Caustic Soda

Trusted caustic soda suppliers in South Africa

The chemical industry in South Africa dates to the third quarter during the 19th century. It has been described as the industrial revolution within South Africa, leading to the proliferation of industries, forever changing the way that South Africans lived and worked.

Chemi is a trusted caustic soda supplier in South Africa. 

With the desire to exploit opportunities which were provided by the mining of diamonds and gold which led to the emergence of a strong and diversified industrial sector, with the sustained access to these minerals, an explosives industry was created.

This led to the chlor-alkali industry as well as industrial specialty and fine chemicals sectors. The chemical industry in South Africa is the largest in Africa, consisting of several key players such as suppliers of chemicals, products, and a variety of services.

Leading this, Chemi is a reputable company strategically positioned to serve an array of customers across the country. With Chemi, customers have access to an array of products for sale at affordable, competitive prices which they can order from the official website using the channels provided.

What is Caustic Soda and what are its uses?

Caustic Soda is the typical name for sodium hydroxide (NaOH), also known as lye. This common name is derived from its chemical identity as sodium hydrate along with it being well-known for its corrosiveness.

In its pure form, caustic soda is a waxy and white sold which readily absorbs water, forming aqueous solutions. It is commercially available as sodium hydroxide monohydrate, or NaOH-H2O.

Caustic Soda is prepared in a variety of ways including:

  • Castner-Kellner process – by performing the electrolysis of brine solution to get sodium hydroxide.
  • Nelson Diaphragm cell
  • Loewig’s process

Caustic Soda uses include the following:

  • As a cleansing agent in the manufacturing of washing soda.
  • It can be used as a reagent in laboratories.
  • It can be used to prepare soda lime.
  • It can be used to extract aluminium by purifying bauxite.

Caustic Soda is used in many industries in South Africa including the manufacturing of pulp and paper, textiles, drinking water as well as soap, detergents, and even drain cleaner that you can buy from any grocery stores.

Types of Caustic Soda

Caustic Soda is available in two forms, either as caustic soda lye or caustic soda solids. The solid form of caustic soda is that of caustic soda flakes, obtained by evaporating liquid caustic soda.

Caustic Soda prices in South Africa will be determined by the type of caustic soda and the volume being ordered. The price on caustic soda can start from as little as R40.

No, the difference between caustic soda and lye, is that lye refers to either sodium hydroxide or potassium hydroxide, whereas caustic soda refers only to sodium hydroxide.

Caustic soda can be neutralised by using vinegar as it is an acetic acid. To neutralise, for instance, 1Kg of NaOH, you will need atleast 30L of vinegar.

Yes, caustic materials can cause a chemical reaction that produces heat and results in the melting or warping of pipes.

Yes, it can attack aluminium, chrome, and plastic pipes.


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