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Lead monoxide

CAS Number
1317-36-8
EC Number
215-267-0
Chemical Formula
OPb
Molecular Weight
223 g/mol

Description

Lead monoxide (CAS 1317-36-8 ), commonly known as litharge or massicot depending on its crystalline form, is an inorganic lead compound used as a reactive oxide in industrial processing. It functions primarily as a catalyst, curing agent, and flux across rubber manufacturing and metallurgical applications. In rubber and tire production, lead monoxide acts as a vulcanization activator and accelerator co-agent, improving cross-link density and heat resistance in specialty compounds. Metallurgical processors use it as a flux in lead refining and smelting operations. In these smelting operations, it facilitates the separation of impurities from base metal melts. It also serves as a precursor in the production of lead-based glass formulations, contributing to refractive index and density in optical and crystal glass manufacturing. In mining and metals processing, it functions as an intermediate in the recovery and refining of lead from ore concentrates. Lead monoxide is supplied as a fine powder or dense granules, with particle size and purity specifications varying by end-use requirement. Standard commercial grades include technical and industrial purity levels, typically at 99% minimum lead oxide content. Both litharge (alpha-PbO) and massicot (beta-PbO) polymorphic forms are available, with litharge being the predominant commercial form. Contact us for supply of Lead monoxide Request Quote

Other Names (Synonyms)

Lead(ii) oxide | Lead oxide (pbo) | Oxolead | Lead oxide

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point888 °C
Boiling Point1470 °C
Density9.53 g/cm³
Appearancelight yellow-orange powder
Coloryellow
Formpowder
Water SolubilitySoluble in concentrated alkali, hydrochloric acid, and ammonium chloride. Insoluble in water, dilute alkali and alcohol.
Vapor Pressure10 mm Hg ( 0 °C)
Refractive Index2.67
pH8-9 (100g/l, H2O, 20℃)(slurry)

Safety & Handling

Danger
GHS07· IrritantGHS08· Health HazardGHS09· Environment

Hazard Statements

H302Harmful if swallowed
H316Causes mild skin irritation
H332Harmful if inhaled
H341Suspected of causing genetic defects
H351Suspected of causing cancer
H360May damage fertility or the unborn child
H362May cause harm to breast-fed children
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects H302+
H332Harmful if swallowed or if inhaled

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P263Avoid contact during pregnancy and while nursing.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P317Get emergency medical help.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316Get emergency medical help immediately.
P317Get emergency medical help.

Trade & Regulatory

HS Code28241000
UN Number2291
ADR Class6.1
Packing GroupIII
Storage Class6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects
WGK (Germany)3