Propargite

Other distribution data

Administrative data

Endpoint:

other distribution data

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

Not stated

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1980

Report date:

1980

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

See field "Any other information on materials and methods incl. tables" for information.

GLP compliance:

no

Remarks:

(not reported)

Type of study:

soil leaching

Media:

other: soil

Test material

Test material information

Constituent 1

Reference substance name:

Propargite

EC Number:

219-006-1

EC Name:

Propargite

Cas Number:

2312-35-8

Molecular formula:

C19H26O4S

IUPAC Name:

propargite

Test material form:

liquid

Details on test material:

- Name of test material (as cited in study report): Omite
- Radiochemical purity (if radiolabelling): 97.8 %
- Specific activity (if radiolabelling): 4.36 mCi/mmol
- Locations of the label (if radiolabelling): phenyl ring

Results and discussion

Any other information on results incl. tables

After leaching, the soil column contained 80 % applied radioactivity. The majority (74.2 %) was in the top 7.6 cm and this consisted of 20.8 % test material, 30.1 % TBPC and 4.3 % unidentified. The leachate contained 2.9 % applied radioactivity and was shown to consist of polar compounds but no propargite or TBPC.

Applicant's summary and conclusion

Conclusions:

Under the conditions of the test, in a loamy sand soil (with relatively low organic carbon content), propargite and its metabolite TBPC have low mobility.

Executive summary:

7.46 kg/ha Omite was applied to loamy sand, aerobically aged in the absence of light for 30 days and subsequently leached with water (1.27 column cm) for each of 45 days. Radioactivity in the soil and effluent was analysed by LSC, TLC, autoradiography, extraction and oxidation methods.

Of the applied radioactivity, 2.9 % was recovered in the aqueous effluent. The soil contained 77.9 % of which 20.8 % was identified as Omite and 30.1 % of the glycol ether of Omite. These results indicate that on loamy sand, Omite has low mobility and significantly degrades under simulated leaching conditions.