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EC number: 947-340-4 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data

Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Study period:
- 2017
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
- Justification for type of information:
- 1. SOFTWARE
EPI Suite v4.11 Estimation Programs Interface Suite™ for Microsoft® Windows v 4.11. US EPA, United
States Environmental Protection Agency, Washington, DC, USA.
2. MODEL (incl. version number)
KOCWIN v2.00
3. SMILES OR OTHER IDENTIFIERS USED AS INPUT FOR THE MODEL
O=C(OCCO)CC(C(=O)OCCO)CP2(=O)Oc3c(c1c2cccc1)cccc3
4. SCIENTIFIC VALIDITY OF THE (Q)SAR MODEL
The following table gives statistical information for the MCI (Molecular Connectivity Index, first-order)
training and validation Datasets. The statistics pertain to the experimental log Koc and the MCI estimate
d log Koc:
MCI Methodology
Training Training Validation
No Corrections with Corrections Data set
number 69 447 158
r2corr coef 0.967 0.900 0.850
std deviation 0.247 0.340 0.583
avg deviation 0.199 0.273 0.459
The following table gives statistical information for the log Kow-based regression: training and validation
sets. The statistics pertain to the experimental log Koc and the Log Kow estimated log Koc:
Log Kow Methodology
Training Training Validation
No Corrections with Corrections Data set
number 68 447 150
r2corr coef 0.877 0.855 0.778
std deviation 0.478 0.396 0.679
avg deviation 0.371 0.307 0.494
- Defined endpoint: adsprption/desorption, Koc
- Unambiguous algorithm:
log Kow-method:
Separate equations correlating log Koc with log Kow were derived for nonpolar and polar compounds because it was statistically more accurate to do so than to use the approach taken with the MCI-based method. The equation derived by the non-polar (no correction factor) regression is:
log Koc = 0.8679 Log Kow - 0.0004
(n = 68, r2 = 0.877, std dev = 0.478, avg dev = 0.371)
For the multiple-linear regression using correction factors, log Kow was included as an individual descriptor. For compounds having correction factors, the equation is:
log Koc = 0.55313 Log Kow + 0.9251 + ΣPfN
where ΣPfN is the summation of the products of all applicable correction factor coefficients multiplied by the number of times (N) that factor is counted for the structure.
MCI-method:
log Koc = 0.5213 MCI + 0.60 + ΣPfN
where ΣPfN is the summation of the products of all applicable correction factor coefficients multiplied by the number of times (N) that factor is counted for the structure.
- Defined domain of applicability:
The minimum and maximum values for molecular weight are the following:
Training Set Molecular Weights:
Minimum MW: 32.04
Maximum MW: 665.02
Average MW: 224.4
Validation Molecular Weights:
Minimum MW: 73.14
Maximum MW: 504.12
Average MW: 277.8
5. ADEQUACY OF THE RESULT
The substance falls within the applicability domain described above and, therefore,
the predicted value can be considered reliable. - Qualifier:
- according to guideline
- Guideline:
- other: Guidance on information requirements and chemical safety assessment, Chapter R.6: QSARs and grouping of chemicals, ECHA
- Deviations:
- not applicable
- GLP compliance:
- no
- Type of method:
- other: QSAR
- Media:
- other: not applicable
- Radiolabelling:
- no
- Details on study design: HPLC method:
- Estimation software: EPISuite v 4.11, KOCWIN v2.00, MCI based method
- Key result
- Sample No.:
- #1
- Type:
- Koc
- Value:
- 10 L/kg
- Temp.:
- 25 °C
- Remarks on result:
- other: MCI based method
- Key result
- Sample No.:
- #1
- Type:
- log Koc
- Value:
- 1 000 dimensionless
- Temp.:
- 25 °C
- Remarks on result:
- other: MCI based method
- Key result
- Sample No.:
- #2
- Type:
- Koc
- Value:
- 0.846 L/kg
- Temp.:
- 25 °C
- Remarks on result:
- other: Kow method
- Key result
- Sample No.:
- #2
- Type:
- log Koc
- Value:
- -0.073 dimensionless
- Temp.:
- 25 °C
- Remarks on result:
- other: Kow method
- Transformation products:
- not specified
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- It can be concluded that DOP-ITS has a low Koc and is weakly sorbed and is therefore mobile in soil. The KOC value of 10 l/kg derived with EPISuite™, based on the MCI-model can be considered reliable for both modelling and environmental fate assessments.
- Executive summary:
The adsorption coeffcient log Koc of DOP-ITS (Bis(2-hydroxyethyl)(6H-dibenz[c,e][1,2]oxaphosphorin-6-ylmethyl)succinate P-oxide) was determined by a non-experimental calculation method.
DOP-ITS is a slightly water soluble, organic substance.
As a slightly polar substance, it is expected that DOP-ITS would not strongly adsorb to organic matter in soil to an appreciable extent.
This is confirmed by the estimated KOC values of 10 (MCI method) and 0.85 l/kg (log Kow method).
According to the EPI SUITE User's Guide, the MCI methodology is somewhat more accurate than the Log Kow methodology, although both methods yield good results.
For risk assessment purposes the calculated Koc of 10 l/kg is used.
Reference
SMILES : O=C(OCCO)CC(C(=O)OCCO)CP2(=O)Oc3c(c1c2cccc1)cccc3
CHEM :
MOL FOR: C21 H23 O8 P1
MOL WT : 434.39
--------------------------- KOCWIN v2.00 Results ---------------------------
Koc Estimate from MCI:
---------------------
First Order Molecular Connectivity Index ........... : 14.481
Non-Corrected Log Koc (0.5213 MCI + 0.60) .......... : 8.1485
Fragment Correction(s):
2 Aliphatic Alcohol (-C-OH) ........... : -2.6358
2 Ester (-C-CO-O-C-) or (HCO-O-C) ...... : -2.5939
* OrganoPhosphorus [P=O], aromatic ...... : -2.4257
Corrected Log Koc .................................. : 0.4931
Over Correction Adjustment to Lower Limit Log Koc ... : 1.0000
Estimated Koc: 10 L/kg <===========
Koc Estimate from Log Kow:
-------------------------
Log Kow (Kowwin estimate) ......................... : 0.33
Non-Corrected Log Koc (0.55313 logKow + 0.9251) .... : 1.1076
Fragment Correction(s):
2 Aliphatic Alcohol (-C-OH) ........... : -0.8229
2 Ester (-C-CO-O-C-) or (HCO-O-C) ...... : -0.1312
* OrganoPhosphorus [P=O], aromatic ...... : -0.2263
Corrected Log Koc .................................. : -0.0727
Estimated Koc: 0.8458 L/kg <===========
Description of key information
The adsorption coeffcient log Koc of DOP-ITS (Bis(2-hydroxyethyl)(6H-dibenz[c,e][1,2]oxaphosphorin-6-ylmethyl)succinate P-oxide) was determined by a non-experimental calculation method.
DOP-ITS is a slightly water soluble, organic substance.
As a slightly polar substance, it is expected that DOP-ITS would not strongly adsorb to organic matter in soil to an appreciable extent.
This is confirmed by the estimated KOC values of 10 (MCI method) and 0.85 l/kg (log Kow method).
According to the EPI SUITE User's Guide, the MCI methodology is somewhat more accurate than the Log Kow methodology, although both methods yield good results.
For risk assessment purposes the calculated Koc of 10 l/kg is used.
Key value for chemical safety assessment
- Koc at 20 °C:
- 10
Additional information
[LogKoc: 1000.0]
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