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NIOSH

CHROMYL CHLORIDE

ICSC: 0854

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
August 05, 2003 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Not combustible but enhances combustion of other substances. Many reactions may cause fire or explosion.
NO contact with flammable substances.
Carbon dioxide. Special powder. NO hydrous agents. In case of fire in the surroundings: use no water unless protected against toxic gases.
EXPLOSION

In case of fire: keep drums, etc., cool by spraying with water but NO direct contact with water.
EXPOSURE
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
•INHALATION Cough. Laboured breathing. Shortness of breath. Sore throat.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
•SKIN Redness. Skin burns. Pain. Blisters.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
•EYES Redness. Pain. Severe deep burns.
Face shield, or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Abdominal pain. Burning sensation. Shock or collapse.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

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.)
Fireproof. Separated from combustible and reducing substances, food and feedstuffs . Dry. Keep in the dark. Keep in a well-ventilated room.
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
ICSC: 0854 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

CHROMYL CHLORIDE

ICSC: 0854

I

M

P

O

R

T

A

N

T


D

A

T

A

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


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.

PHYSICAL
PROPERTIES

Boiling point: 117°C
Melting point: -96.5°C
Relative density (water = 1): 1.91
Solubility in water:
reaction
Vapour pressure, kPa at 20°C: 2.67
Relative vapour density (air = 1): 5.3

ENVIRONMENTAL
DATA

It is strongly advised that this substance does not enter the environment.

N O T E S

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.

ADDITIONAL INFORMATION



ICSC: 0854 CHROMYL CHLORIDE
(C) IPCS, CEC, 1994
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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