Reactivity/Stability: no known chemical reactions take place Particle size distribution: 95% < 500µm 7-8% < 32µm Comments on Physico-Chemical Properties Since the polymer is a high molecular weight species, its partition co-efficient is estimated to be > 6 (because of its compact structure and molar mass over 600), and as it has a large molecular cross-section (>950 pm), it is not expected to cross biological membranes. Dissociation in water is unlikely on the basis of chemical structure. The adsorption/desorption rates were not determined but their relevance is reduced by the polymer’s low water solubility and use pattern. PURITY OF THE CHEMICAL Degree of purity: 96% none Toxic impurities: Non-toxic impurities (> 1% by weight): < 4% Maximum content of residual monomers: < 0.2% none Additives/Adjuvants: INDUSTRIAL USE Hostavin N30 is intended to be used in plastics applications as a UV light stabiliser which also possesses antioxidant properties, especially for use in polyolefins (polyethylene, both low density and high density, and polypropylene). Hostavin N30 is to be used in cases where precautions against the harmful influence of UV radiation during outdoor exposure have to be adopted. Additionally, Hostavin N30 can be used as a stabiliser against thermal degradation during processing. Typical applications are films, fibres, car bumpers, bottle crates, garden furniture, etc The estimated import of Hostavin N30 containing the notified chemical is greater than 1 tonne per annum in the first five years. OCCUPATIONAL EXPOSURE The notified chemical will be imported into Australia in 25 kg polyethylene bags within fibreboard cartons. A number of additives, including Hostavin N30 at levels normally up to 1%, are added to a mixer together with the appropriate powdered polyolefin grade. Additives may be
Reactivity/Stability: no known chemical reactions take place Particle size distribution: 95% < 500µm 7-8% < 32µm Comments on Physico-Chemical Properties Since the polymer is a high molecular weight species, its partition co-efficient is estimated to be > 6 (because of its compact structure and molar mass over 600), and as it has a large molecular cross-section (>950 pm), it is not expected to cross biological membranes. Dissociation in water is unlikely on the basis of chemical structure. The adsorption/desorption rates were not determined but their relevance is reduced by the polymer’s low water solubility and use pattern. PURITY OF THE CHEMICAL Degree of purity: 96% Toxic impurities: none Non-toxic impurities (> 1% by weight): < 4% Maximum content of residual monomers: < 0.2% Additives/Adjuvants: none INDUSTRIAL USE Hostavin N30 is intended to be used in plastics applications as a UV light stabiliser which also possesses antioxidant properties, especially for use in polyolefins (polyethylene, both low density and high density, and polypropylene). Hostavin N30 is to be used in cases where precautions against the harmful influence of UV radiation during outdoor exposure have to be adopted. Additionally, Hostavin N30 can be used as a stabiliser against thermal degradation during processing. Typical applications are films, fibres, car bumpers, bottle crates, garden furniture, etc The estimated import of Hostavin N30 containing the notified chemical is greater than 1 tonne per annum in the first five years. OCCUPATIONAL EXPOSURE The notified chemical will be imported into Australia in 25 kg polyethylene bags within fibreboard cartons. A number of additives, including Hostavin N30 at levels normally up to 1%, are added to a mixer together with the appropriate powdered polyolefin grade. Additives may be
NA239FR.docx