PRODUCT CODE:

141154

di-Phosphorus penta-Oxide PRS

O₅P₂

P₂O₅

M.= 141,94	CAS [1314-56-3]	EINECS 215-236-1
NC 2809 10 00

SYNONYMS: Phosphoric Acid Anhydride · Phosphorus(V) Oxide ·Diphosphorus Pentoxide ·
PHYSICAL DATA: White powder · Decomposes in water · Hygroscopic · D: 2,39 · M. P.: 569 ° C ·
APPLICATIONS: Analytical reagent: RFE · USP 26 · BP · Ph. Eur. IV · Desiccant · For the elimination of moist from organic compounds ·
Synthesis reagent: Synthesis of nitriles by primary carboxamide dehydration , examples: Chloroacetonitrile ; Org. Synth. Coll. Vol., 4 , 144 (1963) ; Fumaronitrile ; Org. Synth. Coll. Vol., 4 ,486 (1963) ; Isobutyronitrile ; Org. Synth. Coll. Vol., 3 ,493 (1955) ; 3-cyanopyridine ; Org. Synth. Coll. Vol., 4 ,706 (1963) · Conversion of 4-toluenesulphonic acid to its anhydride ; Org. Synth. Coll. Vol., 4 ,940 (1963) · Preparation of the mixed anhydride from triflic and trifluoroacetic acids ; Org. Synth., 64 , 217 (1984) · In DMF, phosphorus pentoxide converts both aliphatic and aromatic acids directly to their N,N-dimethylamides in good yiels ; Monatsh. Chem. , 99 , 1799 (1968) · In combination with dimethoxymethane is a highly convenient reagent for the protection of alcohols and use of the carcinogenic chloromethyl-methyl-ether is avoided ; Synthesis , 276 (1975) · Direct formation of thiocarboxylic esters by reaction between the carboxylic acid and the thiol ;Synthesis , 134 (1982) ·
BIBLIOGRAPHY: Merck Index 12 , 7512 13 , 7441 · Sax PHS 250 · Safety 2 , 2824 C · Kühn-Birett P 22 · Römpp 8 , 3168 · Fieser 1 , 871 7 , 291 10 , 319 15 , 267 · ACS IX , 472 X , 495 · ISO 6353/3-1987R - 74 , 44 ·

HAZARDOUS: E.C.: 015-010-00-0 · RTECS: TH 3945000 · LC₅₀ ihl rat 1217 mg/m³/1h · VLA-ED: 1 mg/m³ ·

R: 35
S: 22-26-45

TRANSPORT REGULATIONS: UN: 1807 · ADR: 8/II · IMDG: 8/II · IATA: 8/II · PAX: 815 · CAO: 817·

SPECIFICATIONS:

Assay (Acidim.)	98 %
Insoluble matter in H₂O	0,05 %
Phosphorus(III) oxide (P₂O₃)	0,05 %
Nitrogen compounds (as N)	0,01 %
Cu	0,005 %
Fe	0,005 %
Ni	0,005 %
Pb	0,005 %