Talk:Naples yellow
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Chemical composition of Naples yellow.[edit]
Wiberg says its Pb3(SbO4)2. In a 2008 paper on the X-Ray analysis of a van Gogh painting (doi: 10.1021/ac800965g) the formula of Naples yellow is given initially as Pb2Sb2O7 but later as Pb(SbO3)2.Pb3(Sb3O4)2. The last formula is chemical nonsense the oxidation states do not stack up, and is probably a misprint of Pb3(SbO4)2. When and if I get to the bottom of this I will correct the article.Axiosaurus (talk) 14:51, 26 January 2014 (UTC)
After 1800...[edit]
The last paragraph, starting "After 1800..." is vague and needs elaboration.
First, I think the first should read something like "After 1800, Naples Yellow fell into disuse..." The current wording, with "discontinued" makes it sound like it was a product produced by a particular company and that the company stopped producing it after 1800.
Second, it is strange to simply say that Naples Yellow fell into disuse, because the color name is still used in product lines of paint manufacturers. The text makes it sound like Naples Yellow is something of the past. Something needs to be said that clarifies, say, that it fell into disuse in the 19th century but then also to what extent it is used today.
Wiki Education assignment: A History of Color[edit]
This article was the subject of a Wiki Education Foundation-supported course assignment, between 17 January 2023 and 4 May 2023. Further details are available on the course page. Student editor(s): Papikim (article contribs).
— Assignment last updated by Landryla (talk) 15:29, 16 March 2023 (UTC)