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Appearance / physical state / colour

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Reference
Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15-01-2018 – 15-01-2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to
Guideline:
other: As mention below
Principles of method if other than guideline:
On basis of visual perceptual / Olfactory property
GLP compliance:
no
Specific details on test material used for the study:
- Name of test material : 2-Naphthalenecarboxylic acid, 3-hydroxy-4-[(4-methyl-2-sulfophenyl)azo]-, calcium salt- Molecular formula : C18H14N2O6S.Ca- Molecular weight : 424.445 g/mole- Smiles notation : c12c(c(c(C(=O)[O-])cc1cccc2)O)\N=N\c1c(cc(C)cc1)S(=O)(=O)[O-].[Ca+2]- InChl : 1S/C18H14N2O6S.Ca/c1-10-6-7-14(15(8-10)27(24,25)26)19-20-16-12-5-3-2-4-11(12)9-13(17(16)21)18(22)23;/h2-9,21H,1H3, (H,22,23)(H,24,25,26);/q;+2/p-2/b20-19+;- Substance type: Organic - Physical state: Solid - Analytical purity: 87%- Impurities (identity and concentrations): 13%
Physical state at 20°C and 1013 hPa:
solid
Key result
Form:
solid: particulate/powder
Colour:
Red
Odour:
other: No data available
Substance type:
organic
Conclusions:
On the basis of physical observation and using the sense of smell, Calcium 3 -hydroxy-4 -[(4 -methyl-2 -sulphonatophenyl)azo]-2 -naphthoate was observed to be a solid red powder.
Executive summary:

On the basis of physical observation and using the sense of smell, Calcium 3 -hydroxy-4 -[(4 -methyl-2 -sulphonatophenyl)azo]-2 -naphthoate was observed to be a solid red powder.

Description of key information

On the basis of physical observation and using the sense of smell, Calcium 3 -hydroxy-4 -[(4 -methyl-2 -sulphonatophenyl)azo]-2 -naphthoate was observed to be a solid red powder.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information

On the basis of physical observation and using the sense of smell, Calcium 3 -hydroxy-4 -[(4 -methyl-2 -sulphonatophenyl)azo]-2 -naphthoate was observed to be a solid red powder.

From other reliable sources & authoritative databases it is concluded that calcium 3 -hydroxy-4 -[(4 -methyl-2 -sulfonatophenyl)diazenyl]-2 -naphthoate physically appear as a dark red solid powder.