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Box 2.8. The Column Model<br />

In case of doubt, the immediate higher level of classification should be systematically selected.<br />

Risks:<br />

level/type<br />

Very high<br />

High<br />

Medium<br />

Low<br />

Negligible<br />

Acute health<br />

hazards<br />

(single<br />

affection)<br />

R26, R27,<br />

R28, R32<br />

R23, R24,<br />

R25, R29,<br />

R31, R32,<br />

R42, R43<br />

R20, R21,<br />

R22, R34,<br />

R41, R64,<br />

R36, R37,<br />

R38, R65,<br />

R66, R67<br />

Chronic<br />

health<br />

hazards<br />

(repeated<br />

affection)<br />

R45, R49<br />

R33, R40,<br />

R60, R61,<br />

R68<br />

R63<br />

Others (no<br />

R-Phrase<br />

associate,<br />

but<br />

hazardous<br />

Harmless substances by<br />

experience (e.g. sugar,<br />

water, paraffin and similar)<br />

Environmental<br />

Hazards<br />

R50, R51, R53,<br />

R54, R55, R56,<br />

R57, R58, R59<br />

R52, R53 R10<br />

Fire and<br />

explosion<br />

hazards<br />

R2, R3,R12,<br />

R17<br />

R1, R4, R5,<br />

R6, R7, R8,<br />

R9, R11,<br />

R15, R16,<br />

R18, R19,<br />

R30, R44<br />

Hardly<br />

flammable<br />

substances/<br />

preparations<br />

(55-100°C)<br />

Inflammable<br />

or very<br />

hardly<br />

flammable<br />

substances/<br />

preparations<br />

(100°C)<br />

Exposure potential<br />

• Gases;<br />

• Liquids which evaporate at<br />

room temperature;<br />

• Dust producing solids;<br />

• Aerosols.<br />

Liquids which evaporate<br />

between 30 and 50°C<br />

Liquids which evaporate<br />

between 50 and 150°C<br />

Liquids which evaporate at<br />

more than 150°C<br />

Liquids which evaporate at<br />

more than 200°C<br />

Hazards caused by<br />

procedure<br />

• Open processing;<br />

• Possibility of direct skin<br />

contact;<br />

• Application on large area.<br />

Closed processing but<br />

exposure possibilities e.g.<br />

when filling sampling or<br />

cleaning<br />

• Tightly closed equipment;<br />

• Closed equipment, with<br />

exhaust facilities at points of<br />

emission.<br />

Source: Based on the classification provided by Berufsgenossenschaftliches Institut für Arbeitssicherheit (BIA) www.hvbg.de/bia<br />

72

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