Straight from the Mobil MSDS page:
"1-DECENE, HOMOPOLYMER HYDROGENATED
68037-01-4
10 - < 20%
H304
DISTILLATES, HEAVY, C18-50 - BRANCHED, CYCLIC AND LINEAR
848301-69-9
20 - < 30%
H304
SEVERELY HYDROTREATED HEAVY PARAFFINIC DISTILLATE
64742-54-7
30 - < 40%
H304
SOLVENT DEWAXED HEAVY PARAFFINIC DISTILLATE
64742-65-0
1 - < 5%
H304"
-http://www.msds.exxonmobil.com/IntApps/psims/SearchResults.aspx TAB 3