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Physical & Chemical properties

Melting point / freezing point

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The melting point of slags is correlated to the constituents in the processed ores. As the composition of ores and consequently slags varies in broad ranges the slags are considered to be UVCB substances. Consequently, it is impossible to define a melting point for slags. Considering the production process (smelting at 1200 °C) and taking inot account the melting points of common slags (available via ECHA´s website for registered substances), the melting point of slags, tin-smelting can be expected to be above > 450 °C.
Against this background experimental determination of the melting point of slags, tin smelting is considered to be not scientifically justified under REACH.

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