10031-22-8 Usage
Uses
Used in Photography:
LEAD(II) BROMIDE is used for developing images in photography. Its ability to form a horn-like mass on solidification and its sensitivity to light make it an ideal choice for this application.
Used in Plastics Industry:
In the plastics industry, LEAD(II) BROMIDE serves as an inorganic filler in fire-retardant plastics. Its properties contribute to the enhancement of the fire-resistant characteristics of the plastic materials.
Used as a Catalyst:
LEAD(II) BROMIDE is utilized as a photopolymerization catalyst for acrylamide monomer. This application takes advantage of its reactivity and ability to initiate the polymerization process under specific conditions.
Used in Welding:
In the welding industry, LEAD(II) BROMIDE is employed as a welding flux for welding aluminum or its alloys to other metals. Its properties facilitate the welding process and improve the quality of the joint.
Used in Antirust, Pigment, and Photographic Applications:
LEAD(II) BROMIDE is used in the field of antirust, pigment, and photography. The molten lead(II) bromide acts as an electrolyte, providing a high concentration of lead(II) ions and bromide ions to carry the current during the electrolysis process.
Used in Solid State Lasers:
Rare-earth-doped alkali-lead bromide crystals, such as potassium lead bromide (KPB) or rubidium lead bromide (RPB), are emerging as promising new low-phonon-energy host materials for mid-IR applications and are useful for solid-state lasers.
Used in Solar Cell Fabrication:
Hybrid organic/lead halide perovskites, which incorporate LEAD(II) BROMIDE, are promising materials for solar cell fabrication due to their unique properties and potential for high efficiency.
Used in Light-Emitting Materials:
LEAD(II) BROMIDE can be used in the fabrication of nanoscale quasi-2D layered perovskites, which are potentially utilized as light-emitting materials.
Used in Light-Emitting Diodes (LEDs):
LEAD(II) BROMIDE is also used for the synthesis of deep blue fluorescent lead bromide perovskite microdisks. These microdisks can be used as direct bandgap semiconductors for light-emitting diodes (LEDs), contributing to the development of energy-efficient lighting solutions.
Preparation
Lead bromide is prepared by treating an aqueous solution of lead nitrate with hydrobromic acid or with sodium or potassium bromide:
Pb2+ + 2Brˉ → PbBr2
The solution is allowed to stand to let the precipitate settle.
The compound also may be obtained by adding lead carbonate or lead monoxide to hydrobromic acid.
Toxicity
Moderately toxic by ingestion. The toxic effects are those of lead.
Purification Methods
Crystallise it from water containing a few drops of HBr (25mL of water per gram PbBr2) between 100o and 0o. A neutral solution is evaporated at 110o, and the crystals that separate are collected by rapid filtration at 70o and dried at 105o (to give the monohydrate). Its solubility in H2O is 0.5% (at ~10o) and 5% (at ~ 100o). To prepare the anhydrous bromide, the hydrate is heated for several hours at 170o and then in a Pt boat at 200o in a stream of HBr and H2. Finally it is fused [Clayton et al. J Chem Soc, Faraday Trans 1 76 2362 1980].
Check Digit Verification of cas no
The CAS Registry Mumber 10031-22-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,0,3 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 10031-22:
(7*1)+(6*0)+(5*0)+(4*3)+(3*1)+(2*2)+(1*2)=28
28 % 10 = 8
So 10031-22-8 is a valid CAS Registry Number.
InChI:InChI=1/2BrH.Pb.4H/h2*1H;;;;;/q;;+2;;;;/p-2/r2BrH.H4Pb/h2*1H;1H4/q;;+2/p-2
