Perfectly ordinary 103's were used for vinegar transport, so why not
an insulated 103? I don't think very much can be gleaned from a blurry
photo of a more or less generic tank car other than the owner advertised
paints, chemicals and food products. If it really is a Dupont tank car
as some one said, maybe it is used to transport acetic acid which is
basically vinegar without the water component but is a weak acid and
doesn't require the same handling as hydrochloric or sulfuric acids.

Tim O'Connor