Tris(methylphenyl) phosphate

Additional information on environmental fate and behaviour

Administrative data

Endpoint:

additional information on environmental fate and behaviour

Type of information:

other: publication

Adequacy of study:

supporting study

Study period:

`985

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Taken from publically available data published by the UK Environment Agency. Limited information reported; provided here as supporting information summary only.

Data source

Reference

Reference Type:

publication

Title:

Unnamed

Year:

1985

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

The uptake of pure tri-p-cresyl phosphate was studied in soybean plants (Casterline Jr et al. 1985). The soil used in the test was sterilised before use and consisted of 73 per cent sand, 17 per cent silt, eight per cent clay and two per cent organic matter. The test substance was added to the surface of the dry soil as a solution in acetone and once the solvent had evaporated, the soil was thoroughly mixed to give a tri-p-cresyl phosphate concentration of 10 mg/kg. The treated soil was then placed in pots (two kg per pot) and was covered with a 2 cm deep layer of untreated soil into which the seeds were added. The resulting plants were harvested after 90 days of growth had occurred and the stems, leaves, pods and seeds were analysed for the presence of tri-p-cresyl phosphate and any metabolites by a gas chromatographic method.

GLP compliance:

no

Type of study / information:

The uptake of pure tri-p-cresyl phosphate was studied in soybean plants

Test material

Test material information

Constituent 1

Reference substance name:

Reaction mass of 3-methylphenyl bis(4-methylphenyl) phosphate and bis(3-methylphenyl) 4-methylphenyl phosphate and tris(3-methylphenyl) phosphate

EC Number:

809-930-9

Cas Number:

1330-78-5

Molecular formula:

C21H21O4P

IUPAC Name:

Reaction mass of 3-methylphenyl bis(4-methylphenyl) phosphate and bis(3-methylphenyl) 4-methylphenyl phosphate and tris(3-methylphenyl) phosphate

Test material form:

liquid: viscous

Details on test material:

- Name of test material (as cited in study report): tri-p-cresyl phosphate
- Molecular formula (if other than submission substance): Not specified.
- Molecular weight (if other than submission substance): Not specified.
- Smiles notation (if other than submission substance): Not specified.
- InChl (if other than submission substance): Not specified.
- Structural formula attached as image file (if other than submission substance): Not specified.
- Substance type: Organic
- Physical state: Liquid
- Analytical purity: Not specified.
- Impurities (identity and concentrations): Not specified.
- Composition of test material, percentage of components: Not specified.
- Isomers composition: Not specified.
- Purity test date: Not specified.
- Lot/batch No.: Not specified.
- Expiration date of the lot/batch: Not specified.
- Radiochemical purity (if radiolabelling): Not applicable
- Specific activity (if radiolabelling): Not applicable
- Locations of the label (if radiolabelling): Not applicable
- Expiration date of radiochemical substance (if radiolabelling): Not applicable
- Stability under test conditions: Not specified.
- Storage condition of test material:
- Other:

Results and discussion

Any other information on results incl. tables

The results of the tissue analysis are shown in Table 3.8 below:

 

Table 3.8 Uptake and metabolism of tri-p-cresyl phosphate by soybean plants

after 90 days 

 

Plant part	Weight of plant part (g fresh weight)	Concentration of tri-pcresyl phosphate (µg/g fresh weight)	Total amount of tri-pcresyl phosphate (µg)
Seed	3.0	<0.0001	-
Pod	5.4	0.09	0.5
Leaf	7.2	1.14	8.2
Stem	4.0	6.28	25.1
Total shoot	19.6	1.72	33.8

 

Applicant's summary and conclusion

Conclusions:

On the basis of the total uptake of 0.17% total, uptake in plant tissue is not proposed to be a significant concern.

Executive summary:

On the basis of the total uptake of 0.17% total, uptake in plant tissue is not proposed to be a significant concern.