What's the molecular weight of the wash oil used for the absorption of benzene?

It's hard to know exactly what you mean..





you mean removing it from crude oil? I dug up this patent abstract and it isn't an oil at all it's a water based-salting and emulsification process that allows them to remove most of it:





Methods of diminishing the benzene content of the effluent wash water in a two stage crude oil desalting system are disclosed. The first stage desalter is operated at ';low';, near ambient temperatures with decreased mixing of crude oil and wash water and increased addition of demulsifier. The second stage is operated at ';hot'; temperatures of prior processes with increased mixing of the crude oil and wash water. The effluent wash water has a substantially diminished benzene content compared to prior two-stage desalting systems.





ref: http://www.freepatentsonline.com/5271841鈥?/a>What's the molecular weight of the wash oil used for the absorption of benzene?
If I told you we'd both know!