|
Chemical Name |
Physical |
Chemical |
UN Class or Division / Subsidiary Risks |
|
BUTANE |
The gas is heavier than air and may travel along the ground; distant ignition possible, and may accumulate in low ceiling spaces causing deficiency of oxygen |
On combustion, forms toxic gases; COx |
2.1 |
|
CYCLOHEXANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible • As a result of flow, agitation, etc, electrostatic charges can be generated |
3 |
|
|
CYCLOPENTANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible • As a result of flow, agitation, etc, electrostatic charges can be generated |
3 |
|
|
CYCLOPROPANE |
2.1 |
||
|
DECANE |
Can react with oxidizing materials |
3 |
|
|
2,3-DIMETHYLBUTANE |
3 |
||
|
ETHANE |
The gas mixes well with air, explosive mixtures are easily formed |
On combustion, forms toxic gases |
2.1 |
|
HEPTANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible • If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc |
Reacts violently with strong oxidants • Attacks many plastics |
3 |
|
HEXANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible |
Reacts with strong oxidants causing fire and explosion hazard |
3 |
|
ISOBUTANE |
2.1 |
||
|
2-METHYLBUTANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible • As a result of flow, agitation, etc, electrostatic charges can be generated |
May explode on heating • On combustion, forms acrid smoke and irritating fumes • Reacts violently with oxidants |
3 |
|
METHYLCYCLOHEXANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible • As a result of flow, agitation, etc, electrostatic charges can be generated |
Reacts violently with strong oxidants causing fire and explosion hazard |
3 |
|
2-METHYLHEPTANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible |
Upon heating, toxic fumes are formed • Reacts with oxidants |
|
|
3-METHYLPENTANE |
3 |
||
|
NONANE |
3 |
||
|
OCTANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible • As a result of flow, agitation, etc, electrostatic charges can be generated |
Reacts with strong oxidants causing fire and explosion hazard • Attacks some forms of plastics, rubber and coatings |
3 |
|
PENTANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible |
On combustion, forms toxic gases of carbon oxides • Reacts with strong oxidants (eg, peroxides, nitrates and perchlorates), causing fire and explosion hazard • Attacks some forms of plastics, rubber and coatings |
3 |
|
PROPANE |
The gas is heavier than air, and may travel along the ground; distant ignition possible • May accumulate in low ceiling spaces causing deficiency of oxygen |
On combustion, forms toxic fumes |
2.1 |
|
2,2,4-TRIMETHYLPENTANE |
The vapour is heavier than air and may travel along the ground; distant ignition possible • As a result of flow, agitation, etc, electrostatic charges can be generated |
Heating may cause violent combustion or explosion • Reacts with strong oxidants |
3 |
For UN Class: 1.5 = very insensitive substances which have a mass explosion hazard; 2.1 = flammable gas; 2.3 = toxic gas; 3 = flammable liquid; 4.1 = flammable solid; 4.2 = substance liable to spontaneous combustion; 4.3 = substance which in contact with water emits flammable gases; 5.1 = oxidizing substance; 6.1 = toxic; 7 = radioactive; 8 = corrosive substance