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Basic lead phosphite

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Basic lead phosphite
Names
Other names basic lead phosphonite
Identifiers
CAS Number
3D model (JSmol)
PubChem CID
UN number 2989
InChI
  • InChI=1S/2HO3P.H2O.4O.6Pb/c2*1-4(2)3;;;;;;;;;;;/h2*1H;1H2;;;;;;;;;;/q2*-2;;;;;;;;;;2*+2Key: XTQIDVCLCLXOKX-UHFFFAOYSA-N
SMILES
  • O.OP().OP().O=.O=.O=.O=..
Properties
Chemical formula H3O6PPb3
Molar mass 751.6 g·mol
Appearance white solid
Hazards
GHS labelling:
Pictograms GHS02: FlammableGHS08: Health hazard
Signal word Danger
Hazard statements H228, H350, H360, H370, H372
Precautionary statements P201, P202, P210, P240, P241, P260, P264, P270, P280, P281, P307+P311, P308+P313, P314, P321, P370+P378, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Basic lead phosphite is an inorganic compound with the proposed composition Pb3O(OH)2(HPO3). The compound contains the phosphite anion, which provides the reducing properties associated with the application of this material.

It is widely used as a stabilizer for chlorine-containing polymers, especially polyvinylchloride. Other lead phosphites are known, including normal lead phosphite, PbHPO3, although the basic salt is especially effective.

References

  1. Grossman, Richard F.; Krausnick, Dale (1998). "The structure of lead stabilizers. 2: Basic salts of inorganic acids". Vinyl and Additive Technology. 4 (3): 179–181. doi:10.1002/vnl.10038. S2CID 95532627.
  2. Bettermann, Gerhard; Krause, Werner; Riess, Gerhard; Hofmann, Thomas (2000). "Phosphorus Compounds, Inorganic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_527. ISBN 978-3527306732..
  3. Song, Jun-Ling; Hu, Chun-Li; Xu, Xiang; Kong, Fang; Mao, Jiang-Gao (2015). "Synthesis, crystal structures and properties of lead phosphite compounds". Journal of Solid State Chemistry. 231: 198–203. Bibcode:2015JSSCh.231..198S. doi:10.1016/j.jssc.2015.08.031.


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