Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
distribution modelling
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Title:
No information
Author:
Mackay, D. et al. 1996a. Assessing the fate of new and|existing chemicals: a five-stage process. Environ. Toxicol.|Chem. 15(9): 1618-1626.|Mackay,D. et al. 1996b. Evaluating the environmental fate|of a variety of types of chemicals using the EQC model. |Environ. Toxicol. Chem. 15(9): 1627-1637.|Meylan, W. and PH Howard. 1999a. User's Guide for MPBPVP,|Version 1.4. Syracuse Research Corporation. North|Syracuse, New York. December, 1999.|Meylan, W. and PH Howard. 1999b. User's Guide for KOWWIN,|Version 1.6. Syracuse Research Corporation. North|Syracuse, New York. July, 1999.|Meylan, W. and PH Howard. 1999c. User's Guide for|WSKOWWIN, Version 1.3. Syracuse Research Corporation. North|Syracuse, New York. April, 1999.|Meylan, W. and PH Howard. 2000a. User's Guide for AOPWIN,|Version 1.9. Syracuse Research Corporation. North|Syracuse, New York. March, 2000.|Meylan, W. and PH Howard. 2000b. User's Guide for BIOWIN,|Version 4.0. Syracuse Research Corporation. North|Syracuse, New York. February, 2000. |Reimer Analytical & Associates, Inc. 2001a.|Physical-Chemical Property of TNPP (26523-78-4). Hydrolysis|as a Function of pH (OECD 111). Study No. 171-1234HY,|Vancouver, BC, Canada, August 10, 2001.|Reimer Analytical & Associates, Inc. 2001b.|Physical-Chemical Property of TNPP (26523-78-4). Melting|Point (OECD 102). Study No. 171-1234MP, Vancouver, BC,|Canada, August 10, 2001.|Reimer Analytical & Associates, Inc. 2001c.|Physical-Chemical Property of TNPP (26523-78-4). Solubility|in Water (OECD 105). Study No. 171-1234SW, Vancouver, BC,|Canada, August 10, 2001.|Reimer Analytical & Associates, Inc. 2001d.|Physical-Chemical Property of TNPP (26523-78-4).|n-Octanol/Water Partition Coefficient (Expert Statement)|Study No. 171-1234, Vancouver, BC, Canada, August 10, 2001.|Syracuse Research Corporation. 2000. User's Guide for|Estimation Programs Interface for Windows, Version 3,|Syracuse Research Corporation. North Syracuse, New York.

Materials and methods

Model:
calculation according to Mackay, Level III
Media:
other: air/water/soil/sediment

Test material

Constituent 1
Chemical structure
Reference substance name:
Tris(nonylphenyl) phosphite
EC Number:
247-759-6
EC Name:
Tris(nonylphenyl) phosphite
Cas Number:
26523-78-4
Molecular formula:
C45H69O3P
IUPAC Name:
Phenol, nonyl-, phosphite (3:1)
Constituent 2
Reference substance name:
tris(nonylphenyl) phosphite
Molecular formula:
C45H69O3P
IUPAC Name:
tris(nonylphenyl) phosphite

Results and discussion

Percent distribution in media

Air (%):
1.4
Water (%):
4.5
Soil (%):
5.6
Sediment (%):
88.6

Any other information on results incl. tables

The following measured data were reported and used in the fugacity-based distribution modeling. TNPP undergoes hydrolysis with half-lives of 13 to 14 hours at pH values of 4 to 9 (at 22 °C) (Reimer, 2001a), has a melting point averaging 6 °C (Reimer, 2001b), and a water solubility of < 0.6 mg/L (24 °C) (Reimer, 2001c). In addition, an expert statement with a calculated log Kow value of 21.6 was provided (Reimer, 2001d). This expert statement was reviewed and is correct. Using the EPIWIN models described above, additional parameters were estimated. They include a water solubility of 1.3 E-15 mg/L, a vapor pressure of 5 E-12 Pa, an atmospheric half-life of 5.07 hours, water and soil biodegradation half-lives of 900 hours, and a sediment half-life of 3600 hours. Excepting the water and soil biodegradation half-lives, these values were all used in the distribution modeling. Hydrolysis is the dominant fate process in water and would be equally so in soil, so a 14 hour half-life was used in those compartments. The results of the distribution modeling (assuming equal emissions to air, water, and soil) were: Air 1.4 %, Water 4.5%, Soil 5.6%, and Sediment 88.6%.

Applicant's summary and conclusion

Conclusions:
The vast majority of TNPP released into the environment partitions to the sediment.
Executive summary:

The vast majority of TNPP released into the environment partitions to the sediment.