An industrial ventilation fan is intended to be used to remove but significant amounts of the Photopia Purple AQ-R/WPL404 will not be vaporised. PUBLIC EXPOSURE There is a low potential for public exposure to Photopia Purple AQ-R/WPL404 during manufacturing notified chemical will be in paste form, minimising the formation of dusts. Photopia Purple AQ-R/WPL404 is of low solubility in water and has a very low vapour pressure, so will not be discharged to the atmosphere during the dyeing process. Factory waste water is to be treated with pigment precipitants, and the sedimented waste dyes are dehydrated by filter press to form a wet cake which can be disposed of by landfill or public is therefore unlikely to be exposed to the notified chemical in effluent, recreational or drinking water. Unfixed Photopia Purple AQ-R/WPL404 will not be available to the public. Although widespread contact will occur with the dyed fabric, by this stage the notified chemical will be irreversibly bound to the fibre, from which absorption should be negligible. ENVIRONMENTAL EXPOSURE . Release The notifier states that the neat substance will not normally be discharged directly to the sewage system or aqueous environment. The notified substance has a fixation degree of 98.8%, when applied in the prescribed manner (but this rate may drop to 60 - 70% at 50% on the weight of fibre if conditions are varied) and is adhered by means of a fixing agent-resin (a report has been supplied to support the amount of exhaustion of dye). Release of unfixed dye to the sewers should therefore be negligible. The dyes and pigments are disposed of at the colouring factories with the waste water which is treated in the water treatment area. This area employs the coagulation process which coagulates dyes and pigments in the water by the application of alum, for example.
An industrial ventilation fan is intended to be used to remove but significant amounts of the Photopia Purple AQ-R/WPL404 will not be vaporised. PUBLIC EXPOSURE There is a low potential for public exposure to Photopia Purple AQ-R/WPL404 during manufacturing notified chemical will be in paste form, minimising the formation of dusts. Photopia Purple AQ-R/WPL404 is of low solubility in water and has a very low vapour pressure, so will not be discharged to the atmosphere during the dyeing process. Factory waste water is to be treated with pigment precipitants, and the sedimented waste dyes are dehydrated by filter press to form a wet cake which can be disposed of by landfill or public is therefore unlikely to be exposed to the notified chemical in effluent, recreational or drinking water. Unfixed Photopia Purple AQ-R/WPL404 will not be available to the public. Although widespread contact will occur with the dyed fabric, by this stage the notified chemical will be irreversibly bound to the fibre, from which absorption should be negligible. ENVIRONMENTAL EXPOSURE . Release The notifier states that the neat substance will not normally be discharged directly to the sewage system or aqueous environment. The notified substance has a fixation degree of 98.8%, when applied in the prescribed manner (but this rate may drop to 60 - 70% at 50% on the weight of fibre if conditions are varied) and is adhered by means of a fixing agent-resin (a report has been supplied to support the amount of exhaustion of dye). Release of unfixed dye to the sewers should therefore be negligible. The dyes and pigments are disposed of at the colouring factories with the waste water which is treated in the water treatment area. This area employs the coagulation process which coagulates dyes and pigments in the water by the application of alum, for example.
NA119FR.docx