Liquids - volatility: low, medium or high
- You need the boiling point of your substance.
Find it in Section 9 of the Material Safety Data Sheet(MSDS) or under
Physical properties in the International Chemical Safety Card (ICSC).
- In addition to the boiling point you will need to know the process temperature
at which the task is carried out.
- Find the graph point that corresponds to both the boiling point and the process
temperature. It decides for the volatility of the liquid.
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Solids - dustiness: low, medium or high
- Low: Pellet like solids that don’t break up.
Little dust is seen during use e.g. PVC pellets, waxed flakes
- Medium: crystalline, granular solids. When used, dust is seen,
but settles out quickly. Dust is left on surfaces after use e.g. soap powder.
- High: fine, light powders. When used, dust clouds can be seen to form
and remain in the air for several minutes e.g. cement, carbon black, chalk dust.
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