902160

Phosphorus pentoxide

anhydrous, free-flowing, Redi-Dri^™, ReagentPlus^®, 99%

• Szinonimák: Phosphoric anhydride, Phosphorus(V) oxide
• Lineáris képlet: P₂O₅
• CAS-szám: 1314-56-3
• Molekulatömeg: 141.94
• UNSPSC kód: 12352303
• PubChem Substance ID: 24852847
• NACRES: NA.21

Tulajdonságok

• grade: anhydrous
• gőzsűrűség: 4.9 (vs air)
• gőznyomás: 1 mmHg ( 384 °C); 10 mmHg ( 238 °C)
• termékcsalád: ReagentPlus^®; Redi-Dri^™
• Teszt: 99%
• form: powder
• minőség: free-flowing
• pH: 1.5 (20 °C, 10 g/L)
• mp: 340 °C (lit.)
• sűrűség: 2.3 g/mL at 25 °C (lit.)
• kation nyomok: As: ≤100 mg/kg; Fe: ≤100 mg/kg; heavy metals (as Pb): ≤0.02%
• SMILES string: O=P12OP3(=O)OP(=O)(O1)OP(=O)(O2)O3
• InChI: 1S/O10P4/c1-11-5-12(2)8-13(3,6-11)10-14(4,7-11)9-12
• Nemzetközi kémiai azonosító kulcs: YWEUIGNSBFLMFL-UHFFFAOYSA-N

Leírás

Általános leírás

Phosphorus pentoxide is a deliquescent compound prepared by reacting phosphorus with air. It is a commonly used as dehydrating and condensing agent in organic synthesis.

Alkalmazás

Dehydrating agent used for halogenation with tetrabutylammonium halides.

Process for Producing Halogenated Heteroaryl Compounds

Phosphorus pentachloride has been used for the vaccum distillation of 1-methyl-2-pyrrolidinone (NMP), which was employed as mobile phase in a chromatographic analysis.

It may be used as one of the reaction components in the synthesis of dichlorine heptoxide (Cl₂O₇) and transition-metal phosphides (Ni₂P, Co₂P and MoP). P₂O₅ supported on alumina can be used for the solvent-free and microwave-assisted preparation of 1, 5-benzodiazepine analogs. P₂O₅/KX (X = Br, I) reagent system may be used for the transformation of alcohols into the corresponding alkyl iodides and bromides.

Phosphorus pentoxide/methanesulfonic acid (PPMA) may be used as a condensing agent and solvent for the synthesis of:

• High molecular weight poly(benzoxazole)s via direct polycondensation of aromatic dicarboxylic acids containing phenyl ether structure with 3,3′-dihydroxybenzidine dihydrochloride.
• Aromatic poly(phenylene ether ether ketone)s via direct self-polycondensation of 4-(4′-phenoxyphenoxy)benzoic acids.
• 1,3-1H-dibenzimidazole-benzene by the reaction of isophthalic acid with 1,2-diaminobenzene.

Jogi információk

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Biztonsági adatok

• Piktogramok: GHS05
• Figyelmeztetés: Danger
• Figyelmeztető mondatok: H314
• Óvintézkedésre vonatkozó mondatok: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Veszélyességi osztályok: Eye Dam. 1 - Skin Corr. 1A
• Egyéb veszélyek: EUH014
• Tárolási osztály kódja: 8B - Non-combustible corrosive hazardous materials
• WGK: WGK 1
• Lobbanási pont (F): Not applicable
• Lobbanási pont (C): Not applicable