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TOHSS
How to ...
classify dangerous goods
Definition:
A dangerous good means any substance or article prescribed as dangerous
goods for the purposes of the Dangerous Goods Act 1975.
The following information is
a brief introduction to the classification of dangerous goods. For full
details on the classification and storage see The
Storage of Dangerous Goods
Dangerous goods are classified
into nine classes according to their characteristics.
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Class 1 - EXPLOSIVES
Explosive substances and articles
used to produce explosions or pyrotechnic effect.
This class is sub-divided into Class
1.1 (TNT, ANFO); Class 1.2 (bombs, grenades); Class 1.3 (display
fireworks); Class 1.4 (toy fireworks); Class 1.5 (proprietary explosives)
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Class 2 -
GASES
Gases which are compressed, liquefied or dissolved under pressure.
This class is sub-divided into Class
2.1 Flammable gases (acetylene, hydrogen, LPG); Class 2.2 Non-Flammable
Non-Toxic gases (nitrogen, carbon dioxide, liquid oxygen,medical
air); Class 2.3 Toxic gases (ammonia, chlorine)
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Class 3 -
FLAMMABLE LIQUIDS
Liquids which ignite on contact with ignition sources.
This class is sub-divided by Packaging
Group I (greatest danger - ether); PG II (medium danger - petrol,
alcohol, acetone, thinnersd); PG III (minor danger - kerosene, turpentine)
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Class 4 -
FLAMMABLE SOLIDS
Gases
which are combustible or emit a flammable gas when wet.
This class is sub-divided into Class
4.1 Flammable solids (nitrocellulose, magnesium, sulpur, activated
charcoal, phosphorus, matches); Class 4.2 Spontaneously Combustible
(sodium sulphide); Class 4.3 Dangerous When Wet (calcium carbide,
zinc, alkali metals)
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Class 5 -
OXIDISING AGENTS and ORGANIC PEROXIDES
This class is sub-divided into Class
5.1 Oxidising agents (pool chlorine, hydrogen peroxide, ammonium
nitrate; Class 5.2 Organic peroxides (benzoyl peroxides, cumene
hydroperoxide)
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Class 6 -TOXIC
SUBSTANCES
This class is sub-divided into Packaging
Group I (sodium cyanide, lead compounds); PG II (aniline, arsenic,
phenol, some pesticides); PG III (lead acetate, trochloroethylene,
some pesticides)
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Class 7 -
RADIOACTIVE SUBSTANCES
Radioactive substances comprise substances
or a combination of substances which emit radiation. Examples are
uranium and radioisotopes.
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Class 8 -
CORROSIVE SUBSTANCES
This class is sub-divided into Packaging
Group I (hydroflouric acid, nitric acid); PG II (hydrochloric acid,
caustic soda); PG III (phosphoric acid, liquid chlorine)
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Class 9 -
MISCELLANEOUS DANGEROUS GOODS
Substances which present relatively
low hazards. Examples are aerosols, polyester beads.
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