LINEAR ALKYLBENZENE SULFONATE (LAS) - UNEP Chemicals

OECD SIDS LINEAR ALKYLBENZENE SULFONATE (LAS)
Reliability: 4 Not assignable. This study was given a reliability score of 4 because all the
original reports reviewed by the authors were not directly reviewed in the
compilation of this robust summary.
(e)
Type of test: static [ ]; semi-static [X]; flow-through [ ]; open-system [ ]; closed-system [
]
Species: Daphnia magna (Crustacea)
Endpoint: Mortality [X]; Reproduction rate [X]
Exposure period: 21days
Results: NOEC = 1.25-3.25 mg/L; LOEC = 2.25-3.75 mg/L
Geometric Mean NOEC = 1.99 mg/L (mean of studies using 5 different
diets)
Analytical monitoring: Yes [ ] No [ ] ? [X]
Method: ASTM proposed standard practice for conducting renewal life cycle toxicity
tests with Daphnia magna. Draft No. 1, August 1982. Ten 250 m/L beakers
were used for each test concentration. Seven beakers contained one daphnid
each and three beakers contained five daphnids each, for a total of 22
daphnids per concentration. All conditions were maintained as per protocol.
GLP: Yes [ ] No [] ? [X]
Test substance: Commercial C10-13 LAS, average chain length C11.8 (CAS #68411-30-3).
Remarks: NOEC and LOEC values represent the range of results from five tests using
different diets. Diet had at most a three-fold effect on the results, which is
within the variation expected within the tests themselves. Therefore, results
of different diets can be considered roughly equivalent to five replications of
the same diet. This is a key study for chronic aquatic toxicity to invertebrates
(see SIAR Table 12).
Reference: Taylor, M.J. 1985. Effect of diet on the sensitivity of Daphnia magna to
linear alkylbenzene sulfonate. In: Cardwell, R.D., Purdy, R. and Bahner,
R.C. Aquatic Toxicology and Hazard Assessment. Seventh Symposium pp.
53-72. ASTM STP 854, America Society for Testing and Materials,
Philadelphia.
Reliability: 2 Valid with restrictions
(f)
Type of test: static [ ]; semi-static [ X ]; flow-through [ ]; open-system [X]; closed-system
[ ]
Species: Daphnia magna (Crustacea)
Endpoint: Mortality [ ]; Reproduction rate [X]; Other [ ]
Exposure period: 21 day
Results: NOEC = 0.3 mg/L
Analytical monitoring: Yes [ ] No [X] ? [ ]
Method: OECD Guide-line 202, part 2 “Daphnia sp., Reproduction Test
GLP: Yes [ ] No [ ] ? [X]
Test substance: C10-13 LAS, with average chain length of C11.8 (CAS #68411-30-3)
Remarks: Information as cited in IUCLID Data Sheet for CAS #68411-30-3. Natural
water 3x weekly renewal pH 6.0-8.5; 20 + /-2 ºC; life-stage: 6-24 h.
Reference: European Commission. 2000a. Benzenesulfonic acid, C10-13-alkyl derivs.,
sodium salts. Year 2000 CD-ROM edition, citing Henkel KGaA.
Reliability: 4 Not assignable. The original study was not available for review.
(g)
Type of test: static [ ]; semi-static [X]; flow-through [ ]; other [ ]; open-system [ ];
closed-system [ ]
Species: Daphnia magna (Crustacea)
Endpoint: Mortality [ ]; Reproduction rate [X]; Other [ ]
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