2,20-dichloro-13,31-diethyl-4,22-dioxa-13,18,31,36-tetraazanonacyclo[19.15.0.03,19.05,17.06,14.07,12.023,25.024,32.025,30]hexatriaconta-1(36),2,5,7,9,11,14,16,18,20,23,25,27,29,32,34-hexadecaene

Partition coefficient

Administrative data

Endpoint:

partition coefficient

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Remarks:

Test procedure according to method of Analytical Expert Group ETAD (Ecological and Toxicological Association of Dyes and Organic Pigment Manufacturer)

Cross-reference

Cross-reference 1

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

solubility in organic solvents / fat solubility

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Remarks:

Test procedure according to method of Analytical Expert Group ETAD (Ecological and Toxicological Association of Dyes and Organic Pigment Manufacturer)

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

other: Analytical Expert Group ETAD

Medium:

n-octanol

Solubility:

0.33 mg/L

Temp.:

24 °C

Test substance stable:

yes

Cross-reference 2

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Remarks:

test procedure similar to OECD 105

Reason / purpose for cross-reference:

reference to same study

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Deviations:

yes

Remarks:

modified taking into account the very low water solubility of the test substance

Principles of method if other than guideline:

The method for the determination and analytical investigation is according to the method that was agreed upon at the "Analytical Experts Meeting" of ETAD (Basel) on January 12, 2005.

Type of method:

flask method

Water solubility:

25 µg/L

Temp.:

24 °C

pH:

ca. 7

_{The solubility of C.I. Pigment Violet 23 in water at ambient temperature, determined under the conditions as mentioned above, is 25 µg per liter (mean, n = 4, sigma = 14).}

Table 1: Individual results

	Absorption (d = 10 cm)	µg/L
a1	0.001399	14
a2	0.001486	15
a3	0.003358	28
a4	0.005701	44

Conclusions:

the test substance is practically insoluble in water (< 0.1 mg/L)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2005

Report date:

2005

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: ETAD Analytical expert group

Version / remarks:

method for substances with very low solubility in both, water and n-octanol

Principles of method if other than guideline:

Based on the determined solubilities in water and n-octanol the partition coefficient was calculated. Instead of saturated solvent
systems pure solvents were used.

Type of method:

estimation method (solubility ratio)

Partition coefficient type:

octanol-water

Test material

Test material information

Constituent 1

Reference substance name:

2,20-dichloro-13,31-diethyl-4,22-dioxa-13,18,31,36-tetraazanonacyclo[19.15.0.0³,¹⁹.0⁵,¹⁷.0⁶,¹⁴.0⁷,¹².0²³,³⁵.0²⁴,³².0²⁵,³⁰]hexatriaconta-1(36),2,5,7(12),8,10,14,16,18,20,23(35),24(32),25,27,29,33-hexadecaene

EC Number:

606-790-9

Cas Number:

215247-95-3

Molecular formula:

C34H22Cl2N4O2

IUPAC Name:

2,20-dichloro-13,31-diethyl-4,22-dioxa-13,18,31,36-tetraazanonacyclo[19.15.0.0³,¹⁹.0⁵,¹⁷.0⁶,¹⁴.0⁷,¹².0²³,³⁵.0²⁴,³².0²⁵,³⁰]hexatriaconta-1(36),2,5,7(12),8,10,14,16,18,20,23(35),24(32),25,27,29,33-hexadecaene

Test material form:

solid: nanoform

Study design

Analytical method:

photometric method

Results and discussion

Partition coefficient

Type:

log Pow

Partition coefficient:

ca. 1.1

Temp.:

24 °C

pH:

ca. 7

Any other information on results incl. tables

Both solubilites were determined with the same test material batch and at the same temperature

Solubility of C.I. Pigment Violet 23 in n-octanol: 0.33 mg/l

Water solubility of C.I. Pigment Violet 23 : 0.025 mg/l

P_{ow PV 23} = 0.33 mg/l / 0.025 mg/L

P_{ow PV 23} = 13.2

log P_{ow PV 23} = 1.12