Assertion: pure toluene | /r/MadeOf | less than 0.3 % benzene
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text: 20 − 60 years) who had been exposed to pure toluene (containing less than 0.3 % benzene) in concentrations of 200 to 400 ml/m 3 during 10 to 25 years and comparison with 100 non‐exposed persons did not reveal an increased incidence of liver damage (Suhr 1975 ).