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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Solubility in organic solvents / fat solubility

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Administrative data

Link to relevant study record(s)

Description of key information

Gravimetric method was used to determine the solubility of the substance in organic solvent. The experimental value of solubility of 2-Naphthalenol, 1-[[4-(phenylazo)phenyl]azo]-, ar',ar''-Me derivs. in ethanol at 30°C was found to be 60000 mg/L indicating that this substance is soluble in ethanol. This value at 20  degC is equivalent to 40000 mg/L.

The experimental value of solubility of 2-Naphthalenol, 1-[[4-(phenylazo)phenyl]azo]-, ar',ar''-Me derivs. in Petroleum ether at 30°C was found to be 30000 mg/L indicating that this substance is soluble in petroleum ether.

Key value for chemical safety assessment

Solubility in organic solvents at 20°C:
40 000 mg/L

Additional information

Gravimetric method was used to determine the solubility of the substance in organic solvent. The experimental value of solubility of 2-Naphthalenol, 1-[[4-(phenylazo)phenyl]azo]-, ar',ar''-Me derivs. in ethanol at 30°C was found to be 60000 mg/L indicating that this substance is soluble in ethanol. This value at 20 degC is equivalent to 40000 mg/L. The experimental value of solubility of 2-Naphthalenol, 1-[[4-(phenylazo)phenyl]azo]-, ar',ar''-Me derivs. in Petroleum ether at 30°C was found to be 30000 mg/L indicating that this substance is soluble in petroleum ether.