Benzenesulfonic acid, 4-C10-13-sec-alkyl derivs., compds. with ethanolamine

Genetic toxicity: in vitro

Administrative data

Endpoint:

in vitro gene mutation study in bacteria

Remarks:

Type of genotoxicity: gene mutation

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1993

Report date:

1994

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method B.13/14 (Mutagenicity - Reverse Mutation Test Using Bacteria)

Principles of method if other than guideline:

Directive 84/449/EEC, B.14 Mutagenicity (Salmonella typhimurium - reverse mutation assay)" 1984; equivalent to OECD 471

GLP compliance:

yes

Type of assay:

bacterial reverse mutation assay

Test material

Test material information

Constituent 1

Reference substance name:

Benzenesulfonic acid, C10-13-alkyl derivs., sodium salts

EC Number:

270-115-0

EC Name:

Benzenesulfonic acid, C10-13-alkyl derivs., sodium salts

Cas Number:

68411-30-3

Molecular formula:

LAS is the sodium salt of linear alkylbenzene sulfonic acid with alkyl carbon chain lengths ranging from C10 to C13 and averaging 11.6. The primary structure is a C10 to C13 linear alkyl chain with a para-substituted benzene sulfonic acid sodium salt group attached at any of the secondary alkyl carbon positions

IUPAC Name:

sodium 4-undecylbenzenesulfonate

Details on test material:

Marlon A 390 (CAS #68411-30-3) Sodium salts of C10-13 alkyl benzenesulphonic acid, average alkyl chain length = C11.6; activity 91.3%

Method

Species / strain

Species / strain / cell type:

S. typhimurium TA 1535, TA 1537, TA 98 and TA 100

Details on mammalian cell type (if applicable):

also TA 1538

Metabolic activation:

with and without

Metabolic activation system:

Arochlor-induced S9 fraction

Test concentrations with justification for top dose:

8, 40, 200, 1000 and 5000 ug/plate

Vehicle / solvent:

Water solution at 50 g/L

Controls

Untreated negative controls:

yes

Negative solvent / vehicle controls:

yes

Remarks:

water

True negative controls:

yes

Positive controls:

yes

Remarks:

aminoanthracene

Positive control substance:

other: nitrofluorene, sodium azide and aminoacridine

Results and discussion

Test results

Key result

Species / strain:

S. typhimurium TA 1535, TA 1537, TA 98 and TA 100

Metabolic activation:

with and without

Genotoxicity:

negative

Remarks:

with and without activation

Cytotoxicity / choice of top concentrations:

cytotoxicity

Vehicle controls validity:

valid

Untreated negative controls validity:

valid

Positive controls validity:

valid

Additional information on results:

TA 1538 also tested negative. During the pre-incubation test, signs of toxicity were noted at concentrations as low as 125 ug/plate. No precipitation of the product was observed at any concentration tested.

Applicant's summary and conclusion

Conclusions:

LAS is not mutagenic in the Ames test.

Executive summary:

A bacterial mutagenicity study (Ames test) was conducted on LAS and was found to be negative for mutagenicity.