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Sunday, 07 August 2011 07:17

Halogenated Unsaturated Hydrocarbons: Physical & Chemical Hazards

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Chemical Name
CAS-Number

Physical

Chemical

UN Class or Division /  Subsidiary Risks

ALLYL BROMIDE
106-95-6

3/ 6.1

ALLYL CHLORIDE
107-05-1

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

The substance may polymerize due to heating or under the influence of different metals, metal chlorides and sulfuric acid with fire or explosion hazard • On combustion, forms toxic and corrosive fumes (hydrogen chloride) • Reacts violently with strong oxidants and metals such as aluminum, magnesium, zinc, causing fire and explosion hazard • Attacks plastic, rubber and coatings

3/ 6.1

2-CHLORO-1,3-BUTADIENE
126-99-8

3/ 6.1

3-CHLORO-2-METHYLPROPENE
563-47-3

3

1,1-DICHLOROETHENE
75-35-4

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

The substance can readily form explosive peroxides • The substance will polymerize readily due to heating or under the influence of oxygen, sunlight, copper or aluminium, with fire or explosion hazard • May explode on heating or on contact with flames • The substance decomposes on burning producing toxic and corrosive fumes (hydrogen chloride, phosgene and chlorine) • Reacts violently with oxidants

3

1,2-DICHLOROETHYLENE
540-59-0

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

On contact with hot surfaces or flames this substance decomposes forming toxic gases and vapours (hydrogen chloride, phosgene, and carbon monoxide) • Reacts with strong oxidants causing fire and explosion hazard

3

cis-1,2-DICHLOROETHYLENE
156-59-2

3

trans- 1,2- DICHLOROETHYLENE
156-60-5

3

1,2-DICHLORO-2-PROPENE
78-88-6

3

1,3-DICHLOROPROPENE
542-75-6

3

cis-1,3-DICHLOROPROPENE
10061-01-5

3

trans-1,3-DICHLOROPROPENE
10061-02-6

3

HEXACHLOROBUTADIENE
87-68-3

The vapour is heavier than air

The substance decomposes on burning producing irritating or poisonous gases (phosgene)

6.1

PROPARGYL BROMIDE
106-96-7

TETRACHLOROETHYLENE 
127-18-4

The vapour is heavier than air

On contact with hot surfaces or flames this substance decomposes forming toxic and corrosive fumes (hydrogen chloride, phosgene, chlorine) • The substance decomposes slowly on contact with moisture producing trichloroacetic acid and hydrochloric acid • Reacts with metals such as aluminium, lithium, barium, berrylium

6.1

TRICHLOROETHYLENE
79-01-6

The vapour is heavier than air • As a result of flow, agitation, etc, electrostatic charges can be generated

On contact with hot surfaces or flames this substance decomposes forming toxic and corrosive fumes (phosgene, hydrogen chloride, chlorine) • The substance decomposes on contact with strong alkali producing dichloroacetylene , which increases fire hazard • Reacts violently with metals such as lithium, magnesium aluminium, titanium, barium and sodium • Slowly decomposed by light in presence of moisture, with formulation of corrosive hydrochloric acid

6.1

VINYL BROMIDE
593-60-2

2.1

VINYL CHLORIDE
75-01-4

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

The substance can under specific circumstances form peroxides, initiating explosive polymerization • The substance will polymerize readily due to heating and under the influence of air, light, and on contact with a catalyst, strong oxidizing agents and metals such as copper and aluminium, with fire or explosion hazard • The substance decomposes on burning producing toxic and corrosive fumes (hydrogen chloride and phosgene)

2.1

VINYLIDENE CHLORIDE
75-35-4

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

The substance can form explosive peroxides • The substance can polymerize due to heating or under the influence of oxygen, sunlight, copper or aluminium with fire or explosion hazard • May explode on heating or on contact with flames • The substance decomposes on burning producing hydrogen fluoride • Reacts violently with oxidants and hydrogen chloride

2.1

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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Contents

Preface
Part I. The Body
Part II. Health Care
Part III. Management & Policy
Part IV. Tools and Approaches
Part V. Psychosocial and Organizational Factors
Part VI. General Hazards
Part VII. The Environment
Part VIII. Accidents and Safety Management
Part IX. Chemicals
Part X. Industries Based on Biological Resources
Part XI. Industries Based on Natural Resources
Part XII. Chemical Industries
Part XIII. Manufacturing Industries
Part XIV. Textile and Apparel Industries
Part XV. Transport Industries
Part XVI. Construction
Part XVII. Services and Trade
Part XVIII. Guides