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Tuesday, 09 August 2011 01:26

Isocyanates: Physical & Chemical Hazards

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Chemical Name
CAS-Number

Physical

Chemical

UN Class or Division / Subsidiary Risks

1,5-NAPHTYLENE DIISOCYANATE
3173-72-6

The substance decomposes on heating producing toxic fumes (nitrogen oxides)

METHYLENE BISPHENYL ISOCYANATE
101-68-8

The substance may polymerize due to heating above 204 °C or under the influence of temperatures above 204 °C. •On combustion, forms toxic and corrosive fumes including nitrogen oxides and hydrogen cyanide. •Reacts readily with water to form insoluble polyureas. •Reacts violently with acids, alcohols, amines, bases and oxidants causing fire and explosion hazard

6.1

CYCLOHEXYL ISOCYANATE
3173-53-3

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

The substance may polymerize due to heating and under the influence of incompatible materials. •The substance decomposes on burning producing toxic fumes (nitrogen oxides). •Reacts with oxidants and strong bases, water, alcohol, acids and amines

6.1

ETHYL ISOCYANATE
109-90-0

3/ 6.1

HEXAMETHYLENE DIISOCYANATE
822-06-0

The substance will polymerize under the influence of temperatures above 93 °C. •On combustion, forms toxic and corrosive fumes including nitrogen oxides and hydrogen cyanide. •The substance decomposes on contact with water to form amine and polyureas. •Reacts violently with acids, alcohols, amines, bases and oxidants causing fire and explosion hazard. •Attacks copper

6.1

ISOPHORONE DIISOCYANATE
4098-71-9

The substance decomposes on heating producing toxic fumes (nitrogen oxides). •Reacts with oxidants, acids, alcohols, amines, amides, mercaptanes. •Attacks many metals, plastics, and rubber

6.1

METHYL ISOCYANATE
624-83-9

The vapour is heavier than air and may travel along the ground; distant ignition possible. •The vapour mixes well with air, explosive mixtures are easily formed

The substance may polymerize due to heating or under the influence of water and catalysts. •The substance decomposes on heating producing toxic gases (hydrogen cyanide, nitrogen oxides, carbon monoxide). •Reacts with strong oxidants. •Reacts violently with water, acids, alcohols, amines, iron, steel, zinc, tin, copper (or alloys of these metals) causing fire and explosion hazard. •Attacks some forms of plastic, rubber and coatings

6.1/ 3

PHENYL ISOCYANATE
103-71-9

6.1

TOLUENE DIISOCYANATE
26471-62-5

6.1

TOLUENE-2,4-DIISOCYANATE
584-84-9

6.1

TOLUENE-2,6-DIISOCYANATE
91-08-7

6.1

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