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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Reference
Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
23.03.2013 -09.04.2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
On basis of visual perceptual/Olfactory property
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Specific details on test material used for the study:
- Name of test material: 4-(4-Aminophenylazo)benzenesulphonic acid
- Molecular formula: C12H11N3O3S
- Molecular weight: 277.303 g/mol
- Smiles notation: S(c1ccc(\N=N\c2ccc(N)cc2)cc1)(O)(=O)=O
- InChl: 1S/C12H11N3O3S/c13-9-1-3-10(4-2-9)14-15-11-5-7-12(8-6-11)19(16, 17)18/h1-8H,13H2,(H,16,17,18)/b15-14+
- Substance type: organic
- Physical state: Solid
Physical state at 20°C and 1013 hPa:
solid
Remarks:
at 37°C and 970 hPa
Key result
Form:
other: Amorphous
Colour:
Light brown
Odour:
other: Characteristic
Substance type:
organic
Conclusions:
On the basis of visual perception and olfactory property, test chemical was observed to be a light brown organic amorphous solid with characteristic odor at 37°C and 970 hPa.
Executive summary:

On the basis of visual perception and olfactory  property, test chemical was observed to be a light brown organic amorphous solid with characteristic odor at 37°C and 970 hPa.

Description of key information

On the basis of visual perception and olfactory  property, test chemical was observed to be a light brown organic amorphous solid with characteristic odor at 37°C and 970 hPa.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information

On the basis of visual perception and olfactory  property, test chemical was observed to be a light brown organic amorphous solid with characteristic odor at 37°C and 970 hPa.

Other supporting data from authoritartive database also indicates that the test chemical was oberved to be light brown coloured solid in appearance with characteriestic odour.