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Lead(II) oxide, also called lead monoxide, is the inorganic compound with the molecular formula PbO. PbO occurs in two polymorphs: litharge having a tetragonal crystal structure, and massicot having an orthorhombic crystal structure. Modern applications for PbO are mostly in lead-based industrial glass and industrial ceramics, including computer components. It is an amphoteric oxide.
3D model (JSmol)
|UN number||3288 2291 3077|
CompTox Dashboard (EPA)
|Molar mass||223.20 g/mol|
|Appearance||red or yellow powder|
|Melting point||888 °C (1,630 °F; 1,161 K)|
|Boiling point||1,477 °C (2,691 °F; 1,750 K)|
|Solubility||insoluble in dilute alkalis, alcohol|
soluble in concentrated alkalis
soluble in HCl, ammonium chloride
|P4/nmm, No. 129|
|H302, H332, H351, H360Df, H362, H373, H410|
|P201, P202, P260, P261, P263, P264, P270, P271, P273, P281, P301+P312, P304+P312, P304+P340, P308+P313, P312, P314, P330, P391, P405, P501|
|NFPA 704 (fire diamond)|
|Lethal dose or concentration (LD, LC):|
LDLo (lowest published)
|1400 mg/kg (dog, oral)|
|Safety data sheet (SDS)||ICSC 0288|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N (what is YN ?)