ELECTRONIC SPACE PRODUCTS INTERNATIONAL
1050 Benson Way, Ashland, OR 97520
Toll Free (800) 638-2581 * Fax (541) 488-8313
E-Mail: sales@espimetals.com
MATERIAL SAFETY DATA SHEET
I PRODUCT IDENTIFICATION
Molybdenum Molybdenu m M etal Product
Trade Name: Synonym:
Refractory metal Mo
Ch em ical Fam ily: Form ula:
95.94 7439-9 8-7
Molecular Weight: CAS #:
II HAZAR DOUS INGRED IENTS
%
Haz ardous C omp onents OSHA/PEL ACGIH/ TLV
15 m g/m 3 10 m g/m 3
Molybdenum 0-100
III PHYSICAL DATA
4825 oC 10
Boiling Point: Specific Gravity (H 2O=1):
N/A N/A
Vapor Pressure (mm Hg): Evap oration R ate:
N/A 0
Vapo r Density: % Volatile by Volume:
Insoluble Air S am ple
Solubility in H 2O: How Best Monitored:
Gray m etal, no odor.
Appearance and Odor:
IV FIRE AND EXPLOSION H AZARDS DATA
Flash Point (Method used): N/A Autoignition Temp: N/A
Flam mab le Limits: Lower: N/A Upper: N/A
Extingu ishing 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 pow der fire con fined to a sm all area, use a respirator ap proved for toxic dusts an d fume s.
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 stron g ignition so urce. H owever, this is not exp ected to be a prob lem u nder n orm al hand ling con ditions.
V HEALTH HAZARD INFORMATION
Effects of Exposure: Molybdenum dust and fumes (formed above 400 oC) 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
pulm ona ry an d join t disord ers (gout-like co ndition), there are no re cog nized long term effects attributed to indu strial exp osure 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
com e in con tact with the skin or eye s.
Carcinogenic Assessment: None of the components of this material have been identified as known or suspected carcinogens by NTP,
IARC, or OSHA.
EMERG ENCY AND FIRST AID PROCEDURES:
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.
SK IN: If irritation occ urs, thorou ghly w ash affected area with mild soa p and water an d prev ent further contact. If irritation persists,
seek medical attention.
EYE: If irritation occurs, flush with copious amounts of water. If irritation persists seek medical attention.
VI REACTIVITY DATA
Stability: Stable
Co nditio ns to Av oid: N/A
Incompatibility (Material to Avoid): Avoid contac t of dust w ith strong oxidizers and acids.
Haz ardous D ecomposition Produc ts: Molybdenum Trioxid e fum es ma y form whe n the m etal is exposed to high tem peratures.
Hazardous Polymerization: Will not occur
VII SPILL OR LEAK PROC EDURES
Steps to Be Ta ken in Case M aterial Is Released or Spilled (Applicable for Gr inding 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 o r TLV ), wet dust mop o r wet clean-up. If airborne dust is generated, use an appropriate NIOS H app roved respirator.
Waste Disposal Method: Dispose o f in accord ance w ith Federal, State and L ocal regu lations.
VIII SPECIAL PROTECTION INFORMATION
Respiratory Protection (Specify Type): Use an appropriate NIOSH approved respirator if airborne dust concentrations exceed the
TL V. A ll appropriate req uirem ents set forth in 29 C F 19 10.1 34 sh ould be m et.
Ventilation: Use local exhaust ventilation which is adequate to limit personal exposure to levels which do no exceed the PEL or
TLV . If such equipment is not available, use respirators as specified above.
Protective Gloves: Recommend ed Eye Protection: Safety Goggles Recomm ended
Other Protection: N/A
IX SPECIAL PRECAUTIONS
Wo rk Practices: Maintain good housekeeping procedures to prevent accumulation of dust. Use clean-up methods which minimize
dust generation suc h as v acuum ing o r wet clean-up. If airbo rne d ust is generated, use an appropriate N IOS H approve d resp irator.
Wash thoroughly after handling and before eating or smoking and at the end of the work shift. Do not shake clothing or other items
to rem ove dust. U se a vacuum . Avoid d ust inh alation and direct skin contact. Do not ingest.
The abo ve inform ation is believ ed to be co rrect, but do es no t purp ort to b e all inclu sive an d sha ll be used only as a gu ide.
ESPI shall not be held liab le for any d am ages resultin g from h and ling o r from contact with the abov e pro duc t.
Issued by: S. Dierks
Date: August 2002
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