OXYGEN CENERATOR,
CHEMICAL
Packaging group: ?
Label of class
5.1
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UN No. Formula
3356
Properties
Oxygen generators, chemical, are devices containing chemicals which upon
activation release oxygen as a product of chemical reaction Chemical oxygen
generators are used for the generation of oxygen for respiratory support, e.g. in
aircraft submarines, spacecraft bomb shelters and breathing apparatus.
Oxidizing salts such as chlorates and perchlorates of lithium, sodium and
potassium, which are used in chemical oxygen generators, evolve oxygen when
heated. These salts are mixed (compounded) with a fuel, usually iron powder,
to form a chlorate candle, which produces oxygen by continuousreaction The
fuel is used to generate heat by oxidation. Once the reaction begins, oxygen is
released from the hot salt by thermal decomposition (a thermal shicld is used
around the generator). A portion of the oxygen reacts with the fuel to produce
more heat which produces more oxygen, and so on. Initiation of the reaction
can be achieved by a percussion device, friction device or electric wire.
Observations
An oxygen generator, chemical, containing oxidizing substances should meet
the following conditions:
.1 the generator when containing an explosive actuating device should only
be transported under this entry when excluded from Class 1 in
accordance with paragraph 2.1.3 of the United Nations
Recommendations on the Transport of Dangerous Goods;
.2 in addition to the requirements of packaging group ? applicable to the
package, the generator, without its packaging, shoutd be capable of
withstanding a 1.8 m drop test onto a rigid, non-resilient, flat and
horizontal surface, in the position most likely to cause damage, without
loss of its contents and without actuation;
.3 when a generator is equipped with an actuating device, it should have at
least two positive means of preventing unintentional actuation;
Packing
See table 2.4 in the Introduction to this class.
In addition, the generator(s)should be transported in a package which will meet
the following requirements when one generator in the package is actuated:
.1 other generators in the package will not be actuated;
.2 packaging material will not ignite; and
.3 thc outside surface temperature of the completed package must not
exceed 100℃
Stowage
Category D.
Packing, Stowage & Segregation
See also General Introduction and introduction to this class.
IMDG CODE - PAGE 5165-1 (page 5166 follows)
Amdt. 29-98
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