STEM ≥ lead-based pigment in art of Japan
#art #ukiyo-e #pigment #chemistry #chemie #metallurgy #metallurgie
LEAD-BASED PIGMENT IN ART OF JAPAN
The use of lead-based paint in traditional Japanese art and decoration is called "mitsuda-e" (密陀絵). -- see JAANUS (Japanese Architecture and Art Net Users System), "Mitsuda-e" http://www.aisf.or.jp/~jaanus/deta/m/mitsudae.htm
Litharge or massicot are common names for the yellow lead oxide pigment used in artists' paint. This is also known as Mitsuda-sō (密陀僧) in Japan. -- see "Traditional yellow pigments in Japan." https://printsofjapan.wordpress.com/category/dyes/page/2/; and see JAANUS, "Mitsudasou" http://www.aisf.or.jp/~jaanus/deta/m/mitsudasou.htm
"A heavy yellow powder composed of lead monoxide. Litharge is prepared as the oxidized product of molten lead that has been stirred or atomized to incorporate air then cooled and ground to form the yellow powder. Massicot, another crystalline form of lead monoxide, occurs naturally but can also be made by heating lead carbonate to 300C. Litharge is lightly more orange than massicot due to some formation of red lead oxide .... They were used as a yellow pigments in paints and glazes." -- see CAMEO (Conservation and At Materials Online), "Litharge" http://cameo.mfa.org/wiki/Litharge; and see "Litharge lead oxide" https://www.nikitaindustries.com/litharge-lead-oxide-3841370.html
CURRENT RESEARCH: There is interest in finding alternative pigments which can be used in lieu of mitsudasou. This research is informed by concerns about environmental pollution and health safety issues. -- see Nakagawa, "Kyojo Iwa Enogu" http://nakagawa-gofun.co.jp/english/begin/kyojo.html
QUESTION: Did you know that lead oxide was used in traditional Japanese arts and crafts? Did you know that lead pigment can be yellow or orange -- not only white?
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QOTO = Question Others to Teach Ourselves?
@chikara tbh wanna say Politics ≥ STEM
https://en.wikipedia.org/wiki/Lead_paint#Regulation they found out about toxicity of lead in 1900.. yeah i presume some found out way earlier, but there... And banned when? 1977 for the US.
And they lead in oil. Also only reduced in the 70s. And only removed more recently, they're still selling the stuff in 3rd world countries with it. (ditto smoking) https://www.thenation.com/article/secret-history-lead/
And climate change was known about, researched by oil companies themselves, also since the 70s.
@chikara didn't know the japanese used it, or that Lead oxide has these colors.. Not surprising they used it because relatively convenient paints for all the different colors is relatively new.
Btw, though searching, i find people basically hating on Thomas Midgley. On the other hand, did see an article once basically talking about him has blundering into his disasterous inventions. But no doubt, they knew, they were told, repeatedly.
@jasper Thanks for the feedback, especially because you drew my attention to Thomas Midgley -- see Wikipedia "Thomas Midgley Jr." https://en.wikipedia.org/wiki/Thomas_Midgley_Jr.; and see "List of inventors killed by their on inventions"
https://en.wikipedia.org/wiki/List_of_inventors_killed_by_their_own_inventions
SOCIAL MEDIA VENUE. If I understand correctly, QOTO is a social media venue; and -- tbh -- the underlying intent in each of my posts is social.
Think about it: In each post, I'm only working though a half-baked idea sparked by something small. And I'm looking for any kind of feedback that might help me find ways to move outside the box of my own thinking.
OUTSIDE-THE-BOX QUESTIONS. With each post, I'm sharing a work-in-progress, asking questions with a bit of a STEM-related twist. And I'm bringing together a few hyperlinks that establish a wider foundation for more outside-the-box questions.
In response, your words have sparked questions and suggested additional research topics. Good. I'm grateful
@chikara for me it's an inside the box question, but glad i could contribute.
I generally like you're promiting the idea of researching, but think finding out how reality works is such a tricky thing.. Ah well, just do our best..