Detail of "2751-90-8"

CAS Number:
2751-90-8
Name:
Phosphonium,tetraphenyl-, bromide (1:1)
Superlist Name:
Tetraphenylphosphonium bromide
Molecular Structure:
Formula:
C₂₄H₂₀BrP
Molecular Weight:
419.29
Deleted CAS:
24038-30-0|15376-06-4
Synonyms:
Phosphonium,tetraphenyl-, bromide (8CI,9CI);Tetraphenylphosphonium bromide (6CI,7CI);Bromotetraphenylphosphorane;TPP-PB;TTP-PB;Tetraphenylphosphorus bromide;phosphonium, tetraphenyl-, bromide (1:1);Tetraphenylphosphonium bromide;Tetraphenylphosphoniumbromid;
EINECS:
220-393-4
Melting Point:
295-300 °C(lit.)
Flash Point:
260 °C
Appearance:
white to off-white crystalline powder
Hazard Symbols:
Xi
Risk Codes:
36/37/38
Safety:
26-36 Details
particular:
particular

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Reference

Thermal stabilization of acrylic fibers and films: Thermal stabilization of acrylic fibers and films. Collins, George L.; Thomas, Norman W. (Celanese Corp. , USA). U.S. US 4452601 A 5 Jun 1984, 6 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C01B031-07. NCL: 008115500. APPLICATION: US 82-360012 19 Mar 1982. DOCUMENT TYPE: Patent CA Section: 40 (Textiles) Thermally stable acrylic fibers and films, which are capable of undergoing carbonization, are manufd. by extruding a soln. contg. acrylonitrile polymer and a substituted phosphonium salt (0.5-10% wt. acrylonitrile polymer) and heating in O-contg. atm. at 200-350° until a thermally stabilized fibrous material formed which was black in appearance. Thus, a soln. contg. 22% acrylonitrile-Me acrylate copolymer [24968-79-4] () and 5% tetraphenylphosphonium bromide [2751-90-8] in AcNMe2 was dry spun to give a fiber with denier 0.9 and tenacity 33 g/denier. The fiber was stabilized on a continuous basis by heating while continuously passing for 30 min in the direction of its length through a circulating air atm. at 265°. The resulting stabilized fiber was black in appearance, flexible, had a textilelike hand, retained it original fibrous configuration essentially intact, was nonburning when subjected to an ordinary burning match flame, retained strength after glowing in a match flame, and had an O content >10%. The stabilized acrylic fibers were capable of undergoing carbonization by passage for 2 min through a resistance heated furnace provided with a circulating N atm. at 1350°.

Enthalpies of solution of tetraalkylammonium salts in hexamethylphosphotriamide at 298: Enthalpies of solution of tetraalkylammonium salts in hexamethylphosphotriamide at 298.15 K. Castagnolo, Maurizio; Sacco, Antonio; De Giglio, Angelo (Dep. Chem., Univ. Bari, Bari 70126, Italy). J. Chem. Soc., Faraday Trans. 1, 80(10), 2669-75 (English) 1984. CODEN: JCFTAR. ISSN: 0300-9599.Several substances like 2751-90-8 may be metioned in this study. DOCUMENT TYPE: Journal CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) The heats of soln. of some tetraalkylammonium salts and of Ph4PBr [2751-90-8] in HMPT [680-31-9] at 298.15 K were detd. Ionic heats of transfer from water to HMPT and from HMPT to propylene carbonate (I) [108-32-7] were calcd. on the basis of the extrathermodn. assumption, DH0tr(Ph4As+) = DH0tr(BPh4-). This assumption is valid for the heats of transfer from HMPT to I, but not for transfer from water to HMPT. The heats of transfer of tetraalkylammonium ions from HMPT to I are discussed in terms of the ability of HMPT to solvate alkyl chains. .

Detail of "2751-90-8"

Phosphonium,tetraphenyl-, bromide (1:1)

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CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

CAS No.2751-90-8 Tetraphenylphosphonium bromide

Reference