This chemical is called Gas oils (petroleum), hydrodesulfurized, and its CAS registry number is 64742-79-6. With the classification code TSCA UVCB, its product categories are Reference Materials Certified by The Japan Petroleum Institute; Analytical Chemistry. It's a complex combination of hydrocarbons obtained from a petroleum stock by treating with hydrogen to convert organic sulfur to hydrogen sulfide which is removed. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C13 through C25 and boiling in the range of approximately 230.degree.C to 400.degree.C (446.degree.F to 752.degree.F). 

When you are using this chemical, please be cautious about it as the following: It may cause cancer. Avoid exposure - obtain special instructions before use. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.).