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EC number: 226-109-5 | CAS number: 5281-04-9
Appearance / physical state / colour
Administrative data
Link to relevant study record(s)
- 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
- 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.
Reference
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.
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