Hexasodium 2-[8-amino-7-[[5-[[4-chloro-6-[[3-[[2-(sulfato)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl] amino]-2 sulfonatophenyl]azo]-1-hydroxy-3,6-disulfonato-2-naphthalenyl]azo]-naphthalene-1,5-disulfonate

Adsorption / desorption

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: The study has been presented to ECHA in the framework of a NONS notification. The document is now public because presented more than 12 years ago.

Data source

Reference

Reference Type:

other: body responsible for the test

Title:

Unnamed

Year:

2001

Materials and methods

Test guideline

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))

GLP compliance:

yes

Type of method:

HPLC estimation method

Test material

Test material information

Constituent 1

Reference substance name:

-

EC Number:

401-310-2

EC Name:

-

Cas Number:

93912-64-2

Molecular formula:

Hill formula: C37H23N10O22S7Cl.6Na CAS formula: C37H23N10O22S7ClNa6

IUPAC Name:

Hexasodium 2-[8-amino-7-[[5-[[4-chloro-6-[[3-[[2-(sulfato)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl] amino]-2 sulfonatophenyl]azo]-1-hydroxy-3,6-disulfonato-2-naphthalenyl]azo]-naphthalene-1,5-disulfonate

Results and discussion

Adsorption coefficient

Type:

Koc

Value:

< 1.25

Results: HPLC method

Details on results (HPLC method):

The draft document states that the measurement of adsorption coefficient should be carried out on substances in their ionised and unionised forms. However, since the material is a salt of a sulphonic acid this is not possible and the testing was performed at pH 7.0