Quaternary ammonium compounds, C12-14-alkyltrimethyl, Me sulfates

Hydrolysis

Administrative data

Endpoint:

hydrolysis

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is readily biodegradable

Cross-reference

Reason / purpose for cross-reference:

data waiving: supporting information

Reference

Endpoint:

biodegradation in water: ready biodegradability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From March 24, 1997 to April 21, 1997

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)

Deviations:

no

GLP compliance:

yes

Oxygen conditions:

aerobic

Inoculum or test system:

activated sludge, domestic, non-adapted

Details on inoculum:

- Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): activated sludge, domestic and synthetic, non-adapted- Concentration of sludge: 5 ml Inoculum/1 L medium

Duration of test (contact time):

28 d

Initial conc.:

5 mg/L

Based on:

other: About 30% solution in water

Parameter followed for biodegradation estimation:

O2 consumption

Details on study design:

TEST SYSTEM-
Measuring equipment: oxygen electrode
- Test performed in open system: no

CONTROL AND BLANK SYSTEM
- Inoculum blank: yes
- Toxicity control: yes

Reference substance:

benzoic acid, sodium salt

Key result

Parameter:

% degradation (O2 consumption)

Value:

ca. 70 - ca. 80

Sampling time:

28 d

Details on results:

LUVIQUAT MONO LS is in this test biodegradable

Validity criteria fulfilled:

yes

Interpretation of results:

readily biodegradable

Conclusions:

Under the study conditions, the substance was considered to be readily biodegradable under aerobic condition (70-80% in 28 d).

Executive summary:

A study was conducted to determine the ready biodegradability of the test substance in freshwater according to OECD Guideline 301D (Ready Biodegradability: Closed Bottle Test), in compliance with GLP. The test substance was treated with activated sludge, domestic, non-adapted under aerobic conditions. The reference substance benzoic acid, sodium salt was biodegraded as expected. The test substance was tested at 5 mg/L concentration and the observed biodegradation was 70-80% in 28 d. Under the study conditions, the substance was considered to be readily biodegradable (BASF, 1997).