Логотип Сигма-Газ
англ. версия русск.версия

Oil benzene GOST 9572-93

Indicators Standard
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1 visual appearance and colour clear liquid that contains no impurities and water, which is not darker than the solution 0,003 g К2Сr2О7 in 1 dm3 of water
2 density at 20 оС, g/cm3 0,878-0,880 0,877-0,880
3 limits of distillation of 95%, оС, max (including the boiling point of pure benzene of 80,1 оС) 0,6 0,6
4 crystallization temperature, оС, not lower than 5,35 5,30
5 mass fraction of main substance, %, min 99,7 99,5
6 mass fraction of impurities, %, max:
n-heptane
methylcyclohexane + toluene
methylcyclopentane
toluene
 
0,06
0,13
0,08
-
 
-
-
-
-
7 colouring of sulfuric acid, number of reference scale, max 0,10 0,15
8 mass fraction of total sulfur , %, max 0,0001 0,00015
9 reaction of water extract neutral