Regarding Best Ratio for using Zinc White/Titanium White CombinationApproveRejectUn-ApproveSubscribeUn-Unsubscribe
Question asked 2019-04-16 15:06:51 ...
Most recent comment 2019-04-19 15:48:58
Several authors have recommended using a combination of Zinc
White and Titanium White for use in landscape paintings especially for imagery
of clouds; ratios of varying amounts including one part Titanium to 3 parts
Zinc White. Book sources ranged from 1974 up to the present and written by established
I have personally used one product that offers a premade
mixture of the two whites. However, I would greatly like to learn of using
various ratios of Zinc White combined with Titanium White to achieve sky and
tinting effects in landscape paintings along with the potential risk of Zinc
White having a possible long term change.
Your ideas and suggestions are appreciated.
Answers and Comments
We would echo George O'Hanlon's comments and add that currently there is no established and verified safe level of zinc. In controlled tests, even a 3% level created very brittle films that were prone to cracking and delamination. Whether even lower levels, in the 1-2% range, will prove safer is an open question. However, at all of these lower levels, you are not going to see much impact on the transparency of the titanium white, or its color, which are often the properties being sought. At best you might have less yellowing. Ultimately the best white to use in painting, in terms of durability and permanency, remains lead white for a host of reasons that you can read about elsewhere.
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