Assay Grade Litharge (PbO)

Assay grade litharge (PbO) with high purity and strict control of gold, silver and other trace impurities, designed for fire assay laboratories and specialized analytical applications.

Product Details

Assay Grade Litharge (PbO)

High-purity lead monoxide with controlled gold, silver and metallic impurities for fire assay and professional laboratory use.

Product Information

Formula	PbO	CAS No.	1317-36-8
EC No.	215-267-0	Appearance	Yellow powder

Specification

Reference standard: HG/T 3002-1983 (1997). Annual capacity: 9,000 metric tons.

Item	Specification
PbO	≥99.5%
Sieve residue	≤0.50%
Gold (Au)	≤1 ppb
Silver (Ag)	≤0.5 ppm
Free lead	≤0.10%
PbO₂	≤0.05%
Nitric acid insolubles	≤0.10%
Moisture	≤0.20%
Fe₂O₃	≤0.005%
CuO	≤0.002%

Contains lead. For trained industrial and laboratory users only. TDS, SDS and batch COA are available on request.

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Lead oxide series

Assay Grade Litharge (PbO)