It might be similar to silica dust: https://louisville.edu/micronano/files/documents/safety-data-sheets-sds/silica/ https://louisville.edu/micronano/files/docu

It might be similar to silica dust: https://louisville.edu/micronano/files/documents/safety-data-sheets-sds/silica/ https://louisville.edu/micronano/files/documents/safety-data... I'm not sure about any differences due to the grain size or the presence of the water. (And maybe something unusual would happen when the water inside each droplet boils due to proximity to the flame -- I don't know what would happen as the droplets rupture.)