What's Molybdenum?
NIOSH Recommended Exposure Limit (REL)
Routes of Exposure: Inhalation; Ingestion; Skin and/or eye contact
Target Organs: Eyes, respiratory system, liver, kidneys
Levels In Humans:
Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
- Blood/mg dm-3: 0.001
- Bone/p.p.m: <0.7
- Liver/p.p.m: 1.3-5.8
- Muscle/p.p.m: 0.018
- Daily Dietary Intake: 0.05-0.35 mg
- Total Mass In Avg. 70kg human: 5 mg
Who / Where / When / How
- Discoverer: Carl Wilhelm ScheeleP.J. Hjelm
- Discovery Location: Uppsala Sweden
- Discovery Year: 1781
- Name Origin:
- Greek: molubdos (lead).
- Abundance of Molybdenum:
- Earth's Crust/p.p.m.: 1.5
- Seawater/p.p.m.: 0.01
- Atmosphere/p.p.m.: N/A
- Sun (Relative to H=1E12): 145
- Sources of Molybdenum:
- Found in the minerals molybdenite (MoS2) and wulfenite (MoO4Pb) also produced as a by-product of copper production. Annual world wide production is around 80,000 tons. Primary mining areas are USA, Australia, Italy, Norway, Bolivia.
- Uses of Molybdenum:
- Used in steel, aircraft, missiles, filaments in electric heaters, lubricants and protective coatings in boiler plates.
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COLLETED BY HANNS FROM wwww.miloybdenum.com.cn
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