(1-methylethylidene)di-4,1-phenylenetetraphenyl diphosphate

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:

short-term toxicity to aquatic invertebrates

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

The data comes from a report of NATIONAL INDUSTRIAL CHEMICALS NOTIFICATION AND ASSESSMENT SCHEME (NICNAS), which is administered by the National Occupational Health and Safety Commission (NOHSC) of Australian Commission. Also the Data were determined by the OECD guideline.

Data source

Reference

Reference Type:

review article or handbook

Title:

Phosphoric acid, (1-methylethylidene) di-4,1-phenylene tetraphenyl ester (Fyrolflex BDP)

Author:

National Occupational Health and Safety Commission (Australia)

Year:

2000

Bibliographic source:

In:NATIONAL INDUSTRIAL CHEMICALS NOTIFICATION AND ASSESSMENT SCHEME

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

-

EC Number:

425-220-8

EC Name:

-

Cas Number:

5945-33-5

Molecular formula:

C39H34O8P2

IUPAC Name:

(1-methylethylidene)di-4,1-phenylenetetraphenyl diphosphate

Sampling and analysis

Analytical monitoring:

yes

Details on sampling:

Analysis of duplicate samples of the BDP in water after the 48-hour test period found concentrations of 1.03 and 1.06 mg/L, which was around 105% of the nominal concentration. Four replicate tests were conducted using ten Daphnia in each test vessel, together with a solvent control, using ten test animals.

Test solutions

Vehicle:

yes

Details on test solutions:

The test substance was firstly dissolved in dimethylformamide to produce a 10 g/L solution. An aliquot of this was added to the test vessels in order to produce the indicated nominal concentrations.

Test organisms

Test organisms (species):

Daphnia magna

Study design

Test type:

static

Water media type:

freshwater

Limit test:

yes

Total exposure duration:

48 h

Test conditions

Hardness:

around 100 mg/L as CaCO3

Test temperature:

controlled at 21± 1°C

pH:

always between 7.9 and 8.1

Dissolved oxygen:

between 7.7 and 8.2 mg/L

Nominal and measured concentrations:

Analysis of duplicate samples of the BDP in water after the 48-hour test period found concentration of 1.03 and 1.06 mg/L, which was around 105% of the nominal concentration.

Results and discussion

Effect concentrations

Effect concentrations 1

Duration:

48 h

Dose descriptor:

EC50

Effect conc.:

> 1 mg/L

Nominal / measured:

nominal

Effect concentrations 2

Duration:

48 h

Dose descriptor:

NOEC

Effect conc.:

> 1 mg/L

Nominal / measured:

nominal

Details on results:

No immobilisation of any of the 40 test Daphnia was observed during the course of the test, nor was any other aberrant behaviour observed. These results indicate that the BDP is not toxic to this species up to the limits of its water solubility.

Any other information on results incl. tables

These results indicate that the BDP is not toxic to this species up to the limits of its water solubility.

Applicant's summary and conclusion

Conclusions:

These results indicate that BDP is not toxic to this species up to the limits of its water solubility.