Name: Trifluoromethane
Alias: fluoroform
Molecular
formula: CHF3
Relative molecular
weight: 70.01
Class of chemicals:
organics - derivatives of hydrocarbons
Type of regulation: no
regulation
Storage: Sealed
storage
Trifluoromethane, also
known as trifluoromethane, is a colorless, tasteless, non-conductive gas that
is an ideal halogenated substitute.
Physical properties:
English name： |
trifluoromethane |
English nickname： |
Carbon trifluoride; fluoroform; freon 23;
Halocarbon 23; R-23; |
CAS No： |
75-46-7 |
EINECS No： |
200-872-4 |
Molecular formula： |
CHF3 |
Relative density（water=1）： |
1.52(-80℃) |
Molecular weight： |
70.0138 |
Relative vapour density（air=1）： |
2.43 |
Fusing point (℃)： |
-155 |
Saturated vapor pressure(kPa)： |
2504(20℃) |
Boiling point(℃)： |
-84 |
Critical temperature(℃)： |
25.7 |
Appearance and Properties： |
Colorless and odorless gas. |
Critical pressure(MPa)： |
4.84 |
Solubility |
Soluble in water |
Chemical property |
Non-flammable,heat points to explain the highly
toxic smoke. |
Functions and Uses
Used as low
temperature (-100℃) refrigerant, electronic industry plasma chemical etching
agent and fluoroorganic compounds of raw materials.
Points for Attention
in Use
Risk Overview
Health hazards: Can
cause headache, nausea and vomiting after exposure. It has an anesthetic
effect.
Environmental hazard:
may cause pollution to the atmosphere.
Explosion hazard: the
product is non-combustible.
First aid measures
Inhalation: leave the
scene quickly to fresh air. Keep the airway open. Give oxygen if you
have difficulty breathing. If breathing stops, give artificial respiration
immediately. Go to a doctor.
Fire control measures
Harmful combustion
product: hydrogen fluoride.
Extinguishing method:
the product is non-combustible. Cut off the air supply. Spray water
to cool the container and, if possible, move the container away from the fire
to an open space.
Emergency treatment of
leakage
Emergency treatment:
quickly evacuate the personnel from the contaminated leakage area to the upwind
place, and carry out isolation, and strictly restrict access. Emergency
personnel are advised to wear self-contained positive pressure breathing
apparatus and general working clothes. Cut off the source of leakage as
much as possible. Reasonable ventilation to accelerate
diffusion. Leakage containers should be properly handled, repaired and
inspected before use.
Operate disposal and
storage
Precautions for
operation: airtight operation and comprehensive ventilation. Operators
must be specially trained and strictly abide by the operating rules. Keep
away from flammable and combustible materials. Prevent gas leakage into
the workplace air. Avoid contact with oxidizing agents. Disload
lightly during handling to prevent damage of cylinders and
accessories. Equipped with leakage emergency treatment equipment.
Precautions for
storage: Store in a cool, ventilated warehouse. Keep away from fire and
heat. The storage temperature should not exceed 30℃. Should be stored
separately from oxidizing agents and inflammable substances, and should not be
mixed. The storage area should be equipped with leakage emergency
treatment equipment.
The preparation of
It is prepared by
chloroform and hydrogen fluoride catalyzed by antimony chloride fluoride, or by
disproportionation reaction of chlorodifluoromethane.
