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MITRA Forum Question Details

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  • Old Holland Zinc whiteApproveRejectUn-ApproveSubscribeUn-Unsubscribe
    Question asked 2019-07-20 19:05:21 ... Most recent comment 2019-07-21 21:47:30
    Oil Paint
    Question

    ​The Old Holland safety data sheet for their zinc white oil paint lists alongside 70-90% zinc oxide.   3-5% titanium dioxide.  Which strikes me as an interestingly odd thing to do.  Would there be any advantage to adding such a small amount of titanium white to an otherwise pure zinc white paint?

    Marc

Answers and Comments
  • EditDeleteModerator Answer

    Probably to add a bit of opacity to an otherwise rather transparent/translucent white oil paint. Titanium white is substantially more opaque than lead white, let alone zinc white.

    Brian Baade
    2019-07-20 21:09:46
  • ApproveRejectUn-ApproveUser Comment

    ​Yes, certainly the added titanium would make it more opaque, but why would you want that?  One's starting with a white distinct and different than either of the other two (also different from each other), but still popular despite the issue with cracking and delamination, and now, lets make it less different by mixing it with another white that you could do so yourself if you wanted to.  But if you want a white without this premix, well you'll just have to buy someone elses.  

    Of course I could always ask Old Holland themselves.  however it's not a white I personally use, so its not killing me to know.  I just wondered if there was a special technical reason beyond affecting the opaqueness and tinting strength.

    Thanks for your reply

    Marc

    2019-07-21 21:47:30
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