Azimio leader Raila Odinga has chided the government over the move to privatise Kenya Pipeline Corporation.
KPC is among 11 state corporations the government has lined up for privatisation.
Speaking on Tuesday, Raila said the move is ill-advised and that the corporations should not be sold.
"The government wants to sell state corporations, Kenya Pipeline Corporation and National Oil Corporation are among them. KPC is a strategic investment that should not be sold under any circumstances. But the government wants to sell it," he said.
The Azimio boss said that he will give a detailed update on the privatisation of the entities in the coming days.
Other corporations to be sold are the Kenyatta International Convention Centre (KICC) Kenya Literature Bureau, National Oil Corporation, Kenya Seed Company Limited, Mwea Rice Mills, Western Kenya Rice Mills Limited, Kenya Pipeline Company, New Kenya Cooperative Creameries, Kenya Vehicle Manufacturers Limited, Rivatex East Africa Limited and Numerical Machining Complex.
The government revealed that one of the reasons it was selling the Kenya Literature Bureau and KICC was because the two parastatals needed to be incorporated into limited companies.
On the other hand, National Oil Company is being privatised largely because of poor financial performance.
The government is also looking to dispense with the corporation because of negative working capital and low liquidity.
Kenya Seed Company was identified as a profitable and mature industry that was ready to be sold to the private sector.
Kenya last privatised a state-owned company in 2008 with an initial public offering for 25 per cent of the shares in telecommunications firm Safaricom.
"We have identified the first 35 companies that we are going to offer to the private sector. We have another close to 100 we are working with financial advisers on what to do," President William Ruto said when opening the ceremony African Stock Exchanges Association's annual meeting in Nairobi.
