Lead Nitrate

Pb(NO₃)₂ · CAS 10099-74-8

Leaching ActivatorHS 2834.2990UN 1469

Lead Nitrate is a highly effective activator used in gold and silver cyanide leaching processes. It accelerates the dissolution of precious metals by preventing passivation of mineral surfaces, significantly improving recovery rates in both heap leaching and CIL/CIP operations. Classified as a hazardous material (UN 1469, Class 5.1 Oxidizer).

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Technical Specifications

Parameter	Specification
Lead Nitrate [Pb(NO₃)₂]	98.0% / 99.0% min
Lead (Pb) Content	62.0% min
Water Insoluble Matter	0.05% max
Free Acid (as HNO₃)	0.1% max
Iron (Fe) Content	0.005% max
Copper (Cu) Content	0.002% max
pH (5% Solution)	3.0 - 4.0
Appearance	White Crystalline Powder

Applications

Lead Nitrate is the industry-standard activator for precious metal leaching:

Activator in gold and silver cyanide leaching (CIL/CIP/heap leach)
Accelerates dissolution of free-milling and refractory gold ores
Prevents passivation of pyrite and arsenopyrite surfaces
Improves gold recovery rates by 5-15% in typical operations
Used in conjunction with cyanide for optimal leaching kinetics
Essential reagent in modern gold processing plants worldwide

Packaging & Delivery

25kg net weight per UN-approved fiber drum with PE liner
50kg UN-approved drums available
Hazardous material packaging per IMDG/IATA regulations
20MT per 20ft FCL (palletized, hazardous cargo)
MSDS and transport documentation provided with each shipment

Documentation

Certificate of Analysis (COA) per batch
Material Safety Data Sheet (MSDS)
Commercial Invoice & Packing List
Bill of Lading / Air Waybill
Certificate of Origin (if required)

Safety, Handling & Regulatory

Hazard Classification

UN Number: 1469 (Class 5.1 — Oxidizing Substance)
Harmful if swallowed, inhaled or absorbed through skin
Cumulative poison — may cause lead poisoning with prolonged exposure
Environmental hazard — toxic to aquatic life
Must be transported as hazardous cargo with proper documentation

Handling Precautions

Wear nitrile gloves, safety goggles, respirator and protective clothing
Handle in well-ventilated area — avoid dust generation
Store away from combustibles, reducing agents and strong acids
Do not eat, drink or smoke in handling areas
Wash hands thoroughly after handling
Refer to MSDS for complete safety, first aid and spill response