INTOX Home Page
CHLORINE TRIFLUORIDE ICSC: 0656
Date of Peer Review: October 1997

Chlorine fluoride
Chlorotrifluoride
(cylinder)
CAS # 7790-91-2 ClF3
RTECS # FO2800000 Molecular mass: 92.5
UN # 1749
EC Index #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible but enhances combustion of other substances. Gives off highly toxic fumes in a fire. Many reactions may cause fire or explosion.
NO contact with flammable substances. NO contact with water.
In case of fire in the surroundings: NO hydrous agents.
EXPLOSION Risk of fire and explosion on contact with water or with organic material.

In case of fire: cool cylinder by spraying with water but avoid contact of the substance with water. Combat fire from a sheltered position.
EXPOSURE
AVOID ALL CONTACT!

Inhalation Burning sensation. Cough. Sore throat. Laboured breathing. Shortness of breath.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Refer for medical attention.
Skin Redness. Serious skin burns. Pain. Blisters.
Protective gloves. Protective clothing.
First rinse with plenty of water, then remove contaminated clothes and rinse again. Refer for medical attention.
Eyes Redness. Pain. Severe deep burns. Permanent loss of vision.
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


SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Ventilation. Stop flow of gas. If leak cannot be stopped in place, remove cylinder in open air and allow to empty. NEVER direct water jet on liquid. Personal protection: complete protective clothing SPECIFICALLY RECOMMENDED AS EFFECTIVE AGAINST Chlorine trifluoride, including self-contained breathing apparatus.
Do not transport with food and feedstuffs and combustible materials.
EU Classification
UN Classification
UN Hazard Class: 2.3
UN Subsidiary Risks: 5.1 and 8

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-20G2TOC
NFPA Code: H4; F0; R3; W,OX
Fireproof. Separated from combustible and reducing substances, food and feedstuffs. Cool. Dry.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
CHLORINE TRIFLUORIDE ICSC: 0656
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
NEARLY COLOURLESS COMPRESSED LIQUEFIED GAS, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The gas is heavier than air.

CHEMICAL DANGERS:
The substance decomposes above 220C producing toxic gases (chlorine and fluorine compounds). Reacts violently with water, glass. Reacts with all forms of plastics, rubber, and resins, except the highly fluorinated polymers. Most combustible materials ignite spontaneously on contact with this substance. Reacts violently with oxidizable materials, metals and metal oxides. Explodes in contact with organic materials. Emits highly toxic fumes on contact with acids.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.1 ppm (Ceiling value); (ACGIH 2005).
MAK: IIb (not established but data is available) (DFG 2005).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
A harmful concentration of this gas in the air will be reached very quickly on loss of containment.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Inhalation of the substance may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated. See Notes.

PHYSICAL PROPERTIES
Boiling point: 12C
Melting point: -76C
Solubility in water: reaction
Relative vapour density (air = 1): 3.18
ENVIRONMENTAL DATA

NOTES
Thorough flushing with an inert gas should precede any opening of apparatus that has contained chlorine trifluoride. Reacts violently with fire extinguishing agents such as water. The occupational exposure limit value should not be exceeded during any part of the working exposure. 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 is therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. Do NOT spray water on leaking cylinder (to prevent corrosion of cylinder). Also consult ICSC 0283 Hydrogen fluoride. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005