Damascus,

I appreciate your response re. the use of Antimony Chloride.

I remember a comment about it's attempted use & and abandonment in one of Don Masters books.

Reading between the lines I'm thinking it was a "quick & dirty"
way of darkening light colored wood w/o the time & effort required by the traditional "red oil" method which does take some time for drying.

However, I would still like to give it a try on a piece of scrap just to see what the results are.