Chromic (III) hydroxide hydrate
Cr(HO)3•nH2O
Molecular mass: See Notes
ICSC # 1455
CAS # 1308-14-1
RTECS # GB2670000
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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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Not combustible.
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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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•Inhalation
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•Skin
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Protective gloves.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
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•Eyes
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Redness.
Pain.
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Safety spectacles.
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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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Rest.
Refer for medical attention.
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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 containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
(Extra personal protection: P2 filter respirator for harmful particles.)
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Important Data
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Physical State; Appearance:
BLUE
TO GREEN
POWDER
OR BLACK PARTICLES.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
to chromic oxide.
Occupational Exposure Limits:
TLV: as Cr 0.5 mg/m3, as TWA; A4; (ACGIH 2003).
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation
and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly especially if powdered.
Effects of Short-Term Exposure:
May cause mechanical irritation tothe eyes.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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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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The name Chromic acid is used for this product, as well as for Chromic (VI) acid (CAS 7738-94-5) and for Chromium (VI) oxide (CAS 1333-82-0, see ICSC 1194).
The molecular weight may vary depending on the degree of hydration.
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ADDITIONAL INFORMATION
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ICSC: 1455
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CHROMIUM (III) HYDROXIDE HYDRATE
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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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