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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well documented study according GLP and OECD 121.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC))
Qualifier:
according to guideline
Guideline:
EU Method C.19 (Estimation of the Adsorption Coefficient (KOC) on Soil and Sewage Sludge Using High Performance Liquid Chromatography (HPLC))
GLP compliance:
yes (incl. QA statement)
Type of method:
HPLC estimation method
Media:
soil

Test material

Constituent 1
Chemical structure
Reference substance name:
trisodium 2-(2-sulfonatoethoxy)ethane-1-sulfonate ethenesulfonate
EC Number:
700-978-5
Molecular formula:
C2H3O3S.Na C4H8O7S2Na2
IUPAC Name:
trisodium 2-(2-sulfonatoethoxy)ethane-1-sulfonate ethenesulfonate
Details on test material:
- Name of test material (as cited in study report):Sodium vinyl sulphonate (SVS) solution (Proviplast 2202)
- Analytical purity: 25.09%
- Lot/batch No.: 200911040014
- Storage condition of test material: ambient room temperature 20 to 30°C
- Other:
Radiolabelling:
not specified

Study design

Test temperature:
Column compartment temperature was maintained at 40°C.

HPLC method

Details on study design: HPLC method:
EQUIPMENT
- Apparatus: HPLC-Agilent 1200 series
- Type: a reverse-phase, isocratic HPLC at 1.0 mL/minute flow rate and a 1.0 microL injection volume was used
-columln: a cyanopropyl column of length 250 mm x 4.6 mm id x 5 microm particle size, supplied by M/s. E.Merck India Ltd. was used
- Detection system: DAD detector at 220 nm, bandwidth 4 nm supported by chem station software

MOBILE PHASES
- Type: methanol/water 30:70 (v/v)
- Solutes for dissolving test and reference substances: methanol

DETERMINATION OF DEAD TIME
- Method: by inert substances which are not retained by the column which was formamide

REFERENCE SUBSTANCES
- Identity: formamide, acetanilide, aniline, atrazine, methyl benzoate, N,N-dimethyl benzamide, phenol

DETERMINATION OF RETENTION TIMES
- Quantity of test substance introduced in the column:1.0 microL injection volume was used

REPETITIONS
- Number of determinations: standerds and samples were analyzed in duplicate

EVALUATION
- Calculation of capacity factors k':log k': -0.32; -0.35; 0.32; 0.05; 0.05; -0.43 for acetanilide, phenol, anilide, atrazine, methyl benzoate, N,N-dimethyl benzamide, respectively
- Calculation of retention times: measured retantion times of reference substances: 4.365; 2.295; 9.162; 6.254; 6.292; 4.067 min for acetanilide, phenol, anilide, atrazine, methyl benzoate, N,N-dimethyl benzamide, respectively
- Determination of the log Koc value: 1.25; 1.32; 2.07; 1.81; 1.80; 1.52 for acetanilide, phenol, anilide, atrazine, methyl benzoate, N,N-dimethyl benzamide, respectively

Batch equilibrium or other method

Analytical monitoring:
not specified
Details on sampling:
no data

Results and discussion

Adsorption coefficientopen allclose all
Type:
Koc
Value:
25.59
Type:
log Koc
Value:
1.41

Applicant's summary and conclusion

Conclusions:
The Koc value for SVS was determined to be 25.59 +/-0.013 (Log Koc was 1.41)