4579-03-7

Basic information

• Product Name: 2,6,7-trioxa-1,4-diphosphabicyclo[2.2.2]octane
• Synonyms: 2,6,7-Trioxa-1,4-diphosphabicyclo(2.2.2)octane; 2,6,7-Trioxa-1,4-diphosphabicyclo[2.2.2]octane
• CAS NO: 4579-03-7
• Molecular Formula: C₃H₆O₃P₂
• Molecular Weight: 152.0255
• Mol File: 4579-03-7.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 156.9°C at 760 mmHg
• Flash Point: 51.9°C
• Vapor Pressure: 3.65mmHg at 25°C
• CAS DataBase Reference: 2,6,7-trioxa-1,4-diphosphabicyclo[2.2.2]octane(CAS DataBase Reference)
• NIST Chemistry Reference: 2,6,7-trioxa-1,4-diphosphabicyclo[2.2.2]octane(4579-03-7)
• EPA Substance Registry System: 2,6,7-trioxa-1,4-diphosphabicyclo[2.2.2]octane(4579-03-7)

Safety Data

• Hazardous Substances Data: 4579-03-7(Hazardous Substances Data)

Upstream product

• 2767-80-8 tris(hydroxymethyl)phosphine 
• 63245-87-4 tris<(trimethylsiloxy)methyl>phosphine 
• 2428-06-0 2-chloro-5,5-dimethyl-[1,3,2]dioxaphosphinane 
• 121-45-9 phosphorous acid trimethyl ester 

Downstream Products

• 1449-91-8 4-methyl-2,6,7-trioxa-1-phosphabicyclo-[2,2,2]-octane 

Relevant articles and documents

Flame retardant with the cage double-phosphorus phosphite compound of preparation method

The invention relates to a method for preparing a fire retardant same-cage diphosphine phosphite ester compound. Please refer to the specification for the structural formula of the compound. According to the preparing method, tris (hydroxymethyl) phosphine and triphenyl phosphite which are equimolar react for 5-10 h at a temperature between 100 DEG C and 150 DEG C under the protection of nitrogen and the action of a catalyst, and same-cage diphosphine phosphite ester is obtained through purification. The compound is a fire retardant high in phosphorus content, excellent in fire retardance, and suitable for serving as the fire retardant of materials including polyester, polyurethane, epoxy resin, unsaturated polyester resin and polyolefin. Furthermore, manufacturing technique is simple, equipment investment is low, and industrial production is facilitated.

NOVEL HIGH-YIELD TRANSESTERIFICATION AND TRANSAMINATION ROUTES TO P(OCH2)3CCH3 AND P3CCH3, RESPECTIVELY

High yields (93-96percent) in a one-step syntheses of CH3C(CH2OP(o-O2C6H4))3 (3), (4) and (5) are reported.Compounds 4 and 5 at 100-110o give P(OCH2)3CCH3 (2) and P(N(CH3)CH2)3CCH3 (7) in 97 and 96percent yield, respectively, plus the diphosphite (CH3)2C(CH2O)2POCH2C(CH3)2CH2OP(OCH2)2C(CH3)2 (8).Compound 8 was also characterized as its dithiophosphate derivative.Experiments designed to synthesize the adamantane-like P(OCH)3(CH2)3 (9) and P(CH2O)3P (10) in an analogous manner met with only partial success.The tris-phosphate analogue of 4 was also synthesized but it did not thermolyze to OP(OCH2)3CCH3 under the conditions used for 4 and 5 even after prolonged heating.