The crew of the international space station has been measuring the levels of toxic benzene in the Russian Zvezda module by using an American appliance in an attempt to discover the source of His appearance, told NASA. in may, the Russian space Agency told the Last news about the increase in the concentration of benzene in the atmosphere of the station, which does not exceed the maximum allowable rate does not threaten the crew. Later in the week the atmosphere of the Russian and American segment will be separated in order to understand exactly where is the source of the benzene. Benzene is a colorless liquid with a specific sweet smell. Included in the fuel composition and is used for the production of drugs, plastics, synthetic rubber and dyes. Toxic and carcinogenic. in March of 2019 After arrival on the ISS unmanned spacecraft Crew Dragon air jets revealed the high content of isopropyl alcohol in the atmosphere of the ISS - about six milligrams per cubic meter. according to instructions from the Ground Crew included air purification system, because of this, the concentration decreased approximately To 2 milligrams per cubic meter. Before docking, the Crew Dragon, it was a tenth of a milligram, After decreased. Later Russia sent to NASA comments in connection with a hit of isopropyl alcohol to the atmosphere of the ISS After the arrival of Crew Dragon. currently work on the ISS Russian cosmonauts Anatoly Ivanishin and John Wagner, as well as American astronaut Christopher Cassidy, Douglas Hurley and Robert Behnken. in March of 2019 After arrival on the ISS unmanned spacecraft Crew Dragon development of the American organization SpaceX Elon musk, the station Crew felt an unusual smell. Air jets revealed the high content of isopropyl alcohol in the atmosphere of the ISS. Its concentration was about 6 milligrams per cubic meter. at the direction of land experts the Crew including air purification systems, because of this, the concentration decreased approximately To 2 milligrams per cubic meter. Before docking, the Crew Dragon, it was a tenth of a milligram per cubic meter. After undocking of the ship concentration decreased. in may 2019, the head of the cosmonaut training Center Pavel Vlasov told Last news that the Russian Federation has sent to NASA comments in connection with a hit of isopropyl alcohol to the atmosphere of the ISS After docking of the ship's Crew Dragon. <span style="color:darkgray