26955-63-5

Basic information

• Product Name: methyl bis(1-methylethyl) phosphate
• Synonyms: Methyl bis(1-methylethyl) phosphate; Phosphoric acid, methyl bis(1-methylethyl) ester
• CAS NO: 26955-63-5
• Molecular Formula: C₇H₁₇O₄P
• Molecular Weight: 196.1812
• Mol File: 26955-63-5.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 206.5°C at 760 mmHg
• Flash Point: 92.9°C
• Density: 1.043g/cm³
• Vapor Pressure: 0.34mmHg at 25°C
• Refractive Index: 1.409
• CAS DataBase Reference: methyl bis(1-methylethyl) phosphate(CAS DataBase Reference)
• NIST Chemistry Reference: methyl bis(1-methylethyl) phosphate(26955-63-5)
• EPA Substance Registry System: methyl bis(1-methylethyl) phosphate(26955-63-5)

Safety Data

• Hazardous Substances Data: 26955-63-5(Hazardous Substances Data)

Upstream product

• 67-56-1 methanol 
• 82220-45-9 methanesulfonic phosphoric anhydride, diisopropyl ester 
• 105900-03-6 5-Methoxy-7,7,8,8-tetramethyl-3-methylene-1,4,6,9-tetraoxa-5λ⁵-phospha-spiro[4.4]nonan-2-one 
• 67-63-0 isopropyl alcohol 
• 116-17-6 triisopropyl phosphite 

Downstream Products

• 24630-68-0 diisopropyl hydroxymethylphosphonate 
• 62285-43-2 dimethyl <diazomethyl>phosphonate 

Relevant articles and documents

Dichotomy in the reactivity of trivalent phosphorus compounds Z3P (Z = Ph, nBu, OR) observed in the photoreaction with a ruthenium complex

Solutions of tris(2,2′-bipyridyl)ruthenium(II) dichloride (Ru2+) and various types of trivalent phosphorus compounds Z3P (Z = Ph, nBu, OR; 1) in methanol have been photolyzed with visible light at 20 °C under an argon atmosphere, resulting in the oxidation of I to the corresponding pentavalent oxo compounds Z3P=O and ligand exchange of Ru2+ with 1. The former process takes place via single-electron transfer (SET) from 1 to Ru2+ in the photoexcited state, Ru2+*, which gene-rates the radical cation intermediate Z3P*+ from 1. The latter results from nucleophilic attack of 1 upon Ru2+*. The results show that 1 can act either as an electron donor or as a nucleo-phile toward Ru2+*. The rate constants for both processes are estimated. An excellent linear correlation is found between the logarithm of the SET rate and the oxidation potential for both the aromatic and aliphatic trivalent phosphorus compounds examined here; the slope of the plot is much less negative than expected on the basis of Rehm-Weller theory. Such behavior in the SET rates is interpreted by comparison with SET quenching by amines. On the other hand, a dualparameter correlation analysis shows that the ligand exchange is regulated by both steric and electronic factors in 1. WILEY-VCH Verlag GmbH, 1997.

Phosphoric and Phosphinic Sulfonic Anhydrides - Reinvestigation and Corrections. Novel Methods of Synthesis

Earlier works from this and other laboratories on phosphoric and phosphinic sulfonic anhydrides have been reinvestigated.It was found that no single reaction described in the past provides a general method for the production of mixed anhydrides RR'P(O)SO2R'' (3) in high yields of isolated products.The following three efficient synthetic procedures leading to pure anhydrides 3 are described: a) Trifluoromethanesulfonic acid promoted reaction of phosphinic acid 9 with sulfonic triazolides 10. b) Reaction of phosphinic and phosphoric imidazolides 13 with sulfonic acid 6. c) Reaction of 13 with sulfonic anhydride 15.All methods result in high yields.Some chemical properties of the anhydrides 3 are described.