Talk:Lead(II,IV) oxide

Naming

To be consistent with other compounds this should be named as per IUPAC Lead(II,IV) oxide--Axiosaurus (talk) 18:36, 4 February 2008 (UTC)[reply]

Shouldnt it be Lead(II,III) oxide, like Magnetite? I'm changing it to that, but if I'm wrong, feel free to revert it Alecjw (talk) 12:21, 6 September 2009 (UTC)[reply]

Edit: sorry, my bad - it is (II,IV). You were right. I'll change it to that. Alecjw (talk) 12:23, 6 September 2009 (UTC)[reply]

Axiosaurus, where is your citation of IUPAC naming conventions for lead tetroxide? From what I have found, IUPAC has no definitive ruling on calling it lead (II, IV) oxide or lead (II, II, IV) oxide. The latter takes into account the proper ratio of lead to oxygen atoms per formula unit. Please share your source. — Preceding unsigned comment added by 173.15.107.1 (talk) 17:14, 8 November 2012 (UTC)[reply]

Trivia

It is also the component of Sindur. --K shaurya (talk) 05:53, 27 May 2008 (UTC)[reply]

Jagged 85 Cleanup

Wikipedia_talk:Requests_for_comment/Jagged_85 Wikipedia talk:Requests for comment/Jagged 85/Cleanup help to get the whole story. But in short there are 63000 edit which might be undue promotion of Islamic and other non-European scholarship and achievements. The sentence here in question is:

It was first isolated as a pure compound by Arabic chemists and was clearly described by Muhammad ibn Zakarīya Rāzi (Rhazes) in the early 10th century.[3]

While the source only gives :

Information about derivative materials are to be found in various treatises of al-Razi, Kashuni MS and other Arabic treatises.

The following is a partial list:—

Mafatih al-‘Ulum, the
Isfidaj. Tin or Lead Oxide.
Martak or Murdasanj. Lead Oxide, PbO.
Usrunj or isrinj . Red Lead, Pb3O4.

This makes it clear to me that he was neither the first nore that it was cleaner than the lead oxide of others. --Stone (talk) 18:17, 25 October 2010 (UTC)[reply]

Feller, Robert L; Roy, Ashok (1986). Artists' pigments: a handbook of their history and characteristics. ISBN 9780894680861.Multhauf, Robert P (1967). The origins of chemistry. might have something on this topic, but I do not have access to it.--Stone (talk) 18:28, 25 October 2010 (UTC)[reply]

Pyrogenic character

GHS Pictogram flame-over-circle, EU Classification as oxidising agent, H272 (with P220)and R8 is not in common with truth. With REACH (EC 1907/2006) there is no such classification basis on last reaserches. In dossier classification is as follow: H302 Harmful if swallowed. H332 Harmful if inhaled. H351 Suspected of causing cancer H360Df May be harmful for a child in the womb. It is suspected it impairs reproduction. H373 May cause damage to internal organs H410 Very toxic for aqueous organisms, causing long-lasting effects. with P-phrases: P202 Do not use unless you have acquainted yourself with and understood all the safety measures. P263 Avoid contact during pregnancy and lactation. P273 Avoid dumping to the environment. P281 Use personal protective equipment as required. P308+P313 In case of exposure or contact: Consult a doctor. P405 Store locked. P501 Contents/container to be disposed in accordance with the local waste management regulations. To be treated as dangerous waste.

Macula Caeca (talk) 23:02, 5 November 2012 (UTC)Macula Caeca[reply]

Lead(II,IV) oxide is it really??

I eat my words- see earlier post. If Pb₃O₄ is lead(II,IV) oxide, what about Pb₂O₃ the sesquioxide, that would be lead(II,IV) oxide too and has a better claim as the proportions of lead(II) to lead(IV) is 1:1. Perhaps the name of Pb₃O₄ should be lead(II,III,III) oxide as this would be a way of distinguising them by this naming method. A safer name would be trilead tetroxide using a compositional IUPAC name. Axiosaurus (talk) 15:43, 27 January 2013 (UTC)[reply]

I need to check the structures, but my recollection is that the II-IV species is Robin-Day class I (see Mixed valence compounds#Classification). Valence-trapped. Pb₂O₃ is perhaps more ambiguous, i.e. similar coordination spheres. BTW, nice having you back in the Wikipedia business. Not many hard core inorganickers. --Smokefoot (talk) 00:56, 1 February 2013 (UTC)[reply]

In a related point I'd like to know what's going on in those unit cell images. Metal oxides are covalent but the oxygens are shown with up to 4 bonds. Project Osprey (talk) 00:06, 1 February 2013 (UTC)[reply]

Come again? A good example is ZnO, diamondoid structure with normal 4-coordinate tetrahedral oxide centers. One might expect a rock salt structure based on radius ratios but covalency dictates the 4-coordinate O centers. You can lots of such infomation from secondary sources, like texts. --(talk) 00:56, 1 February 2013 (UTC)[reply]

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"It is also used as turmeric powder adulterant"

It's poisonous so how can it be mixed into a food product? Clarification or deletion needed MimiKal797 (talk) 23:55, 6 May 2023 (UTC)[reply]