Diphosphoric acid, P,P,P',P'-tetrakis(phenylmethyl) ester

Appearance / physical state / colour

Administrative data

Endpoint:

appearance / physical state / colour

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental part from 2016-11-24 to 2016-12-02

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other:

Remarks:

The description of the substance comes from an experimental study report on physico-chemical properties, conducting in accordance with Good Laboratory Practices. The substance is adequately defined (with certificate of analysis). No specific test guideline is required.

Cross-reference

Cross-reference 1

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 2016-09-23 to

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

2015-07-28

Key result

Relative self-ignition temperature:

> 400 °C

Assay No. 1

Duration of the test:        796 min

Rate:                                 0.51 °C/min

Observations:

At the start of the test, the test item was a white powder.

At the end of the test, the cube was empty.

Conclusion: No self-ignition temperature of the test item was observed up to 400 °C (corrected value).

 

Assay No. 2

 

Duration of the test:        799 min

Rate:                                 0.51 °C/min

Observations:

At the start of the test, the test item was a white powder.

At the end of the test, the cube was empty.

Conclusion: No self-ignition temperature of the test item was observed up to 400 °C (corrected value).

Conclusions:

The auto-ignition temperature of tetrabenzylpyrophosphate is above 400 °C

Executive summary:

The auto-ignition of tetrabenzylpyrophosphate has been investigated according to EU. A.16 method in compliance with GLP. The test did not show any auto-ignition temperature of the test substance above 400°C.

Cross-reference 2

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 2016-09-23 to

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

2015-07-28

Key result

Test procedure:

burning rate test: preliminary screening test

Remarks on result:

substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

Preliminary test

Experimental conditions

 

Room humidity:                             About 54%

Room temperature:                      About 20 °C

Atmospheric pressure:                 97.7 kPa

Type of test item:                          Powder

Application of the flame:             Until 2 min

Test period:                                    2 min

 

Assay No. 1

The test item melted. Neither propagation nor ignition was observed.

 

Assay No. 2

The same observations as for the assay No. 1 were recorded

Main test

Taking into account the results obtained during the preliminary test, no main test was performed.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

Tetrabenzylpyrophosphate is not a flammable solid.

Executive summary:

The flammability of tetrabenzylpyrophosphate has been investigated according to UN N.1 methods in compliance with GLP. The preliminary screening test did not show any propagation of combustion of the test substance along 200 mm length of the pile within 2 minutes. Performance of the definitive burning rate test is not required.

Based on the results obtained, the test substance was not classified as a flammable solid of Division 4.1 and thus was not assigned to any packing group, under the experimental conditions used.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Qualifier:

no guideline followed

Version / remarks:

No specific test guideline is required.

Test material

Test material information

Constituent 1

Reference substance name:

dibenzyl {[bis(benzyloxy)phosphoryl]oxy}phosphonate

EC Number:

628-817-3

Cas Number:

990-91-0

Molecular formula:

C28H28O7P2

IUPAC Name:

dibenzyl {[bis(benzyloxy)phosphoryl]oxy}phosphonate

Test material form:

solid

Details on test material:

Identification TETRABENZYLPYROPHOSPHATE

Results and discussion

Physical state at 20°C and 1013 hPa:

solid

Form / colour / odour

Form:

solid: particulate/powder

Colour:

White

Applicant's summary and conclusion

Conclusions:

The tetrabenzyl pyrophosphate is a white powder