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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
appearance / physical state / colour
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:
The appearance of the test item is described in a reliable study report on the physical-chemical properties of the substance. Since no guideline was followed and no details on the methods are given, the description is considered as reliable with restrictions.
Cross-reference
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
04 Jan - 09 Feb 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
GLP compliance:
no
Type of method:
column elution method
Water solubility:
< 5 µg/L
Temp.:
20 °C
pH:
6.3

Working range

The calibration curve fitted over a range from 2.5µg/L and 49.3µg/L with r² = 1.000. Quadratic fit was used.

 

Recovery

In the course of the recovery experiment, an average recovery rate of 91.9% was determined.

 

Study results

 

The concentrations of the test item in the different test solutions were calculated automatically using the equation of the calibration curve. The results for the duplicate analyses are listed in the following table:

 

Flow rate

 

[mL/h]

Fraction No.

Volume of combined fractions

[mL]

Test Item**

 

[μg/L]

25.0

1 (1-2)

25

2.39*

 

2 (3-4)

25

2.10*

 

3 (5-6)

25

1.17*

 

4 (7-8)

25

1.82*

 

5 (9-10)

25

1.87*

 

6 (11-12)

25

2.59

 

7 (13-14)

25

0.96*

 

8 (15-16)

25

1.16*

 

 

 

 

12.5

1 (1-2)

25

1.53*

 

2 (3-4)

25

1.87*

 

3 (5-6)

25

2.11*

 

4 (7-8)

25

2.51

 

5 (9-10)

25

1.48*

 

6 (11-12)

25

2.01*

 

7 (13-14)

25

2.52

 

8 (15-16)

25

1.95*

* below LOQ, but it was decided to give the values.

** values of the main component (Octadecanoic acid, octyl ester).

 

The water solubility at both flow rates (25.0 mL/h and 12.5 mL/h) yielded values varying between 1.0 µg/L and 2.6 µg/L. The following value for water solubility of the test item can thus be reported as: < 5 µg/L

 

The water solubility was determined at 20 °C.

The pH value of the collected aqueous fractions was 6.3.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
The description of the physical state of the substance was based on a visual inspection of the substance at room temperature and normal pressure.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Octadecanoic acid, C16-18-alkyl esters
EC Number:
298-680-9
EC Name:
Octadecanoic acid, C16-18-alkyl esters
Cas Number:
93820-97-4
Molecular formula:
C36H72O2 C34H68O2
IUPAC Name:
Octadecanoic acid, C16-18 (even numbered)-alkyl esters

Results and discussion

Physical state at 20°C and 1013 hPa:
solid
Form / colour / odour
Form:
solid
Colour:
Yellowish
Substance type:
organic

Applicant's summary and conclusion