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Physical & Chemical properties

Water solubility

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
14-07-2017 – 20-07-2017
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: spectrophotometric analytical method
Principles of method if other than guideline:
The water solubility determination of test item 1-(2-methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol (CAS No. 85-83-6) was done as per the OECD guideline 105 byspectrophotometric analytical method as per OECD 101.
GLP compliance:
no
Type of method:
other: spectrophotometric analytical method
Key result
Water solubility:
0.023 mg/L
Conc. based on:
test mat.
Temp.:
25 °C
Remarks on result:
other: No other detail available

Obseravtionn Table:

Sample stirring

Concentration obtained on

Dilution factor

Solubility value obtained

 

the basis of standard curve

 

(mg/L)

24 hour

-

-

-

48 hour

0.010 mg/L

-

0.010 mg/L

72 hour

0.037 mg/L

-

0.037 mg/L

Conclusions:
The water solubility determination of test item 1 -(2 -methyl-4 -(2 -methylphenylazo)phenylazo)-2 -naphthol (CAS No. 85 -83 -6) was done as per the OECD guideline 105 by spectrophotometric analytical method as per OECD 101. The solubility of (1 -(2 -
methyl-4 -(2 -methylphenylazo)phenylazo)-2 -naphthol of 85 -83 -6 ) in water was determine to be 0.023 mg/L at 25°C.
Thus it is concluded that test chemical is insoluble in water.
Executive summary:

The water solubility determination of test item 1 -(2 -methyl-4 -(2 -methylphenylazo)phenylazo)-2 -naphthol (CAS No. 85 -83 -6) was done as per the OECD guideline 105 by spectrophotometric analytical method as per OECD 101. The solubility of (1 -(2 -

methyl-4 -(2 -methylphenylazo)phenylazo)-2 -naphthol of 85 -83 -6 ) in water was determine to be 0.023 mg/L at 25°C.

Thus it is concluded that test chemical is insoluble in water.

Description of key information

The water solubility determination of test item 1 -(2 -methyl-4 -(2 -methylphenylazo)phenylazo)-2 -naphthol (CAS No. 85 -83 -6) was done as per the OECD guideline 105 by spectrophotometric analytical method as per OECD 101. The solubility of (1 -(2 -

methyl-4 -(2 -methylphenylazo)phenylazo)-2 -naphthol of 85 -83 -6 ) in water was determine to be 0.023 mg/L at 25°C.

Thus it is concluded that test chemical is insoluble in water.

Key value for chemical safety assessment

Water solubility:
0.023 mg/L
at the temperature of:
25 °C

Additional information

The water solubility determination of test item 1 -(2 -methyl-4 -(2 -methylphenylazo)phenylazo)-2 -naphthol (CAS No. 85 -83 -6) was done as per the OECD guideline 105 by spectrophotometric analytical method as per OECD 101. The solubility of (1 -(2 -

methyl-4 -(2 -methylphenylazo)phenylazo)-2 -naphthol of 85 -83 -6 ) in water was determine to be 0.023 mg/L at 25°C.

Thus it is concluded that test chemical is insoluble in water.

Hence based on the value and data from other reliable sources, Solvent Red 24 can be considered to be insoluble in water.