Information Requests Monitoring System

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Request ID: 159
Request From: Steve Toth
Date Requested: Jun 21, 2006
Request: Please note the following question from EPA regarding the use of mineral oil as an insecticide during storage of post-harvest grain (corn and sorghum). Please ask the experts in your respective states and territories and submit responses to the Southern Region IPM Center Information Request Monitoring System by Wednesday, July 5, 2006. Thanks. Steve Toth --------------------------------------------------------------------- Does anyone use Mineral Oil as an insecticide during the storage of post-harvest grain (corn and sorghum)? This is the only Tolerance Expression listed in 40 CFR for the Active Ingredient uses of Mineral Oil (that is the specific chemical listed at 40 CFR 180.149). I actually can not find any active ingredient Tolerance Expressions for the Aliphatic Petroleum Hydrocarbons. The actual Food Use Tolerances for these spray oil products seem to be covered under the name "Petroleum oils", as listed as exempt from the requirement of a tolerance, at 40 CFR 180.905. I have worked with folks in BEAD to try to find any labels with the post-harvest grain storage use, and we can not seem to find any such labels. Because we can not find any such labels, and if there seem to be no such usage now, I think EPA would move to revoke this tolerance expression; however, I thought I should ask you to check with your stakeholders, before we go public with a notice of revocation. Thanks for your help, in advance. Bentley Gregg OPP/SRRD/PRB 703-308-8178

Responses
Responder: Mark Mossler
State: PR
Date Requested: Jun 22, 2006
Response: Please see FL comments.

Responder: Mark Mossler
State: VI
Date Requested: Jun 22, 2006
Response: Please see FL comments.

Responder: Mark Mossler
State: FL
Date Requested: Jun 22, 2006
Response: The main use of mineral oil is for dust control, which would not fall under the FIFRA as such.

Responder: Glenn Chappell
State: VA
Date Requested: Jun 30, 2006
Response: I checked a few labels and found "mineral oil" and "FDA approved food grade oils" on some of the labels as carriers. I am not sure how a "revocation" would impact this use. I would lean towards keeping it as a safety valve instead of having everything lumped together under "Petroleum oils."

Responder: Steve Bambara
State: NC
Date Requested: Jul 06, 2006
Response: I know nothing about using mineral oil on post harvest small grains. No one does this to my knowledge. I don't think there are any registered chemicals for this use. The only thing I might think of is the carrier in some of the empty bin treatments could leave a residue for which a tolerance might be needed. Steve Bambara Department of Entomology North Carolina State University

Responder: Roy Parker
State: TX
Date Requested: Jul 06, 2006
Response: Don, there is a lot of mineral oil used on various grain types, but as far as I know it is for dust control and not for insect control. If you see fit forward this statement to your EPA contact. Roy Parker Texas A&M University

Responder: John Van Duyn
State: NC
Date Requested: Jul 06, 2006
Response: I also have no knowledge about the use of mineral oil on grains in storage and for the purpose of protection against insect pests. John Van Duyn Department of Entomology North Carolina State University

Responder: Steve Brown
State: GA
Date Requested: Jul 06, 2006
Response: I have been the Extension Entomoloist responsible for stored products in Georgia for 16 years and have never heard of anyone using mineral oil products. Loss of that tolerance would have no impact on us here in Georgia. Hope this helps. Steve L. Brown

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