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Technology // Tin Chemicals

Tin Chemicals

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Rockwood's tin-containing 'Solaplex' pigments receive FDA approval for use in food contact applications

Post By: Paul Cusack on Tuesday, 14 May 2013

Rockwood Pigments' 'Solaplex' bright yellow - orange inorganic pigments have been granted food contact approval by the US Federal Drug Administration (FDA). These eco-friendly rutile tin zinc oxide colours were introduced to the market more than a decade ago and are now well established as non-toxic alternatives to lead chromates and other heavy metal containing pigments. Rockwood claim that new regulatory concerns over nickel-containing pigments will further extend uses for Solaplex colours, including specialised applications involving indirect food contact,...

Self-cleaning tin oxide antimicrobial coatings on glass

Post By: Paul Cusack on Thursday, 14 March 2013

Researchers in Germany have developed a novel method for depositing homogeneous, thin and transparent biomimetic SnO2 coatings on glass surfaces. The resulting bio-enabled tin oxide film is highly photoactive, generating superoxide radicals upon sunlight exposure, leading to strong antimicrobial activity. Upon illumination, the biomimetic SnO2 coating exhibits a switchable amphiphilic behaviour which, in combination with its photoactivity, effectively creates a self-cleaning surface. These intrinsic self-cleaning properties are expected to lead to the development of new, protective anti-fouling coatings...

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