tetrakis[({bis[4-(dimethylamino)phenyl] and 4-(methylamino)phenyl} or {4-(dimethylamino)phenyl and bis[4-(methylamino)phenyl]} or {tris[4-(dimethylamino)phenyl]}methylium)]C12-(branched and/or linear)-alkyl-(4-sulfonatophenoxy)benzenesulfonate and oxybis[C12-(branched and/or linear)-alkyl-benzenesulfonate].

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: The reliability is rated 2 because the study is well documented and meets generally accepted scientific principles. The results were reviewed for reliability and assessed as valid. Study not conducted under GLP conditions.

Data source

Reference

Reference Type:

other company data

Title:

Unnamed

Year:

2012

Report date:

2012

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

similar to Kofler hot bar

Deviations:

yes

Remarks:

: hot bar PROLABO, temperature is homogenous on the hot bar

Principles of method if other than guideline:

Technic similar to the Kofler Hot bar.
Apparatus PROLABO, temperature is homegenous at every point of the hot bar

GLP compliance:

no

Type of method:

other: similar to Kofler hot stage

Test material

Test material information

Constituent 1

Reference substance name:

bis(bis[4-(dimethylamino)phenyl][4-(methylamino)phenyl]methylium) bis(tris[4-(dimethylamino)phenyl]methylium) 3-(dodecan-3-yl)-4-(2-dodecyl-4-sulfonatophenoxy)benzene-1-sulfonate 3-dodecyl-4-(4-sulfonatophenoxy)benzene-1-sulfonate

EC Number:

700-759-4

Molecular formula:

not applicable

IUPAC Name:

bis(bis[4-(dimethylamino)phenyl][4-(methylamino)phenyl]methylium) bis(tris[4-(dimethylamino)phenyl]methylium) 3-(dodecan-3-yl)-4-(2-dodecyl-4-sulfonatophenoxy)benzene-1-sulfonate 3-dodecyl-4-(4-sulfonatophenoxy)benzene-1-sulfonate

Details on test material:

- Name of test material (as cited in study report): Sepisol Fast Violet 881239
- Substance type: organic salt - UVCB
- Physical state: Dark violet powder
- Analytical purity: 94.7 % w/w - 96.6 % w/w
- batch: 016569
- Stability under test conditions: stable under test conditions
- Storage condition of test material: room temperature

Results and discussion

Melting / freezing point

Atm. press.:

1 013 hPa

Decomposition:

no

Remarks on result:

other: The test item shows no melting point. No liquid phase at no point but a softening phase of from 183 up to 188 °C.

Any other information on results incl. tables

Calibration of the hot bar Prolabo: A clear and sharp dividing line is observed and a fluid phase is appearing. We observed a temperature lag between the theoretical melting and the measured one, but the order of magnitude is correct.

 

Sepisol Fast Violet 88-1239: With the increase temperature, the test item became bright and soft. At no point a liquid appeared : no melting.

 

Dowfax solution: First, the water is removed with apparition of a white and dry product, then the test item turned brown around 270°C: no melting.

Produit	T°C at which the product becomes sticky	Measured T°C of the « apparent melting »	Corrected T°C according the « standard »	Decomposition T°C
Ammonium dihydrogen phosphate Theoretical MP= 190 °C	185 °C	200 °C	Correction = -10 °C towards 200°C
Potassium thiocyanate Theoretical MP = 173 °C	172 °C	176 °C	Correction = -3°C towards 170°C
Violet 88-1239 Lot 016569	170 °C	191 °C	No melting (softening : 183 – 188 °C)	Stop at 210°C
Dowfax 2A1 Lot WL 2401	260 °C	No melting	No melting	270 °C Product turns brown

Applicant's summary and conclusion

Conclusions:

Under normal conditions of pressure, Sepisol Fast Violet 881239 has no melting point. It became bright and soft at 183-188°C with no liquid phase. The assay was stopped after reaching 210°C with the hot bar. The test material is likely to decompose before 300 °C.