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Incident Report

Subform I: General Information

1. Report Type.

New incident report

Incident Report Number: 2022-5731

2. Registrant Information.

Registrant Reference Number: M-534677-01-1

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. 20364      PMRA Submission No.       EPA Registration No.

Product Name: ETHOFUMESATE TECHNICAL HERBICIDE

• Active Ingredient(s)
  • ETHOFUMESATE

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 Ethofumesate: Micronucleus test in Chinese hamster V79 cells in vitro

Date 23-SEP-15

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)

Ethofumesate produced a statistically significant increase in micronuclei in Chinese hamster V79 cells in the absence of S9 mix at 72.3 ug/mL and in the presence of S9 mix at 221.4 ug/mL (cytotoxic dose). Under the experimental conditions reported, ethofumesate was mutagenic in Chinese Hamster V79 cells when tested up to cytotoxic concentrations.

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

This result should not affect the current risk assessment because ethofumesate did not produce micronuclei in an in vivo mouse study at a dose of 8100 mg/kg body weight.