lead(ii) tungstate

Description

lead(ii) tungstate · CAS 7759-01-5 · PbWO4. UNII NS00075409. Melting Point: 2053.4 °F (USCG, 1999); Melting Point: 1130 °C (stolzite); Solubility: 0.03 g/100 g water at 20 °C.

Identification

CAS Registry Number	7759-01-5
PubChem CID	24464
Molecular formula	PbWO4
IUPAC name	dioxido(dioxo)tungsten;lead(2+)
UNII (FDA)	NS00075409

Computed Descriptors

Molecular Weight	455
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	0
Exact Mass	455.90724
Monoisotopic Mass	455.90724
Topological Polar Surface Area	80.3
Heavy Atom Count	6
Formal Charge	0
Complexity	62.2

Physical & Chemical Properties

Melting Point	2053.4 °F (USCG, 1999)
Melting Point	1130 °C (stolzite)
Solubility	0.03 g/100 g water at 20 °C

Physical description & handling notes

• Lead tungstate is a white to pale yellow powdery solid. Sinks in water. (USCG, 1999)
• White powder; Insoluble in water; [HSDB]
• White powder
• Yellow tetragonal crystals (stolzite); monoclinic crystals (raspite)
• Insoluble in water
• Soluble in alkaline

GHS Hazard Classification

Reported hazard statements	H302 (100%), H332 (100%), H360 (100%), H373 (100%), H400 (100%), H410 (100%)

Documented Uses

• Used in Raman lasers; [ChemIDplus] Pigment; [HSDB]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• By mixing solutions of lead nitrate and sodium tungstate, concentrating, and crystallizing.
• Lead tungsten oxide (PbWO4): ACTIVE
• 10 to 30 grams for and adult human (lead salts). (T17)
• Lead is absorbed following inhalation, oral, and dermal exposure. It is then distributed mainly to the bones and red blood cells. In the blood lead may be found bound to serum albumin or the metal-binding protein metallothionein. Organic lead is metabolized by cytochrome P-450 enzymes, whereas inorganic lead forms complexes with delta-aminolevulinic acid dehydratase. Lead is excreted mainly in the urine and faeces. (L136)

Synonyms

Lead tungstate; Lead wolframate; Natural raspite; Natural stolzite; Lead tungsten oxide (PbWO4); Lead Tungstate(IV); DTXSID20896962; Tungstic acid, lead(2+) salt (1:1); RefChem:152664; DTXCID401326394; lambda2-lead(2+) ion dioxotungstenbis(olate); 231-849-7; 7759-01-5; Lead tungsten tetraoxide; PbWO4; LEAD TUNGSTATE(VI)

Frequently Asked Questions

What are the CAS number and molecular formula of lead(ii) tungstate?

CAS 7759-01-5; molecular formula PbWO4; molecular weight — g/mol.

What other names is lead(ii) tungstate known by?

Lead tungstate, Lead wolframate, Natural raspite, Natural stolzite, Lead tungsten oxide (PbWO4), Lead Tungstate(IV).

Is lead(ii) tungstate classified as hazardous?

Hazard statements reported: H302, H332, H360, H373, H400.

What are the key physical properties of lead(ii) tungstate?

Melting Point: 2053.4 °F (USCG, 1999); Melting Point: 1130 °C (stolzite); Solubility: 0.03 g/100 g water at 20 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.