12185-09-0

Basic information

• Product Name: Phosphorus dimer
• Synonyms: Chebi:33472;Diphosphorus;Diphosphyne;p2;Phosphorus dimer;MGC71408
• CAS NO: 12185-09-0
• Molecular Formula: H₄P₂
• Molecular Weight: 61.947522
• Mol File: 12185-09-0.mol
• Article Data: 6

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: g/cm³
• Storage Temp.: -20°C
• CAS DataBase Reference: Phosphorus dimer(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphorus dimer(12185-09-0)
• EPA Substance Registry System: Phosphorus dimer(12185-09-0)

Safety Data

• Hazardous Substances Data: 12185-09-0(Hazardous Substances Data)

Usage

InChI:InChI=1/P2/c1-2

Upstream product

• 7732-18-5 water 
• 1305-99-3 calcium phosphide 
• 164596-64-9 phosphonium iodide 
• 7647-18-9 antimonypentachloride 
• 640295-22-3 fluoro(triphosphanyl)silane 
• 7783-06-4 hydrogen sulfide 
• 13517-10-7 boron triiodide 
• 19257-89-7 α-P4S3I2 
• 13765-43-0 phosphorus dihydride 
• 12185-10-3 phosphorus 
• 6303-21-5 hypophosphorous acid 
• 12185-10-3 phosphorous 
• 13598-36-2 phosphonic Acid 

Downstream Products

• 7647-01-0 hydrogenchloride 
• 13517-10-7 boron triiodide 
• 7803-51-2 phosphan 
• 13597-70-1 triphosphine 
• 12185-10-3 phosphorous 
• 16427-80-8 phosphonium 
• 7719-12-2 phosphorus trichloride 
• 86119-84-8 phosphoric acid 
• 7789-60-8 phosphorus tribromide 
• 13455-00-0 diphosphorus tetraiodide 
• 14500-79-9 phosphine-iodonium ylide 
• 15177-78-3 diiodophosphorane 

Relevant articles and documents

Practical aspects for the coupling of gas analytical methods with thermal-analysis instruments

The coupling of mass spectrometry, Fourier-transform infrared spectroscopy and gas chromatography with thermal-analysis methods is discussed from the practical point of view. The gas-flow conditions in thermobalances, the design of coupling interfaces, and the features of the gas analysers relevant to the coupling are shown. The high sensitivity of the Skimmer coupling as compared to the capillary coupling of mass spectrometers is explained by the perfect gas-flow conditions and elimination of condensation effects. Optimisation of transfer systems and gas cells contribute to a high sensitivity also for the FTIR coupling. The evaporation of zinc and phosphorus from a ZnGeP2 semiconductor is shown by the Skimmer coupling with MS and the HF evolution from a brick clay is measured by coupled FTIR.

Kinetics of the Dissociation of InP under Vacuum

Mass-spectrographic evolved-gas analysis is used to study the rate of decomposition of InP at various linear heating rates under vacuum.Because of the high sensitivity of the technique, it is possible to evaluate the Arrhenius parameters at very low values of fraction reacted (α), 0.10>/=α>/=0.0003, by using the Ozawa method of data analysis.Derived values of the activation energy and log preexponential are 70.5 kcal mol-1 and 13.85 s-1, respectively.These are consistent with the values calculated by using the Freeman and Carrol, Ozawa, and Kissinger methods in the more conventional range of 0.1A composite of all of all of the calculated values shows a nearly linear relationship between activation energy and log preexponential resulting from the mathematical ill-conditioning of the Arrhenius equation.Some extrapolations are made to low temperatures as guidelines for those interested in the thermal processing of InP.

The First Hydrides of a Phosphorus Sulfide Cage: Nuclear Magnetic Resonance Evidence for α-Tetraphosphorus Trisulfide Hydride Compounds

The hydrides α-P4S4(H)R (R = H, I, NMePh or SPh) have been prepared in solution by the reaction of α-P4S3I2 or of the corresponding α-P4S3(I)R with Sn-n-Bu3H, and identified by 31P NMR spectroscopy.The compounds were unstable and not isolated.Ab initio molecular orbital calculations of geometry have been carried out for α-P4S3H2, α-P4S3(NMe2)2 and α-P4S3H(NMe2).