Hydrogen [1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphtholato(2-)][1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphtholato(2-)]chromate(1-) , compound with 3-[(2-ethylhexyl)oxy]propylamine (1:1)

Solubility in organic solvents / fat solubility

Administrative data

Endpoint:

solubility in organic solvents / fat solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: well performed study according to guideline developed and agreed upon by the ETAD in january 2005 for colorants with very low solubility

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: method developed by ETAD

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Hydrogen [1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphtholato(2-)][1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphtholato(2-)]chromate(1-) , compound with 3-[(2-ethylhexyl)oxy]propylamine (1:1)

EC Number:

276-857-1

EC Name:

Hydrogen [1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphtholato(2-)][1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphtholato(2-)]chromate(1-) , compound with 3-[(2-ethylhexyl)oxy]propylamine (1:1)

Cas Number:

72812-34-1

Molecular formula:

C32H18CrN6O8.C11H25NO.H

IUPAC Name:

Chromate(1-), [1-[2-[2-(hydroxy-kO)-4-nitrophenyl]diazenyl-kN1]-2-naphthalenolato(2-)-kO][1-[2-[2-(hydroxy-kO)-5-nitrophenyl]diazenyl-kN1]-2-naphthalenolato(2-)-kO]-, hydrogen, compd. with 3-[(2-ethylhexyl)oxy]-1-propanamine (1:1:1)

Results and discussion

Solubility in organic solvents / fat solubility

Medium:

n-octanol

Solubility:

776 mg/L

Temp.:

23 °C

Test substance stable:

yes

Details on results:

The determination was repeated three times and the average value was caöculated from the individual results.
Individual results:
Absorption Solubility
(d = 1 cm n-octanol
dilution 1:100) mg/l
a1 0.239 750
a2 0.251 787
a3 0.253 792

Average: 776 mg/L

Applicant's summary and conclusion

Conclusions:

The solubility of the substance in n-octanol at 23°C is 776 mg/L

Executive summary:

The n-octanol solubility of the substance was determined 3 times according to the method developed by the ETAD at 23°C. The average of the results was 776 mg/L.