3-chloropropyne

Biodegradation in water: screening tests

Administrative data

Endpoint:

biodegradation in water: screening tests

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Company internal study according to GLP. Limitations in design and reporting but results considered reliable and adequate for assessment.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1988

Report date:

1988

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

3-chloropropyne

EC Number:

210-856-9

EC Name:

3-chloropropyne

Cas Number:

624-65-7

Molecular formula:

C3H3Cl

IUPAC Name:

3-chloroprop-1-yne

Details on test material:

- Name of test material (as cited in study report): Propargylchlorid
- Batch: 5/86, vers. No 117/6

Study design

Oxygen conditions:

not specified

Inoculum or test system:

other: unadapted inoculum

Duration of test (contact time):

28 d

Initial test substance concentration

Initial conc.:

98 mg/L

Based on:

DOC

Reference substance

Reference substance:

diethylene glycol

Results and discussion

% Degradation

Parameter:

% degradation (DOC removal)

Value:

75

Sampling time:

28 d

Any other information on results incl. tables

Percentages elimination of DOC at different sampling times.

Time	DOC	DOC		% DOC
	control	Test subst.	mg/L	Elimination
0	9	104	104,5	-
		105
3h	9	89	89	18
		89
1d	9	71	70,5	37
		70
3d	9	36	36,5	72
		37
7d	9	40	42,5	66
		45
10d	9	37	37	71
		37
14d	9	34	34,5	74
		35
21d	9	37	36,5	72
		36
27d	9	33	34	74
		35
28d	9	34	34	74
		34