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What is meant by particle properties in SDS Part 9

Posted Date:2024/12/31

‌The particle characteristics (particle features) in Section 9 of the SDS are only applicable to solids. The particle size (median and range) must be specified. If available and appropriate, additional characteristics such as particle size distribution (range), shape and aspect ratio, and specific surface area can be provided. ‌

Particle size:
When assessing the particle size related to the risk of dust explosion, only fine particles with a particle size of ≤ 500 μm are relevant. Even if the median particle size of the entire sample is greater than 500 μm, as long as it contains particles with a size of ≤ 500 μm, the risk of dust explosion needs to be considered.

Shape and surface characteristics:
The shape and surface characteristics of particles can also affect their physical and chemical properties. For instance, spherical particles are less likely to form dust clouds compared to irregularly shaped ones, thereby reducing the risk of explosion.

Dust explosion risk assessment:
Dust explosion risk assessment needs to take into account factors such as particle size, shape and surface characteristics. Only fine particles with a particle size of ≤ 500 μm can pose an explosion risk when they form a dust cloud in the air. Therefore, when using and storing substances containing fine particles, special attention should be paid to ventilation and prevention of dust accumulation.‌

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