Chromic oxychloride
Dichlorodioxochromium
Chromium dichloride dioxide
CrO2Cl2
Molecular mass: 154.9
ICSC # 0854
CAS # 14977-61-8
RTECS # GB5775000
UN # 1758
EC # 024-005-00-2
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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 but enhances combustion of other substances.
Many reactions may cause fire or explosion.
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NO contact with flammable substances.
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Carbon dioxide.
Special powder.
NO hydrous agents.
In case of fire in the surroundings: use no water unless protected against toxic gases.
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Explosion
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In case of fire: keep drums, etc., cool by spraying with water but NO direct contact with water.
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Exposure
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AVOID ALL CONTACT!
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IN ALL CASES CONSULT A DOCTOR!
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•Inhalation
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Cough.
Laboured breathing.
Shortness of breath.
Sore throat.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Half-upright position.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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Redness.
Skin burns.
Pain.
Blisters.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
Refer for medical attention.
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•Eyes
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Redness.
Pain.
Severe deep burns.
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Face shield,
or eye protection in combination with breathing protection.
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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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Abdominal pain.
Burning sensation.
Shock or collapse.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Do NOT induce vomiting.
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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Evacuate danger area!
Ventilation.
Collect leaking liquid in sealable containers.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
Do NOT wash away into sewer.
Do NOT absorb in saw-dust or other combustible absorbents.
NEVER direct water jet on liquid.
(Extra personal protection: chemical protection suit including self-contained breathing apparatus.)
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Fireproof.
Separated from
combustible and reducing substances,
food and feedstuffs
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Dry.
Keep in the dark.
Keep in a well-ventilated room.
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Airtight.
Do not transport with food and feedstuffs.
Note: E
O symbol
T symbol
C symbol
N symbol
R: 49-46-8-35-43-50/53
S: 53-45-60-61
UN Hazard Class: 8
UN Packing Group: I
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Important Data
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Physical State; Appearance:
DARK
RED
FUMING
LIQUID
, WITH PUNGENT ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes violently
on contact with
water
producing
toxic and corrosive fumes
(
hydrogen chloride
,
chlorine
, chromium trioxide and chromium trichloride).
The substance is a strong oxidant and reacts violently with combustible and reducing materials.
Reacts
violently with water, non-metal halides, non-metal hydrides, ammonia and certain common solvents such as alcohol, ether, acetone, turpentine,
causing fire and explosion hazard.
Attacks many metals in presence of water.
Incompatible with plastics.
Can ignite combustible substances.
Occupational Exposure Limits:
TLV: 0.025 ppm as TWA; (ACGIH 2003).
MAK: sensitization of skin (Sh);
Carcinogen category: 2;
(DFG 2008).
OSHA PEL: none
NIOSH REL: Ca 0.001 mg Cr(VI)/m3 See Appendix A See Appendix C
NIOSH IDLH: Ca N.D. See: IDLH INDEX
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour or aerosol
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
is corrosive to
the eyes,
the skin
and
the respiratory tract.
Corrosive on ingestion.
Inhalation of the vapour may cause lung oedema (see Notes).
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact with skin may cause dermatitis.
Repeated or prolonged contact may cause skin sensitization.
This substance is probably carcinogenic to humans.
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Physical
Properties
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Boiling point: 117°C
Melting point: -96.5°C
Relative density (water = 1): 1.91
Solubility in water:
reaction
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Vapour pressure, kPa at 20°C: 2.67
Relative vapour density (air = 1): 5.3
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Environmental
Data
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It is strongly advised that this substance does not enter the environment.
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N O T E S
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Dissolves chromium trioxide, yielding a powerful oxidant.
Reacts violently with fire extinguishing agents such as water.
Depending on the degree of exposure, periodic medical examination is indicated.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
Do NOT take working clothes home.
Rinse contaminated clothes (fire hazard) with plenty of water.
Transport Emergency Card: TEC (R)-80GC1-I-X
NFPA Code: H3; F0; R2; W
Card has been partially updated in November 2008: see Occupational Exposure Limits.
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ADDITIONAL INFORMATION
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ICSC: 0854
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CHROMYL CHLORIDE
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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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