Your international PARTNER FOR PROGRESS for Sodium solution

France | Paris | June 9, 2023 9:43 AM

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The strength of a leader company


Our strategy

To reinforce our position as worldwide leader for sodium metal and vanadium based catalysts.
To develop our presence on all continents and to supply a broad range of services associated with sodium and chlorine.
To widen our portfolio of products based on alkali metals.

MSSA is a ICIG company.



Our objectives

  • To supply chemical industries with an effective, flexible and competent service in 5 continents.
  • To continuously improve the quality of our products and creating value for our customers.
  • To completely assume our role as strategic supplier of dangerous products, while guaranteeing reliable and safe logistical services.
  • Transferring our know-how to our customers by helping them to correctly and very safely use our products and by providing them with training and high-quality technical assistance.
  • Developing our innovative abilities in the technical, logistical and marketing areas.
  • Guaranteeing our development by respecting the environment.

Creation of the company

LA VOLTA creates a hydroelectric station and a chlorine- soda electrolysis at Pomblière, Saint Marcel (Savoie – France).

Chlorine production

The company Société d’Electro-Chimie takes over LA VOLTA, and sets up the first plant in France for the liquefaction of chlorine at Pomblière.

Sodium production by molten soda

The plant starts producing sodium metal by electrolysis of molten soda.

Sodium production by molten sodium chloride

Production of sodium metal by electrolysis of molten sodium chloride.

Purified sodium for the French nuclear industry

The first delivery of highly purified sodium is made to the French nuclear industry.

Merger with PUK group

Pechiney Ugine Kuhlmann (PUK) is formed as a result of the merger with Pechiney.

Superphenix contract

A contract is signed for the supply of sodium to the SUPERPHENIX fast-breeder reactor.


Métaux Spéciaux becomes the only sodium supplier for the Japanese fast breeder reactor in Monju.


The Pomblière plant leaves Pechiney to become MSSA S.A., a subsidiary of International Alkaline S.A as a result of a Management Buy-Out carried out by the management with the backing of 3 financial shareholders.
ISO 9001 Certification.

Doubling of production capacity

The capacity for the electrolysis of sodium is doubled. MSSA, the only producer of sodium in Europe, becomes the world’s number one producer of sodium metal thanks to its technology, production capacity, output, product quality, logistic capacity and packaging portfolio.

Creation of the American subsidiary

Set-up of MSSA Company, the American subsidiary of MSSA, in charge of the sales and distribution of Métaux Spéciaux’s products in the United States. Start-up of a sodium logistic terminal in Texas and investment in a new sodium refining shop in Pomblière (SoPure).

Acquisition by Nisso

The Japanese Group Nippon Soda acquires Alkaline S.A.S. This industrial backing will allow MSSA Métaux Spéciaux and the Alkaline Group to continue its growth and innovation strategy with better opportunities.

Methylate plant at La Rochelle

Start of production at the plant at La Rochelle, with an innovative process developed by EnviroCat, a subsidiary 100% owned by Alkaline. This workshop produces sodium methylate for biodiesel and various applications in advanced chemistry. Its maximum capacity is 25,000 tons per year.

Chlorine purification unit

Start-up of a chlorine purification column to treat bromine and residues in order to make chlorine suitable for use in fine chemicals and pharmaceuticals, with a capacity of up to 40,000 t per year.

MSSA and EnviroCat merge.

A new chapter opens for the Alkaline group, which becomes a subsidiary of ICIG, a German group in the chemical sector.


Structure Ownership

Social name:  MSSA S.A.S

Commercial name:  METAUX SPECIAUX

Headquarters and factory: 111 rue de la Volta – Pomblière – 73600 SAINT MARCEL – France

The Management Committee consists of (from left to right)  : Jean-Loup Bourrier (Commercial Director), Dimitri Rimbert (President of Alkaline and MSSA), Damien Cota (Financial Director), Paul-Olivier Léon (Administrative and Social Director), Guillaume Chedal-Anglay (Technical Director).

MSSA S.A.S. is a subsidiary of Alkaline which is 100% detained by the German group ICIG.

MSSA Company is the wholly owned American subsidiary of MSSA S.A.S. It is in charge of the sales and distribution of MSSA Métaux Spéciaux’s products in the United States.


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Nisso Shoji (Taiwan) Co., Ltd.

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