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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1998

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
DIN 38412-8 (Pseudomonas Zellvermehrungshemmtest)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
o-phenylenediacetonitrile
EC Number:
210-351-3
EC Name:
o-phenylenediacetonitrile
Cas Number:
613-73-0
Molecular formula:
C10H8N2
IUPAC Name:
2-[2-(cyanomethyl)phenyl]acetonitrile
Test material form:
solid: particulate/powder

Results and discussion

Effect concentrationsopen allclose all
Duration:
16 h
Dose descriptor:
EC0
Effect conc.:
ca. 127 mg/L
Key result
Duration:
16 h
Dose descriptor:
EC50
Effect conc.:
ca. 1 140 mg/L

Applicant's summary and conclusion

Executive summary:

The inhibitory effect of l,2-Phenylendiacetonitrile on bacteria multiplication was tested by the

Pseudomonas cell multþlication inhibition test according DIN 38 412, part 8.

The bacteria \ilere exposed to the substance in a concentration range from 75 mgll to 2000 mg/l.

After 16 hours incubation the cell multiplication was determined by measuring the degree of

turbidity. The top concentration of 2000 mgl caused an inhibitory effect of 80 % ,The calculated inhibition

values of each test concentration were evaluated by regression analysis. The concentrations of l0 %

and 50 % reduction in multiplication relative to the control were calculated by regression analysis.

The values of the effective concentrations were derived from the regression function:

EC10:       127 mg/l

EC50       1140 mg/l