Originally Posted By: Greasyfingerails
this came from MSDS
Mixtures
Chemical name Common name and synonyms
DISTILLATES (PETROLEUM), HYDROTREATED LIGHT NAPHTHENIC 59.7 - 99.9%
DISTILLATES (PETROLEUM), HYDROTREATED LIGHT PARAFFINIC 0 - 40%
DISTILLATES (PETROLEUM), SOLVENT-DEWAXED LIGHT PARAFFINIC 0 - 20%
Material name: HyVolt II 4706 Version #: 02 Revision date: 05-06-2014 Issue date: 01-13-2014
CAS number
64742-53-6
64742-55-8
64742-56-9
SDS US 1/8
Chemical name Common name and synonyms
2,6-DI-TERT-BUTYL-P-CRESOL [BUTYLATED HYDROXYTOLUENE (BHT)]
CAS number
128-37-0 < 0.3
The only additive in most "inhibited" heat transfer fluids, which is the designation for transformer oil, is an anti-oxidant, or "oxidation inhibitor," or AO.
In this case it is the 2,6-DI-TERT-BUTYL-P-CRESOL [BUTYLATED HYDROXYTOLUENE (BHT)], an AO that has been used for eons.
If you look at the brochure, under "Production Technique" it says this is a hydrotreated naphthenic crude.