NASIL® sodium silicate is commonly used in the textile sector in two different processes:

  • In fibre bleaching processes with hydrogen peroxide. The silicate keeps pH constant and precipitates the metals that catalyze the hydrogen peroxide destabilisation process.
  • In fibre and fabric dyeing processes. The silicate allows lower temperatures to be used at a constant pH and with less water. It also helps to obtain a more even colour between different batches as well as substantially improving colour fixing in fibres.

SUFAL® aluminium sulphate is extensively used in the leather tanning sector, in a process known as aluminium tanning. This process subjects leather to a salt bath at an acid pH, where the tanning Al mineral easily diffuses inside the leather, resulting in colourless tanning and providing firm leather.

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