Bleidibromid

Bezeichnung:Bleidibromid

CAS-Nr10031-22-8

Englisch Name:LEAD(II) BROMIDE

CBNumberCB1483912

SummenformelBr2Pb

Molgewicht367.01

MOL-Datei10031-22-8.mol

Synonyma

Bleidibromid

Bleidibromid physikalisch-chemischer Eigenschaften

Schmelzpunkt	371 °C(lit.)
Siedepunkt	892 °C(lit.)
Dichte	6.66 g/mL at 25 °C(lit.)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
Löslichkeit	ethanol: insoluble(lit.)
Aggregatzustand	Powder
Farbe	White to off-white
Wichte	6.66
Wasserlöslichkeit	Soluble in water at 20°C 5g/L. Insoluble in ethanol. Solubility in N,N-DMF is almost transparent.
Merck	14,5403
Solubility Product Constant (Ksp)	pKsp: 6.82
Expositionsgrenzwerte	ACGIH: TWA 0.05 mg/m3 NIOSH: IDLH 100 mg/m3; TWA 0.050 mg/m3
Stabilität	Stable.
InChIKey	ZASWJUOMEGBQCQ-UHFFFAOYSA-L
CAS Datenbank	10031-22-8(CAS DataBase Reference)
EPA chemische Informationen	Lead(II) bromide (10031-22-8)

Sicherheit

Kennzeichnung gefährlicher	T,N
R-Sätze:	61-20/22-33-50/53-62
S-Sätze:	53-45-60-61
RIDADR	UN 2291 6.1/PG 3
WGK Germany	3
TSCA	Yes
HazardClass	6.1
PackingGroup	III
HS Code	28275900

Gefahreninformationscode (GHS)

LEAD(II) BROMIDE Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R61:Kann das Kind im Mutterleib schädigen.
R20/22:Gesundheitsschädlich beim Einatmen und Verschlucken.
R33:Gefahr kumulativer Wirkungen.
R50/53:Sehr giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
R62:Kann möglicherweise die Fortpflanzungsfähigkeit beeinträchtigen.
S-Sätze Betriebsanweisung:
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S60:Dieses Produkt und sein Behälter sind als gefährlicher Abfall zu entsorgen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Chemische Eigenschaften
white, ortho-rhomb crystal(s); -80 mesh with 99.999% purity; enthalpy of vaporization 133 kJ/mol; enthalpy of fusion 16.44 kJ/mol; obtained from PbO or PbCO3 and HBr; finds use as a photopolymerization catalyst and in photoduplication processes in the 365 nm region [KIR78] [CER91] [CRC10] [MER06]
Physikalische Eigenschaften
White orthorhombic crystals; density 6.66 g/cm³; melts at 373°C; forms a horn-like mass on solidification; vaporizes at 916°C; decomposes slowly on exposure to light; sparingly soluble in cold water (4.55 g/L at 0°C and 8.44 g/L at 20°C, respectively); moderately soluble in boiling water (44.1g/L at 100°C); Ksp 6.60x10^-6 at 25°C; insoluble in alcohol; slightly soluble in ammonia; soluble in alkalies and also in sodium or potassium bromide solutions.
Verwenden
Lead(II) bromide (PbBr₂) can be used in the fabrication of nanoscale quasi-2D layered perovskites, which are potentially utilized as light-emitting materials. It can also be 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).
Verwenden
It is used in the field of antirust, pigment and photograph. The molten lead(II) bromide acts as an electrolyte. Lead(II) bromide provides a high concentration of lead(II) ions and bromide ions to carry the current during the electrolysis process. The rare-earth-doped alkali-lead bromide crystals (potassium lead bromide (or) KPB; rubidium lead bromide or RPB) emerge as promising new low-phonon-energy host materials for mid-IR applications and are useful for solid state lasers. Hybrid organic/lead halide perovskites are promising materials for solar cell fabrication.
Verwenden
Lead bromide is used for developing images in photography; as inorganic filler in fire-retardant plastics; as a photopolymerization catalyst for acrylamide monomer; and as a welding flux for welding aluminum or its alloys to other metals.
läuterung methode
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].

Bleidibromid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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