Reaction products of triphenyl phosphite and isodecanol (1:1)

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2011

Reliability:

2 (reliable with restrictions)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

Report date:

2011

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Principles of method if other than guideline:

Approximately 100g of sample was placed in an open beaker, and heated on a hotplate. The temperature was monitored using a thermometer

GLP compliance:

not specified

Type of method:

distillation method

Test material

Test material information

Constituent 1

Reference substance name:

Phosphorous acid, diphenyl isodecyl ester

Molecular formula:

C22H31O3P

IUPAC Name:

Phosphorous acid, diphenyl isodecyl ester

Constituent 2

Reference substance name:

Triphenyl phosphite

EC Number:

202-908-4

EC Name:

Triphenyl phosphite

Cas Number:

101-02-0

Molecular formula:

C18H15O3P

IUPAC Name:

triphenyl phosphite

Constituent 3

Reference substance name:

Diisodecyl phenyl phosphite

EC Number:

247-098-3

EC Name:

Diisodecyl phenyl phosphite

Cas Number:

25550-98-5

Molecular formula:

C26H47O3P

IUPAC Name:

Reaction products of triphenyl phosphite and isodecanol (1:2)

Constituent 4

Reference substance name:

Grouped, low level constituents (1) - see description

Molecular formula:

C21H29O3P and C23H33O3P

IUPAC Name:

Grouped, low level constituents (1) - see description

Constituent 5

Reference substance name:

Grouped, low level constituents (2) - see description

Molecular formula:

N/A

IUPAC Name:

Grouped, low level constituents (2) - see description

Constituent 6

Reference substance name:

Triisodecyl phosphite

EC Number:

246-998-3

EC Name:

Triisodecyl phosphite

Cas Number:

25448-25-3

Molecular formula:

C30H63O3P

IUPAC Name:

Phosphorus acid, triisodecyl ester

Constituent 7

Reference substance name:

Grouped, low level constituents (3) - see description

Molecular formula:

N/A

IUPAC Name:

Grouped, low level constituents (3) - see description

Test material form:

liquid

Results and discussion

Boiling point

Boiling pt.:

> 220 °C

Decomposition:

yes

Decomp. temp.:

215 - 220 °C

Remarks on result:

other: Volatilization of hydrolysis products were visible in the system and some initial signs of decomposition were also present. 220 deg C was the limitation of the test apparatus.

Any other information on results incl. tables

On heating the sample in an open beaker, a small amount of condensation was seen above the sample at 145ºC, and vapours were visible at 170ºC, although the sample did not show any signs of boiling. At 215ºC the sample was noted to be darker in colour, with some visible white solid. The test was terminated at 215ºC. On repeating the test in a closed apparatus, minimal signs of condensation were visible above 190ºC, there were no signs of reflux and no temperature rise was seen at the condenser. The test was terminated at 220ºC due to the limitations of the equipment used. No signs of boiling were noted.

Applicant's summary and conclusion

Conclusions:

Isodecyl diphenyl phosphite is known to hydrolyse readily on contact with moisture. The signs of boiling seen in the open beaker apparatus can therefore be attributed to isodecanol which is liberated by the hydrolysis of the phosphite. It can therefore be concluded that isodecyl diphenyl phosphite decomposes or hydrolyses before the boiling point is reached. The sample was not observed to ignite during the test, therefore it can be concluded that