disodium 4,4'-bis[(prop-2-enoyl)amino][1,1'-biphenyl]-2,2'-disulfonate

Stability: thermal, sunlight, metals

Administrative data

Endpoint:

stability: thermal, sunlight, metals, other

Remarks:

thermal stability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

14 Mar - 20 Mar 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 113 (Screening Test for Thermal Stability and Stability in Air)

GLP compliance:

yes (incl. QA statement)

Remarks:

Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht, Mainz, Germany

Test material

Test material information

Constituent 1

Reference substance name:

disodium 4-[(1-hydroxyprop-2-en-1-yl)amino]-4'-(prop-2-enamido)-[1,1'-biphenyl]-2,2'-disulfonate

EC Number:

812-549-0

Cas Number:

881539-89-5

Molecular formula:

C18H14N2Na2O8S2

IUPAC Name:

disodium 4-[(1-hydroxyprop-2-en-1-yl)amino]-4'-(prop-2-enamido)-[1,1'-biphenyl]-2,2'-disulfonate

Results and discussion

For thermal stability study

Test substance thermally stable:

yes

Any other information on results incl. tables

Results

Safety pre-test 1

Heated on a magnesia groove over a Bunsen burner the test item carbonised immediately and expanded in the heat.

Beaten with a hammer on the anvil no reaction could be observed.

 

Safety pre-test 2

No deformation of the crucible was observed. The mass of the crucible was recorded with 624.98 mg after cooling down. A black residue was left in the crucible.The sealing was black coloured.

 

Calibration

After calibration with indium and zinc the measurement of indium yielded the following values:

Expected melting point	Measured melting point	Expected heat flow	Measured heat flow	Assessment
156.6±1.0 °C	156.28 °C	28.45±1.0 J/g	28.61 J/g	ok

 

The measurement of indium after calibration met the validity criteria.

 

DSC Screening of the Test Item

An endothermic event was observed which can be stated as a solid to solid transition of the test item at 89.91 °C.

No further events were detected.

After the measurement the crucible was unchanged. The mass of the crucible was recorded with 623.74 mg. A black residue was left in the crucible and the sealing was black discoloured (sign of decomposition).

 

EVALUATION AND DISCUSSION

During the DSC run only an endothermic event was observed.

In accordance to the determination of the melting and boiling point study, no melting was observed till 400 °C. Therefore the first event can be stated as solid to solid transition.

No exothermic events occurred therefore the test item is no subject to the classification procedures for self-reactive substances and the acceptance procedures for Class 1 explosives need not to be applied.

The measurement of indium after calibration met the validity criteria.Therefore, the resultof the study is considered valid.