Rh
Atomic mass: 102.9
(powder)
ICSC # 1247
CAS # 7440-16-6
RTECS # VI9069000
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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See Chemical dangers.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Cough.
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Local exhaust or breathing protection.
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Fresh air, rest.
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•Skin
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety goggles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Do not eat, drink, or smoke during work.
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Rinse mouth.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Personal protection: P2 filter respirator for harmful particles.
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See Chemical Dangers.
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Important Data
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Physical State; Appearance:
GREY
TO BLACK
POWDER.
Physical Dangers:
Chemical Dangers:
Reacts
violently with
halogens
causing fire hazard.
Rhodium is a catalytic substance and may cause reaction in contact with many organic and inorganic substances
, causing fire and explosion hazard.
Occupational Exposure Limits:
TLV: 1.0 mg/m3 as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2004).
MAK:
Carcinogen category: 3B;
(DFG 2004).
OSHA PEL: TWA 0.1 mg/m3
NIOSH REL: TWA 0.1 mg/m3
NIOSH IDLH: 100 mg/m3 (as Rh) See: rhodium
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Routes of Exposure:
Inhalation Risk:
A harmful concentration of airborne particles can be reached quickly when dispersed.
Effects of Short-Term Exposure:
May cause mechanical irritation.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 3695°C
Melting point: 1965°C
Density: 12.4
g/cm3
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Solubility in water: none
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Environmental
Data
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N O T E S
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Health effects of exposure to the substance have not been investigated adequately.
Recommendations in this card do not apply to water-soluble rhodium compounds.
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ADDITIONAL INFORMATION
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ICSC: 1247
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RHODIUM
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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