LINEAR ALKYLBENZENE SULFONATE (LAS) - UNEP Chemicals

OECD SIDS LINEAR ALKYLBENZENE SULFONATE (LAS)
Chlorella kessleri 4 3.5[1]
Microcystis
aeruginosa, dossier
4.3s (2)
Plectonema
boryanum 4
Scenedesmus
subspicatus, dossier
4.3d (2)
Scenedesmus
subspicatus, dossier
4.3e (2)
Scenedesmus
subspicatus, dossier
4.3f (1)
Scenedesmus
subspicatus, dossier
4.3g (1)
Scenedesmus
subspicatus,
geometric mean
Selenastrum
capricronutum,
dossier 4.3a (2)
Higher Plants
Elodea canadensis,
dossier 4.3o (2)
Lemna minor, dossier
4.3p (2)
Population
Growth Rate
(4 d)
Population
Growth Rate
(3 d)
Population
Growth Rate
(3 d)
Population
Growth Rate
(3 d)
Population
Growth Rate
(3 d)
Population
Growth Rate
(4 d)
Growth,
Productivity
(28 d)
Frond Count
(7 d)
0.3 6 11.6 0.3 0.80 (0.3-10.7 7 ) [4]
54.3 6 11.6 54.3
18 12.0 26
2.4 11.6 2.4
0.4 11.6 0.4
15 [1]
6.1 7.7 (0.8-105 7 ) [4]
0.5 11.8 0.58 3.8 (1-39 7 ) [9]
4 11.6 4 -- 3
0.9 6 11.8 1.1 -- 3
*Reliability of Studies = (2) or (1), except for Van de Plassche et al. (1999), where Reliability = (4), Original
Data Not Reviewed
1 The normalization procedure is described in SIAR Annex 3.
2 Feijtel & van de Plassche, 1995.
3 Not reviewed by van de Plassche et al. 1999.
4 No valid chronic study identified.
5 Not available.
6 EC50 value divided by 3; as documented in Annex 3, the average EC50/NOEC ratio for LAS is 3.
7 Ranges include EC50/3.
8 Most sensitive endpoint.
9 Geometric mean of trout chow/algae NOEC (0.5 mg/L) and yeast diet EC10 (0.99 mg/L).
10 Geometric mean of 5 diets considered by the authors of the study to be equivalent to 5 replications of the same
diet.
Table 12A also provides the available NOEC values normalized to C11.6 LAS by the QSAR
procedures used by van de Plassche et al. (1999) and described in detail in Annex 3. Geometric
mean normalized NOEC values are provided for species (P. promelas, D. magna and S.
subspicatus) for which multiple studies are available. These normalized NOEC values range from
0.25 to 6.1 mg/L for the 12 species for which we were able to document reliable values. The
similarity of these values, as shown in Table 12A, to those of van de Plassche et al. (1999) supports
the validity of the BKH (1993) data compilation and the van de Plassche et al. (1999) assessment of
the data despite the fact that not all of the studies cited by these authors could be retrieved and
validated.
UNEP PUBLICATIONS 41