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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Information from a widely used QSAR that is considered to be reliable.
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Reference Type:
other: QSAR model
Title:
Ecological Structure Activity Relationships (ECOSAR) model) v1.11
Author:
US EPA
Year:
2012
Bibliographic source:
http://www.epa.gov/oppt/newchems/tools/21ecosar.htm

Materials and methods

Principles of method if other than guideline:
Not applicable. QSAR. Results considered to be predictive of standard tests.

Test material

Constituent 1
Chemical structure
Reference substance name:
7-methylidenepentadecane
EC Number:
603-419-2
Cas Number:
13043-55-5
Molecular formula:
C16H32
IUPAC Name:
7-methylidenepentadecane
Details on test material:
Structure used for modelling (Smiles code) CCCCCCC(=C)CCCCCCCC

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
static
Water media type:
freshwater
Total exposure duration:
48 h

Results and discussion

Details on results:
EC50 is expected to exceed the water solubility of the substance.

Any other information on results incl. tables

ECOSAR Version 1.11 Results Page

SMILES : CCCCCCC(=C)CCCCCCCC

CHEM :

CAS Num:

ChemID1:

MOL FOR: C16 H32

MOL WT : 224.43

Log Kow: 8.119 (EPISuite Kowwin v1.68 Estimate)

Log Kow: (User Entered)

Log Kow: (PhysProp DB exp value - for comparison only)

Melt Pt: -36.00 (deg C, User Entered for Wat Sol estimate)

Melt Pt: (deg C, PhysProp DB exp value for Wat Sol estimate)

Wat Sol: 0.001272 (mg/L, EPISuite WSKowwin v1.43 Estimate)

Wat Sol: (User Entered)

Wat Sol: (PhysProp DB exp value)

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Values used to Generate ECOSAR Profile

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Log Kow: 8.119 (EPISuite Kowwin v1.68 Estimate)

Wat Sol: 0.001272 (mg/L, EPISuite WSKowwin v1.43 Estimate)

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Available Measured Data from ECOSAR Training Set

------------------------------------------------

No Data Available

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ECOSAR v1.11 Class-specific Estimations

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Neutral Organics

Predicted

ECOSAR Class Organism Duration End Pt mg/L (ppm)

=========================== ================== ======== ====== ==========

Neutral Organics : Daphnid 48-hr LC50 0.000589

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Class Specific LogKow Cut-Offs

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If the log Kow of the chemical is greater than the endpoint specific cut-offs presented below, then no effects at saturation are expected for those endpoints.

Neutral Organics:

----------------

Maximum LogKow: 5.0 (Fish 96-hr LC50; Daphnid LC50, Mysid LC50)

Applicant's summary and conclusion