4-({[4-(acryloyloxy)butoxy]carbonyl}oxy)benzoic acid

Biodegradation in water: screening tests

Administrative data

Endpoint:

biodegradation in water: ready biodegradability

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Guideline study in compliance with GLP-criteria.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2003

Report date:

2003

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

4-({[4-(acryloyloxy)butoxy]carbonyl}oxy)benzoic acid

EC Number:

608-403-9

Cas Number:

297132-04-8

Molecular formula:

C15H16O7

IUPAC Name:

4-({[4-(acryloyloxy)butoxy]carbonyl}oxy)benzoic acid

Test material form:

solid: crystalline

Details on test material:

- Name of test substance: 4-(4-Acryloyloxy-butoxycarbonyloxy)-benzoic acid
- Chemical name: no details
- Molecular formula: C15H16O7
- Aggregate state: solid, crystalline
- Colour: white
- Homogeneity: homogeneous
- Special conditions for storage: storage at room temperature

Study design

Oxygen conditions:

aerobic

Inoculum or test system:

activated sludge, non-adapted

Details on inoculum:

Activated sludge from laboratory wastewater plants treating municipal sewage.

Duration of test (contact time):

28 d

Initial test substance concentration

Initial test substance concentration 1

Initial conc.:

ca. 35 mg/L

Based on:

test mat.

Initial test substance concentration 2

Initial conc.:

20 mg/L

Based on:

other: TOC

Parameter followed for biodegradation estimation

Parameter followed for biodegradation estimation:

DOC removal

Details on study design:

TEST CONDITIONS
- Test temperature: 22 ± 2 °C

PRELIMINARY INVESTIGATIONS:
- TOC (mg/g): 594
- DOC (mg/g): 594

Reference substance

Reference substance:

aniline

Results and discussion

Test performance:

- Degradation degree of the reference substance after 14 days (% CO2/ThCO2): 70-80
- Degradation degree in the inhibition control after 14 days (% Co2/ThCO2): 70-80
- Physico-chemical (abiotic) elimination of the test substance (% DOC): <10 at the end of the test
- Elimination of the test substance by adsorption (% DOC): <10 after 5 days

% Degradation

Value:

80 - 90

Sampling time:

28 d

Details on results:

- Duration of the adaptation phase (days): 3
- Duration of the degradation phase (days): 22
- Degradation of the test substance at the end of the 10-day window (% DOC): 70-80
- Degradation degree of the test substance at the end of the test (% DOC): 80-90
- 10-day window criterion met: Yes

Any other information on results incl. tables

Degradation degree Dt% (CO2/ThCO2)

Day	RS	IH	PC	TS1	TS2	TSmean
0	0	0	-	0	0	0
1	4	0		4	2	3
2	4	9		8	10	9
3	15	22		43	9	26
4	96	72		48	49	27
5	37	35		38	31	35
6	46	45		46	41	44
7	51	51		52	49	51
8	55	56		59	56	58
9	60	60		64	61	63
10	64	64		68	65	67
11	67	67		73	70	72
12	70	69		76	73	75
13	72	71		79	75	77
14	74	73		79	76	78
15	75	75		78	76	78
16	78	77		78	76	77
17	79	78		78	76	77
18	80	79		78	76	77
19	78	80		78	76	77
20	80	80		83	81	82
21	82	81		87	83	85
22	84	81		90	84	87
23	84	81		91	84	88
24	84	81		92	84	88
25	85	81		92	84	88
26	85	81		92	84	88
27	85	81		92	84	88
28	86	81		92	85	89

RS: reference substance

IH: inhibition control

PC: abiotic control

TS: test substance