Originally Posted By: Gary Allan
http://householdproducts.nlm.nih.gov/cgi-bin/household/brands?tbl=brands&id=13005002
6/20/2002
Chemical CAS No / Unique ID Percent
o-Dichlorobenzene 000095-50-1 0-1
Stoddard solvent 008052-41-3 20-30
Hydrotreated heavy naphthenic distillate solvent extract 064742-52-5 70-80
After 6/2002
Chemical CAS No / Unique ID Percent
Stoddard solvent 008052-41-3 Distillates, petroleum, solvent-refined heavy naphthenic 064741-96-4 Distillates, petroleum, solvent-dewaxed heavy naphthenic 064742-63-8
http://householdproducts.nlm.nih.gov/cgi-bin/household/brands?tbl=brands&id=13005001
As we have discussed many times - there is more to MMO that what shoes up in the MSDS, but the Dichlorobenzene is what is causing the California labeling requirement.
The reason it calls out California is that the federal government has not proclaimed that dichlorobenzene causes cancer, but the state of California is forcing this addition because it "might" cause cancer (because it has a "benzene" in it), even though they have no testing to back that claim for the type of benzene MMO uses.
On another note, all gasoline has some form of benzene in it, the amount has just been regulated down over the years, but it still has it. This is one of the reasons MMO helps engines feel peppier - replaces some of the benzene that has been regulated out for more complete combustion, lubricity (EP additive because it is a chlorinated benzene), and cleaning.
Just FYI.