Trying to understand a Safety Data Sheet

[Shel_B]

Here's a list from a Mobil SDS, chosen because it shows quite a few different chemicals. Perhaps someone can help me understand what they all are. I understand that the first item is PAO but I'm unclear, and only guessing, about the others. Thanks!:

 

[MolaKule]

For you MSDS watchers, here are some base oils and additives with CAS numbers and descriptions:

NOTE: The CAS numbers listed are not all inclusive of what is out there, but are basic CAS numbers.

Mineral Paraffininc Base Oil - 64742-54-7; VI of +94 to 120, any group, is a generic CAS number for paraffininc base oils;

Mineral Naphthenic Base Oil - 64741-96-4; VI of ~15.

Mineral Aromatic Base Oil - 64742-03-7; VI of ~185. Hydrotreated paraffininc, heavy - 64742-52-5

Hydrotreated paraffinic, light - 64742-53-6

Some PAO Producers: Chevron Phillips Synfluid PAO 4 cSt, Exxon Mobil SpectraSyn 4 cSt PAO, INEOS Durasyn 164 4 cSt PAO Diester - 28472-97-1; VII's average +170. PAO's: 68649-12-7, 68037-01-4, 163149-29-9, 151006-63-2, 151006-62-1, 151006-60-9, 157707-86-3 with VII's of +155 or greater:

Polyol Esters: 68441-94-1,

Pentaerythritol ester of heptanoic and isopentanoic acids 118685-29-3,

Mixed pentaerythritol esters of isononionic and heptanoic acids 77-99-6, TrimethylPropane (TMP) 68515-47-9,

1,2-Benzenedicarboxylic acid, di-C11-14-branched alkyl esters, C13-rich 91050-89-4,

Fatty acids, C8-10, triesters with trimethylolpropane (TMP) VII Copolymers - 127883-08-3

Additives: ZDDP Type Adds: 68649-42-3, XXXXX-46-6.

Calcium Sulfonates: 61789-86-4 Moly Dithiophosphate - 68958-92-7 or 68958-92-9

Moly Disulfide Powders - 1317-33-5

Here is what happens: EM, Chevron or Shell or whomever will come out with an oil (hydrotreated, isomerized, etc) and have it CAS registered with a different (new) number. I.E., New oils produced under a specific process may have new CAS numbers.

However, CAS numbers do not necessarily equate to the specific process type. Some CAS Numbers for Group III hydrocracked hydroisomerized Group III are 178603-64-0, 178603-65-1, 178603-66-2.

The designation of Paraffinic, Naphthenic, or Aromatic simply describes the structure of the oil molecule. It has nothing to do with waxes, solvents, or being smelly.

And let's remember that MSDS are Safety Data Sheets and do not reflect the actual formula, only what the Manf. has to declare for safety reasons.

A formulated oil is a balanced mix of various base oil groups and of various base oil viscosities and with DI additives to make a finished lubricant for a specific application.

Read and study your car's Operating Manual and attempt to match up the specifications and viscosity grade with an oil from your local auto parts supplier.

and

GTL?

It's not in the acronym list, what does it mean?

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