UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C

. 20460


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OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION MEMORANDUM
SUBJECT: BEAD Chemical Profile for Registration Review: Undecylenic acid (085501) FROM:

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TO: Monisha Kaul, Biologist 

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# ~ Biological Analysis Branch Katherine Stebbins, Biologist**~~** L--. Science Information and

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# r Economic Analysis Branch [1tU-f Biological and Economic Analysis Divisi6n (7503P) Arnet Jones, Chief 

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## Branch**~WU** Diann Sims,

# Chief**~** Science Information and Analysis Branch Timothy Kiely, Chief 

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. ision (7503 Joel Wolf, Chemical Review Manager Risk Management and Implementation Branch 2 Pesticide Reevaluation Division (7508P)
Product Review Panel date: May 25, 2010 INTRODUCTION The purpose ofthis document is to convey usage information and a broad overview ofthe pest management roles ofpesticides that are beginning to undergo registration review. The anticipated audience consists ofthe team ofEPA staffcurrently evaluating the registration status ofundecylenic acid, and eventually the general public. This document builds upon the data already provided inthe "Usage and Label Use DataPackages" that are also provided to



### 1Registration Reviewteams by BEAD. The document is based on infonnation and data available to BEAD as ofMay 12,2011. 

### Labeled Use Sites Undecylenic acid is labeled for use inproducts thatmay be applied to cats (adults and kittens), dogs (adults and puppies), and reptiles. In addition, it may be used to treat pet living/sleeping quarters. 

### Common Formulation and Application Methods Undecylenic acid is fonnulated as anemulsifiable concentrate orready to use liquid. The emulsifiable concentrate may be applied as a shampoo to cats, kittens, dogs, and puppies. The ready to use liquid may be applied directly to the animal as a spray or shampoo and may be used to treatpet living/sleeping quarters. 

### Undecylenic Acid Usage BEAD reviewed available usage sources and did not find any infonnation. However, usage may be occurring belowthe reporting threshold. 

### BIOLOGICAL ASPECTS RELEVANT TO UNDECYLENIC ACID Undecylenic acid is an insecticide and miticide registered for use to kill fleas and mites onpets. There are two active products registered byEPA that include undecylenic acid. These products include butanedioic acid as an active ingredient along with undecylenic acid. According to the labels, both products are not to be used on animals under 12 weeks ofage. As a note, it appears that undecylenic acid was previously registered for use inpetproducts targeting lice and ticks, butthese are no longerregistered. Undecylenic acid is a fatty acid with fungicidal properties. It is included in various products such as antifungal creams but such products are not related to EPA registered uses on pets. 

### mSTORY OF BEAD ASSESSMENTS FORUNDECYLENIC ACID There have been no emergency exemptions (Section 18) requests for Undecylenic acid. A search ofthe BEAD data base did not yield any infonnation regarding impact assessments for Undecylenic acid. There was one document in the BEAD records from 1993 concerning an HED pre-registration conference withregistrant ElfAtochem's petition for Undecylenic acid's registration requirements for the intended use ofUndecylenic acid as a component ofa soil nutrient mix for mushrooms when pulverized soybean kernels are also added to the nutrient mix. Undecylenic acid acts as a soybean growth inhibitor and would be used where soybean was added to the nutrient mix because not all the soybeankernels would be pulverized. The request was for greenhouse use only. No further infonnation was available.


### REFERENCES: 1993

- Residue Chemistry Reviews V. 1 - Pre registration Conference with ElfAtochem concerning Undecylenic acid registration requirements.



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