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Thursday, 04 August 2011 23:49

Acids, Inorganic: Physical & Chemical Hazards

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Chemical Name
CAS-Number

Physical

Chemical

UN Class Or Division / Subsidiary Risks

CHLOROSULPHURIC ACID
7790-94-5

8

FLUOROSULPHURIC ACID
7789-21-1

8

HYDROCHLORIC ACID
7647-01-0

The gas is heavier than air

The solution in water is a strong acid, it reacts violently with bases and is corrosive • Reacts violently with oxidants forming toxic gas (chlorine) • On contact with air it emits corrosive fumes (hydrochloric acid) • Attacks many metals forming combustible gas (HYDROGEN)

8

HYDROFLUOBORIC ACID
16872-11-0

8

NITRIC ACID
7697-37-2

The substance decomposes on warming producing nitrogen oxides • The substance is a strong oxidant and reacts violently with combustible and reducing materials, eg, turpentine, charcoal, alcohol • The substance is a strong acid, it reacts violently with bases and is corrosive to metals • Reacts very violently with organic chemicals (eg, acetone, acetic acid, acetic anhydride), causing fire and explosion hazard • Attacks some plastics

8

PERCHLORIC ACID
7601-90-3

5.1/ 8

PHOSPHORIC ACID
7664-38-2

The substance violently polymerizes under the influence of azo compounds, epoxides and other polymerizable compounds • On combustion, forms toxic fumes (phosphorous oxides) • The substance decomposes on contact with metals, alcohols, aldehydes, cyanides, ketones, phenols, esters, sulfides, halogenated organics producing toxic fumes • The substance is a medium strong acid • Attacks metals to liberate flammable hydrogen gas

8

SULPHAMIC ACID
5329-14-6

8

SULPHURIC ACID
7664-93-9

On combustion, forms toxic fumes (sulphur oxides) • The substance is a strong oxidant and reacts violently with combustible and reducing materials • The substance is a strong acid, it reacts violently with bases and is corrosive to most common metals forming a flammable/explosive gas (hydrogen) • Reacts violently with water and organic materials with evolution of heat • Upon heating, irritating or toxic fumes (or gases) (sulphur oxides) are formed

8

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; = 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