Does E10 gasoline separate from water if left for a long time?

Despite its many advantages, many people wonder whether E10 gasoline will separate from water if stored for a long time and how long it can be safely stored.

What is E10 gasoline?

E10 gasoline is a blend of approximately 90% traditional mineral gasoline and 10% fuel ethanol. Ethanol is an alcohol derived from biomass such as corn, sugarcane, or cassava, used to reduce carbon emissions and increase the proportion of renewable fuels.

Thanks to this bio-component, E10 gasoline is considered to have the potential to reduce environmentally polluting emissions compared to traditional gasoline.

Does E10 gasoline separate from water when stored for a long time?

Unlike conventional gasoline, E10 gasoline contains ethanol, which has the ability to absorb moisture from the air. Ethanol is essentially a polar alcohol, so it is able to dissolve water, while conventional gasoline has almost no such property.

You may also like

Vinachem is gradually connecting to the international chemical value chain.(Chinhphu.vn) - In their strategy of diversifying supply chains and expanding international markets, industrial enterprises are no longer seeking only individual trade contracts but are aiming to build in-depth cooperation networks. The working visit of the Vietnam Chemical Corporation (Vinachem), led by Chairman of the Board of Members Phung Quang Hiep, to the Republic of South Africa from June 22-26 demonstrates this approach through a work program prepared with multiple levels of objectives, from raw material sourcing and markets to establishing a foundation for industry cooperation.

The US proposes shortening the certification process for commercial aircraft.According to the FAA, harmonizing certain regulations with EASA will help manufacturers shorten lead times, reduce costs, and simplify processes while ensuring or improving safety levels.

Tay Ninh accelerates progress on the Ho Chi Minh City Ring Road 3 and Ring Road 4 projects.Tay Ninh is focusing its resources on accelerating the implementation of key national transportation projects, especially the Ring Road 3 and Ring Road 4 of Ho Chi Minh City, in order to create momentum for socio-economic development, strengthen regional connectivity, and expand development space for the Southeast region.

E10 gasoline contains 10% ethanol. (Image: AI)

According to the Ministry of Industry and Trade , practical tests have shown that E10 gasoline is not as prone to phase separation as many people fear. The agency cited test results showing that under conditions of storage in glass test containers, E10 gasoline did not experience phase separation after 3 months. This is also the result recently announced by Petrolimex.

Globally , a 2016 report by the National Renewable Energy Laboratory (NREL) in the US indicated that even under consistently high temperatures and humidity, E10 bioethanol requires approximately three months or more to absorb enough water for water separation to occur.

Fuel experts from the U.S. Department of Energy suggest that the risk of water separation is often more noticeable in cases where fuel is stored for extended periods in humid environments, such as on boats, generators, infrequently used vehicles, or in improperly sealed containers. In these situations, moisture can accumulate over time, increasing the risk of water contamination exceeding the E10 solubility limit.

Therefore, the Ministry of Industry and Trade advises users not to store E10 gasoline for too long and to ensure that the storage tank is always tightly sealed to prevent water or moisture from entering the fuel.

United States - Vietnam: Don't miss

Vietnam encourages US businesses to expand investment in high technology.On the morning of June 26th, at the Government Headquarters, Deputy Prime Minister Ho Quoc Dung received Mr. Jeff Place, Supply Chain Director of Coherent Group (USA). During the meeting, the Deputy Prime Minister affirmed that Vietnam encourages US businesses to expand investment, especially in high-tech, innovation, and semiconductor industries.

Encourage U.S. businesses to expand investment in high-tech sectors.Deputy Prime Minister Ho Quoc Dung said that Vietnam welcomes US businesses to continue expanding their operations in Vietnam, especially in high-tech industries and sectors with high added value.

Vietnam and the United States strengthen cooperation in addressing the consequences of war.VTV.vn - On June 22, General Secretary and President To Lam received Acting Secretary of the US Navy Hung Cao.

Instead, fuel should only be used for the appropriate amount of time and stored properly. For vehicles that are used infrequently, owners should start the engine periodically, check the fuel level, and perform maintenance as recommended by the manufacturer.

Source: https://vtcnews.vn/xang-e10-de-lau-co-bi-tach-nuoc-ar1022820.html