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Production capacity 45 tonnes of caustic soda flakes per day · direct loading from the Mahshahr plant

03Consuming Industries Industries

Process

Caustic soda sits at the heart of hundreds of industrial processes, from soap and fabric to refineries and treatment plants. Find your industry's application and see which grade and packaging suits your production line best.

Grade selection guide Free technical advice
  • 8key industries
  • 98.5%Sodium hydroxide purity
  • 45 tDaily production capacity

01Applications Applications

Find your industry

For each industry we have summarised the main applications and the recommended grade. See technical details, dosage and process notes on each industry's page.

  • Textiles TEXTILES

    Textiles

    Preparing cellulosic fibres before dyeing and finishing.

    • Mercerising cotton
    • Scouring and removing natural impurities
    • Preparation before dyeing
    Grade 98–99%
  • Pulp & paper PULP & PAPER

    Pulp & paper

    Separating lignin from wood fibre and recycling paper.

    • Kraft pulping
    • De-inking recycled paper
    • White liquor preparation
    Grade 98–99%
  • Water & wastewater treatment WATER TREATMENT

    Water & wastewater treatment

    pH control and metal removal in municipal and industrial treatment plants.

    • pH correction in effluent treatment
    • Precipitation of heavy metals
    • Regeneration of ion-exchange resins
    Grade 98–99%
  • Aluminium & metals ALUMINIUM & METALS

    Aluminium & metals

    The Bayer process, and surface preparation and finishing of metals.

    • Alumina extraction in the Bayer process
    • Etching and degreasing metal surfaces
    • Pre-treatment before anodising
    Grade 98–99%

02Selection guide Selection guide

Which grade for which process?

Every process differs in its sensitivity to carbonate, chloride and iron. This table is a starting point for your choice; make the final decision by testing a sample on your own line.

Grade & packaging guide

Application × Grade × Packing
Caustic soda selection guide by industry, use, impurity sensitivity, recommended grade and packaging
Industry Typical use Impurity sensitivity Recommended grade Packaging
Textiles Mercerising cotton, Scouring and removing natural impurities High 98–99% 25 kg bag
Pulp & paper Kraft pulping, De-inking recycled paper Low 98–99% 25 kg bag
Water & wastewater treatment pH correction in effluent treatment, Precipitation of heavy metals Low 98–99% 25 kg bag
Aluminium & metals Alumina extraction in the Bayer process, Etching and degreasing metal surfaces Medium 98–99% 25 kg bag

The final choice depends on your process, water quality and finished-product specification. Request a trial sample before buying in bulk.

Trial samples for industrial buyers

Choose the right grade with our technical team

Request a quote 061-5236 3427