MOSCOW- Russia's Rosneft has set the euro as the default currency in all its export contracts including for crude oil, oil products, petrochemicals as well as liquefied petroleum gas, tender documents showed.

The switch happened in September, Rosneft's website for tender documents showed.

Rosneft did not reply to a Reuters request for immediate comment. Rosneft is Russia's top oil exporter.

(Reporting by Olga Yagova; additional reporting by Natalia Chumakova in Moscow and Florence Tan in Singapore; editing by Katya Golubkova and Jason Neely) ((Olga.Yagova@thomsonreuters.com;))