Worker exposure is expected by the notifier to be 'minimal' when closed systems are used and recommendations for ventilation and protective gear are followed. PUBLIC EXPOSURE MDI is listed in the Australian Inventory of Chemical Substances and is covered by the Australian Code for the Transport of Dangerous Goods by Road and Rail (ADG code)(3). Since this compound is present in excess in the MDI-polyol prepolymer product, transport of the product is to be pursuant to the ADG code. Liquid waste is to be disposed of by a company licensed to incinerate MDI liquid. Solid waste will be sent to an approved landfill site for burial. Used container drums will be decontaminated by water prior to disposal (landfill or drum recycling) and rinse fluids will be disposed of according to state regulations (eg. treatment in an approved waste water facility). Public exposure to the raw material will therefore be low. During the production of manufactured goods, MDI-polyol prepolymer is further polymerised, forming polyurethane elastomers, resulting in negligible public exposure. ENVIRONMENTAL EXPOSURE . Release The notified product is stated to replace existing MDI prepolymer products currently used for this purpose. MDI-polyol prepolymer will be processed at the two sites utilising a closed system reaction injection moulding machine. This involves emptying the product drums into the machine's reservoirs, injecting liquid product and further polyol to an enclosed pressurised mould cavity where polymerisation occurs to endpoint/curing after a few minutes. When the moulded polyurethane elastomer components are removed from the mould, the notified substance is considered to be fully reacted. In the event of accidental spillage, the 1,1'-methylenebis (isocyanatobenzene) (MDI) component of MDI-polyol prepolymer could cause an immediate terrestrial or aquatic environmental hazard. Contamination of drains or water ways should be avoided by containing and absorbing the polymer mixture with wet sand or soil.
Worker exposure is expected by the notifier to be 'minimal' when closed systems are used and recommendations for ventilation and protective gear are followed. PUBLIC EXPOSURE MDI is listed in the Australian Inventory of Chemical Substances and is covered by the Australian Code for the Transport of Dangerous Goods by Road and Rail (ADG code)(3). Since this compound is present in excess in the MDI-polyol prepolymer product, transport of the product is to be pursuant to the ADG code. Liquid waste is to be disposed of by a company licensed to incinerate MDI liquid. Solid waste will be sent to an approved landfill site for burial. Used container drums will be decontaminated by water prior to disposal (landfill or drum recycling) and rinse fluids will be disposed of according to state regulations (eg. treatment in an approved waste water facility). Public exposure to the raw material will therefore be low. During the production of manufactured goods, MDI-polyol prepolymer is further polymerised, forming polyurethane elastomers, resulting in negligible public exposure. ENVIRONMENTAL EXPOSURE . Release The notified product is stated to replace existing MDI prepolymer products currently used for this purpose. MDI-polyol prepolymer will be processed at the two sites utilising a closed system reaction injection moulding machine. This involves emptying the product drums into the machine's reservoirs, injecting liquid product and further polyol to an enclosed pressurised mould cavity where polymerisation occurs to endpoint/curing after a few minutes. When the moulded polyurethane elastomer components are removed from the mould, the notified substance is considered to be fully reacted. In the event of accidental spillage, the 1,1'-methylenebis (isocyanatobenzene) (MDI) component of MDI-polyol prepolymer could cause an immediate terrestrial or aquatic environmental hazard. Contamination of drains or water ways should be avoided by containing and absorbing the polymer mixture with wet sand or soil.
NA87FR.docx