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Incident Report

Subform I: General Information

1. Report Type.

Update the report

Incident Report Number: 2022-5122

2. Registrant Information.

Registrant Reference Number: M-819887-01-1

Registrant Name (Full Legal Name no abbreviations): Bayer CropScience Inc.

Address: Suite 200, 160 Quarry Park Boulevard SE

City: CALGARY

Prov / State: AB

Country: Canada

Postal Code: T2C 3G3

3. Select the appropriate subform(s) for the incident.

Scientific Study

4. Date registrant was first informed of the incident.

5. Location of incident.

6. Date incident was first observed.

Product Description

7. a) Provide the active ingredient and, if available, the registration number and product name (include all tank mixes). If the product is not registered provide a submission number.

PMRA Registration No.       PMRA Submission No.       EPA Registration No. Unknown

Product Name: 2,4-D-Trolamine ME 703 G

• Active Ingredient(s)
  • 2,4-D (PRESENT AS AMINE SALTS : DIMETHYLAMINE SALT, DIETHANOLAMINE SALT, OR OTHER AMINE SALTS)

7. b) Type of formulation.

Application Information

8. Product was applied?

Unknown

9. Application Rate.

10. Site pesticide was applied to (select all that apply).

11. Provide any additional information regarding application (how it was applied, amount applied, the size of the area treated etc).

To be determined by Registrant

12. In your opinion, was the product used according to the label instructions?

Unknown

Subform VII: Scientific Study

1. Study Reference

Title 2,4-D-trolamine ME 703 G: A 96-hour toxicity test with the freshwater diatom (Navicula pelliculosa)

Date 01-SEP-22

2. a) Is an extension needed to translate the document?

No

3. Type of incident identified in the study

New health or environmental hazard

4. Describe the incident identified in the study (e.g. study demonstrates an increased risk to non-Hodgkin's Lymphoma after exposure to pesticide X)

A 96-hour algal growth inhibition study (OECD No. 201, OCSPP 850.4500) was performed with the 2,4-D Trolamine ME 703 G formulation on the freshwater diatom species Navicula pelliculosa. The NOEC for this study, 1.15 mg 2,4-D acid equivalent (a.e.)/L (3.1 mg /L nominal concentration of the formulation), is lower than the current lowest non-vascular plant NOEC from a Navicula pelliculosa study with the dimethylamine salt of 2,4-D.

5. a) Was the study discontinued before completion?

No

5. b) Provide the reason for discontinuation

6. If the study is ongoing, what is the expected completion date?

For Registrant use only

7. Provide supplemental information here

The lowest EC50 for this study, 21.4 mg a.e./L (56 mg/L nominal concentration of the formulation) is higher than the current lowest EC50, 3.88 mg a.e./L.