Wesfarmers will sell its remaining 40 per cent stake in industrial gas producer ALWA to Air Liquide Australia, reaping a $95 million profit.

The chemicals, energy and fertilisers division of Wesfarmers is also offloading its associated interest in the Kwinana Industrial Gas Joint Venture (KIGJV) as part of the deal.

Air Liquide will now own 100 per cent of ALWA and KIGJV.

ALWA was a joint venture between Air Liquide Australia and Wesfarmers to service industrial and medical gases, gas equipment and welding products in Western Australia.

The business operates an air separation unit in Kwinana which produces oxygen, nitrogen and high purity argon for the West Australian and Northern Territory markets.