink, induce vomiting. Seek medical attention.
Skin: If irritation occurs, thoroughly wash affected area with mild soap and water and prevent further contact. If irritation persists, seek medical attention.
Eye: If irritation occurs, flush with copious amounts of water. If irritation persists seek medical attention.
Stability: Stable
Conditions to Avoid: N/A
Hazardous Polymerization: Will not occur.
Incompatibility (Material to Avoid): Avoid contact of dust with strong oxidizers and acids.
Hazardous Decomposition Products: Molybdenum Trioxide fumes may form when the metal is exposed to high temperatures.
No special precautions are required for these welding electrodes.
Welding electrodes are dense materials and can give rise to a handling hazard when multiple packages are lifted or handled incorrectly or with poor lifting posture.
Good practice for handling and storage should be adopted to prevent physical injuries.
Steps to Be Taken in Case Material Is Released or Spilled (Applicable for Grinding Dust): Ventilate area of spill.
Clean-up using methods which avoid dust generation such as vacuuming (with appropriate filter to prevent airborne dust levels which exceed the PEL or TLV), wet dust mop or wet clean-up. If airborne dust is generated, use an appropriate NIOSH approved respirator.
Prepared By: E-Biz Center of CTIA - Tungsten, Tungsten Alloy, Tungsten Carbide & Molybdenum Technologies
Date: May 12, 2008
Reason For Issue: Updated Format
The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. Metalworking Products shall not be held liable for any damage resulting from handling or from contact with the above product. Any comments or questions should be directed to: Although Xiamen E-Biz Center of CTIA - Tungsten, Tungsten Alloy, Tungsten Carbide & Molybdenum Technologies has attempted to provide current and accurate information herein, CTIA E-biz Center makes no representations regarding the accuracy or completeness of the information and assumes no liability for any loss, damage, injury of any kind which may result from or arise out of the use of or reliance on the information by any person. The data contained on this sheet was provided for public display via the Internet.