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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

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Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15-05-1998 to 15-06-1998
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Visual observation of physical state and appearance by the testing laboratory
Reason / purpose for cross-reference:
reference to same study
Principles of method if other than guideline:
Visual observation and experience on use and handling.
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected: January 1996; signature: February 1996
Physical state at 20°C and 1013 hPa:
solid
Key result
Form:
solid
Remarks:
crystalline solid
Colour:
white to off white
Substance type:
organic
Conclusions:
The physical state and appearance of the test material were evaluated by visual observation. The test item was determined to be a white to off white crystalline solid.
Executive summary:

The appearance of the test substance has been determined as:


Form: solid, crystalline


Colour: white to off white

Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15-03-2022 to 15-04-2022
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Visual observation of physical state and appearance by the testing laboratory
Reason / purpose for cross-reference:
reference to same study
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected: February 2022 ; signed: April 2022
Specific details on test material used for the study:
The physical state and appearance of the test material were evaluated by visual observation.
Physical state at 20°C and 1013 hPa:
solid
Key result
Form:
solid
Colour:
white to pale yellow
Substance type:
organic
Conclusions:
The physical state and appearance of the test material were evaluated by visual observation. The test item was determined to be a white to pale yellow solid.
Executive summary:

The appearance of the test substance has been determined as:


Form: solid


Colour: white to pale yellow

Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18-03-1998 to 08-04-1998
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Visual observation of physical state and appearance by the testing laboratory
Reason / purpose for cross-reference:
reference to same study
Principles of method if other than guideline:
Visual observation of physical state and appearance by the testing laboratory
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected: January 1996; signature: February 1996
Physical state at 20°C and 1013 hPa:
solid
Key result
Form:
crystalline
Colour:
White
Substance type:
organic
Conclusions:
The physical state and appearance of the test material were evaluated by visual observation. The test item was determined to be a white crystalline solid.
Executive summary:

The appearance of the test substance has been determined as:

Form: solid, crystalline

Colour: white

Description of key information

Weight of evidence: State of the substance at 20 °C and 101.3 kPa: white to off-white or (pale) yellow crystalline solid, visual observation

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid
Form:
solid: crystalline

Additional information

The weight of evidence is that the substance is a white to off white or pale yellow or yellow crystalline solid, and that the substance may be also occasionally demonstrated as a 'white to pale yellow liquid' which may later re-crystallize, when having been previously melted (placed at temperatures above the melting point, ca. 35.3°C).


The substance has been described the test sponsor and/or the test facility within available studies as : (1) white crystalline solid ; (2) white to off white crystalline solid ; (3) yellow solid and (4) white to pale yellow solid under standard conditions of temperature and pressure. The colour of the substance may vary in available sources. No significant odour has been reported in available sources. The test item has a measured melting point of 35.3°C at 100.48 kPa within available studies.


The substance under the CLP Regulation (EC) 1272/2008: Annex 1, section 1 concerning the definition of gases, liquids and solids, does not meet the criteria as a gas or liquid. Physical state is determined at 20°C and 'ambient pressure'. The test item should be considered as a 'white to off white or pale yellow crystalline solid' as was determined at approximately 20°C and atmospheric pressure within separate studies.


References:
1. UN Transport of Dangerous Goods Manual of Tests and Criteria, Seventh Edition (2019)
2. ECHA Guidance on Information Requirements and Chemical Safety Assessment (Chapter R.7a: Endpoint Specific Guidance, July 2017)
3. REACH Regulation (EC) 1907/2006, Annex VII, section 7.1
4. CLP Regulation (EC) 1272/2008, Annex I, section 1
5. ECHA Guidance on Application on the CLP Criteria, section 2.0 (v5.0, July 2017)