What is Lead(II) Bromide CAS 10031-22-8?

Lead(II) Bromide CAS 10031-22-8 is an inorganic lead halide with molecular formula PbBr2, molecular weight 367.01, and EINECS 233-084-4. It is also known as lead dibromide or plumbous bromide and is commonly supplied as a white to off-white crystalline powder.

Why is Lead(II) Bromide used as a perovskite solar cell precursor?

PbBr2 provides lead and bromide ions for organic-inorganic hybrid perovskite layers and wide-bandgap bromide perovskites. Its purity can affect film quality, carrier lifetime, defect density, and final power conversion efficiency.

How is Lead(II) Bromide used in X-ray and gamma-ray detection?

Lead and bromine have relatively high atomic numbers, giving the material useful stopping power for high-energy photons. High-purity PbBr2 and lead-bromide perovskite crystals convert X-ray or gamma-ray signals into electrical responses for radiation detection and imaging.

Why are DMSO and DMF solubility important for Lead(II) Bromide?

PbBr2 has low cold-water solubility but dissolves in polar aprotic solvents such as DMSO and DMF. These solutions are used in spin-coating and other thin-film deposition routes to prepare uniform perovskite or photonic layers.

Why should Lead(II) Bromide be stored away from light and moisture?

Lead(II) Bromide is light-sensitive and can gradually darken or turn slightly yellow or grey when exposed. Keeping the container closed, dry, and away from direct light helps preserve its crystalline appearance and suitability for optoelectronic precursor use.

Lead(II) Bromide CAS 10031-22-8

Lead(II) Bromide CAS 10031-22-8 is an inorganic halide salt chemically defined as lead dibromide , functioning primarily as a solid-state electrolyte in specialized galvanic cells and a precursor in the synthesis of photosensitive semiconductor materials. Also known as Plumbous bromide, this high-density crystalline powder is utilized to fabricate acousto-optic components and serves as a catalyst additive in specific industrial polymerization reactions. We provide professional access to this material with competitive factory pricing and the ability to meet customized specifications for various manufacturing requirements. Our commitment to technical transparency ensures that every shipment is accompanied by comprehensive MSDS, TDS, COA documentation to support your quality assurance protocols, and we maintain capacity for consistent bulk supply to facilitate large-scale industrial operations.

CAS: 10031-22-8
Synonyms: Lead dibromide, Plumbous bromide, Lead(2+) bromide, Dibromolead, PbBr2
Einecs: 233-084-4
Molecular Formula: PbBr2
Grade: Optoelectronic / Perovskite Precursor Grade
Package: 25kg/bag (Plastic woven bag with PE liner) or 500kg/1000kg Jumbo Bag.

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Product Description

1 1. Physical and Chemical Properties

2 2. Primary Application Fields: The “Perovskite” Revolution

3 3. Safety Precautions: A Strict Protocol

4 4. Storage and Stability

1. Physical and Chemical Properties

Lead(II) Bromide is a dense, white crystalline powder that exhibits unique behavior under varying conditions.

Property	Value / Specification
CAS Number	10031-22-8
Molecular Formula	$P b B r_{2}$
Molecular Weight	367.01 g/mol
Appearance	White to off-white crystalline powder
Density	6.66 g/cm³
Melting Point	373 °C (673 K)
Boiling Point	916 °C (1,189 K)
Solubility (Water)	Low in cold water; increases significantly in hot water
Solubility (Organic)	Soluble in DMSO, DMF (essential for thin-film coating)
Sensitivity	Light-sensitive (turns slightly yellow/grey over time)

2. Primary Application Fields: The “Perovskite” Revolution

The modern demand for Lead(II) Bromide is driven by three high-tech sectors:

Perovskite Solar Cells (PSCs): This is the most critical application. $P b B r_{2}$ is used as a primary precursor in the synthesis of organic-inorganic hybrid perovskites . Its purity directly influences the carrier lifetime and the power conversion efficiency (PCE) of the solar cell.
Radiation Detection: High-purity Lead(II) Bromide crystals are used in the fabrication of X-ray and Gamma-ray detectors. Its high atomic number ( $Z$ ) makes it an excellent material for absorbing high-energy radiation.
Specialized Optics: It is used in the production of infrared-transmitting glasses and as an additive in certain types of optical fibers and laser materials.
Organic Synthesis: In laboratory settings, it acts as a mild catalyst or reagent in various bromination reactions.

3. Safety Precautions: A Strict Protocol

As with all lead-based compounds, Lead(II) Bromide must be handled with the utmost professional care. It is classified as toxic and an environmental hazard.

Respiratory Protection: Fine powder can easily become airborne. Use a high-efficiency particulate air (HEPA) filtered respirator (N100 or P100) when handling the material outside of a closed system.
Skin and Eye Contact: Use chemical-resistant nitrile gloves (double-gloving is recommended for high-purity handling) and full safety goggles.
Ingestion: Lead is a cumulative toxin. Do not eat, drink, or smoke in areas where $P b B r_{2}$ is handled.
Environmental Impact: It is highly toxic to aquatic life. Ensure all waste is disposed of through a certified hazardous waste contractor and never allow it to enter the drainage system.

4. Storage and Stability

To protect your investment and maintain the chemical’s purity, storage conditions are non-negotiable:

Light Control: Lead(II) Bromide is photo-sensitive. Prolonged exposure to light will cause it to decompose slightly, often indicated by a grey or yellowish tint. It must be stored in amber glass bottles or opaque HDPE containers.
Moisture Control: The material is slightly hygroscopic. Store it in a cool, dry place, preferably under an inert atmosphere (Dry Nitrogen or Argon) if you are using it for electronic applications.
Temperature: Maintain storage at room temperature (15-25°C). Keep away from strong acids and oxidizing agents.

FAQ - Technical & Supply Chain

Q:
What is Lead(II) Bromide CAS 10031-22-8?

A: Lead(II) Bromide CAS 10031-22-8 is an inorganic lead halide with molecular formula PbBr2, molecular weight 367.01, and EINECS 233-084-4. It is also known as lead dibromide or plumbous bromide and is commonly supplied as a white to off-white crystalline powder.
Q:
Why is Lead(II) Bromide used as a perovskite solar cell precursor?

A: PbBr2 provides lead and bromide ions for organic-inorganic hybrid perovskite layers and wide-bandgap bromide perovskites. Its purity can affect film quality, carrier lifetime, defect density, and final power conversion efficiency.
Q:
How is Lead(II) Bromide used in X-ray and gamma-ray detection?

A: Lead and bromine have relatively high atomic numbers, giving the material useful stopping power for high-energy photons. High-purity PbBr2 and lead-bromide perovskite crystals convert X-ray or gamma-ray signals into electrical responses for radiation detection and imaging.
Q:
Why are DMSO and DMF solubility important for Lead(II) Bromide?

A: PbBr2 has low cold-water solubility but dissolves in polar aprotic solvents such as DMSO and DMF. These solutions are used in spin-coating and other thin-film deposition routes to prepare uniform perovskite or photonic layers.
Q:
Why should Lead(II) Bromide be stored away from light and moisture?

A: Lead(II) Bromide is light-sensitive and can gradually darken or turn slightly yellow or grey when exposed. Keeping the container closed, dry, and away from direct light helps preserve its crystalline appearance and suitability for optoelectronic precursor use.

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