Reaction products of 7-amino-4-hydroxynaphthalene-2-sulfonic acid reacted with 2-((1,3,5-triazin-2-yl)amino)ethan-1-ol, coupled with diazotised 3-amino-4-hydroxybenzenesulfonic acid, subsequently coupled with diazotised 2-amino-5-methoxybenzenesulfonic acid, chelated with copper, sodium salt

Appearance / physical state / colour

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

appearance / physical state / colour

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 2019-08-27 to 2019-10-08

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

test procedure in accordance with national standard methods

Principles of method if other than guideline:

Adspectoric and olfactoric assessment

GLP compliance:

yes

Physical state at 20°C and 1013 hPa:

solid

Key result

Form:

solid: particulate/powder

Colour:

Dark brown

Odour:

odourless

Substance type:

organic

Conclusions:

The substance is a dark brown powder.

Reference 2

Endpoint:

appearance / physical state / colour

Type of information:

other: qualitative assessment

Adequacy of study:

supporting study

Study period:

2015

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: All evaluations are based on information about specification (technical standard), experience in dealing with the substance and visual evaluation.

GLP compliance:

no

Physical state at 20°C and 1013 hPa:

solid

Key result

Form:

solid: particulate/powder

Colour:

Bluish Red

Substance type:

organic

Conclusions:

The substance is a bluish red powder at 101 325 hPa and 20 °C.

Executive summary:

All evaluations are based on information about specification (technical standard), experience in dealing with the substance and visual evaluation. The substance is a bluish red powder at 101 325 hPa and 20 °C.

Reference 3

Endpoint:

appearance / physical state / colour

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

June 16, 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: OECD Guideline 102 (Melting point / Melting Range); EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: OECD Guideline 103 (Boiling point/boiling range); EU Method A.2 (Boiling Temperature)

Deviations:

no

Principles of method if other than guideline:

The Differential Scanning Calorimetry (DSC) method was used for the evaluation of melting and boiling points of the test substance. Test was performed according to the SOP - SRT 028 protocol.

GLP compliance:

no

Physical state at 20°C and 1013 hPa:

solid

Key result

Form:

solid: particulate/powder

Colour:

red

Substance type:

organic

Conclusions:

The test substance is a red solid at 20 °C and 1013 hPa.

Executive summary:

Method

The test item was tested using the Differential Scanning Calorimetry (DSC) according to the OECD Test Guidelines 102 and 103 in order to evaluate its physical state. The test substance is a red solid at 20 °C and 1013 hPa.

Results

Between 25 - 150 °C, there is a endothermic peak associated to the release of water/ solvent, followed by a exothermic peak between 252 and 321 °C followed by the degradation of the product starting from 360 °C before melting or boiling.

Based on the available information, the substance is solid at 20 °C and 1013 hPa.

Description of key information

Dark red-brown organic powder at 101325 hPa and 20 °C.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:

solid

Form:

solid: particulate/powder

Colour:

brown

red

Colour intensity:

dark

Additional information

The substance is a dark brown or red-brown powder.