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Tuesday, 09 August 2011 00:32

Hydrocarbons, Aliphatic Unsaturated: Physical & Chemical Hazards

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Chemical Name
CAS-Number

Physical

Chemical

UN Class or Division /  Subsidiary Risks

cis-2-BUTENE
590-18-1

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 • As a result of flow, agitation, etc, electrostatic charges can be generated

trans-2-BUTENE
624-64-6

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 • As a result of flow, agitation, etc, electrostatic charges can be generated

1,3-BUTADIENE
106-99-0

The gas is heavier than air, and may travel along the ground; distant ignition possible • Liquid 1,3-butadiene floats and boils on water

The substance can under specific circumstances form peroxides, initiating explosive polymerization • The substance may polymerize due to warming with fire or explosion hazard • Shock-sensitive compounds are formed with copper and its alloys • The substance decomposes explosively on rapid heating under pressure • Reacts vigorously with oxidants and many other substances, causing fire and explosion hazard

2.1

n-BUTENE
106-98-9

The gas is heavier than air, and may travel along the ground; distant ignition possible

The substance may polymerize • May explode on heating • Reacts violently with oxygen and oxidants, causing fire and explosion hazard

2.1

2-BUTENE
107-01-7

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

The substance can polymerize in contact with organic and inorganic acids, halogens and halogenic substances

1,3-CYCLOHEXADIENE
592-57-4

The vapour is heavier than air

The substance can form explosive peroxides on exposure to air • On combustion, forms toxic gases • Reacts with strong oxidants causing fire and explosion hazard

CYCLOHEXENE
110-83-8

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

The substance can form explosive peroxides • The substance may polymerize under certain conditions • Reacts with strong oxidants causing fire and explosion hazard

3

CYCLOPENTADIENE
542-92-7

The vapour is heavier than air

Reacts with nitric acid, sulfuric acid and strong oxidants, causing fire and explosion hazard • The substance dimerizes spontaneously or on contact with peroxides or trichloroacetic acid

ETHYLENE
74-85-1

The gas is lighter than air

The substance may polymerize to form aromatic compounds due to heating up to 600°C • Reacts violently with chlorine in sunlight causing fire and explosion hazard • Reacts with oxidants causing explosive hazard

ETHYLIDENE NORBORNENE
16219-75-3

As a result of flow, agitation, etc, electrostatic charges can be generated

The substance may polymerize • Reacts violently with strong oxidants

1-HEXENE
592-41-6

The vapour is heavier than air and may travel along the ground; distant ignition possible, and may accumulate in low ceiling spaces causing deficiency of oxygen

Reacts vigorously with oxidants

3

SOBUTENE
115-11-7

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 • As a result of flow, agitation, etc, electrostatic charges can be generated

The substance can presumably form explosive peroxides • The substance is able to polymerize with fire or explosion hazard • Reacts violently with oxidants, chlorine, fluorine, nitrogen oxides, hydrogen chloride, hydrogen bromide, causing fire and explosion hazard • Attacks some plastics and natural rubber

ISOPRENE
78-79-5

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

The substance can readily form explosive peroxides • The substance polymerizes with fire or explosion hazard • Heating may cause violent combustion or explosion • Reacts with strong oxidants, strong reductants, strong acids, strong bases, acid chlorides, alcohols, alkali metals

2.1

1,7-OCTADIENE
3710-30-3

The vapour is heavier than air and may travel along the ground; distant ignition possible

The substance may polymerize under the influence of radical generating substances • On combustion, forms toxic and irritating fumes • Reacts with oxidants

3

1-OCTENE
111-66-0

The vapour mixes well with air, explosive mixtures are easily formed • As a result of flow, agitation, etc, electrostatic charges can be generated

The substance can presumably form explosive peroxides • Reacts violently with strong oxidants • Reacts with acids

2,4,4-TRIMETHYL-1-PENTENE
107-39-1

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

On combustion, forms toxic fumes • Upon heating, toxic fumes are formed • Reacts violently with oxidants

2,4,4-TRIMETHYL-2-PENTENE
107-40-4

The vapour is heavier than air and may travel along the ground; distant ignition possible

Upon heating, toxic fumes are formed • Reacts with oxidants

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

 

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