Sasol is the world’s largest oxygen producer located in Secunda, South Africa.
The acquisition raised his ownership interest in the company to 65.7 percent from 32.29 percent.
The shares of the leading South African lender have increased by more than 20 percent since April 1.
The move could jeopardize the company’s future.
The facility with a capacity of 1 million tonnes per annum.
Econet Wireless Zimbabwe's share price has risen by 187 percent since January.
The group already has a 1.5-million-tonne cement grinding facility in the Francophone West African country.
Al-Amoudi's net worth has dropped from $7.56 billion to $7.54 billion since the start of the year.
The brothers disappeared shortly after they announced a breach in company operations in April.
The bank’s share price has risen by 9.42 percent since Jan. 1.
