National Institute for Occupational Safety and Health.

DHHS publication ; no. (NIOSH) 97-107 The hazards of powder dye handling operations and their control were discussed in this leaflet. During the manual transfer of powder dyes from bulk containers to smaller process containers, significant amounts of dust can be generated. Worker exposure to dye dust through breathing or skin contact can result in asthma, eczema, and severe allergic reactions. Certain dyes may also be carcinogens. Semidowndraft ventilation booths were recommended for use during the manual transfer of dyes. A vertical air shower pushes airborne dust out of the breathing zone of the worker until the dust is captured and exhausted. The use of shorter drums for shipping dye powders should eliminate the need for workers to place their heads inside the drum for manually transferring the powder. By providing a space between the worker's face and the top of the drum, booth ventilation should be able to capture the dust before it reaches the breathing zone of the worker. The suggestion was to limit drum height to 25 inches. When moving dye powder, slow, smooth movements are best. Dye transport distances between the bulk and the process containers should be minimized. Workers should avoid skin contact by using protective clothing including gloves, long sleeved shirts, and aprons.

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