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Inert Ingredients - Reassessment Decision Documents: O

This table lists completed inert ingredient tolerance reassessment decision documents. A decision document includes the risk assessment and the decision memorandum. Some documents pertain to more than one chemical.

The list of inert ingredients used in food and non-food pesticide products is available in our InertFinder.

Specific questions or accessibility issues on the following decision documents should be forwarded to PV Shah ( of the Inert Ingredient Assessment Branch.

Inert Ingredient1 CAS Reg. No. and Name2 Decision Document3 Reassessed Date4 CFR Citation5
a-Oleoyl-w-hydroxypoly (oxyethylene), average molecular weight (in amu) of 600 9004-96-0
Poly(oxy-1,2-ethanediyl), a[(9Z)-1-oxo-9-octadecenyl]-w-hydroxy-
Decision Document 6/28/2005 180.910
a-Oleoyl-w-(oeloyloxy) poly(oxyethylene) derived from a-hydro-w-hydroxypoly (oxyethylene)(molecular weight 600 amu) 9005-07-6
Poly(oxy-1,2-ethanediyl), a[(9Z)-1-oxo-9-octadecenyl]-w-hydroxy- 
Decision Document 6/28/2005 180.920
n-Octyl Alcohol 111-87-5
n-octyl alcoho
Decision Document 6/21/2006 180.920
Octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate 2082-79-3 Decision Document 8/16/2006 180.930
Octyl epoxytallate 61788-72-5
Fatty acids, tall-oil, opoxidized, octyle esters
Decision Document 2/23/2006 180.930
Oleic acid diester of a-hydro-w-hydroxypoly (oxyethylene), the poly(oxythylene) having molecular weight (in amu) of 400 9005-07-6
Poly(oxy-1,2-ethanediyl), a[(9Z)-1-oxo-9-octadecenyl]-w-hydroxy-
Decision Document 6/28/2005 180.910
Oxalic Acid 144-62-7 Decision Document 9/6/2005 180.930
Oxo-Alkyl Acetates
  1. 88230-35-7
    Oxo-hexyl acetate
  2. 90438-79-2
    oxo-heptyl acetate
  3. 108419-33-5
    Oxo-octyl acetate
  4. 108419-33-6
    Oxo-nonyl acetate
  5. 108419-34-7
    Oxo-decyl acetate
  6. 108419-35-8
    Oxo-tridecyl acetate
Decision Document 11/04/2004 180.920

The content of each column in the Tolerance Reassessment Status table is described below:

Inert Ingredient

The inert ingredient’s name as it appears in the Code of Federal Regulations (CFR).

CAS Reg. No. and Name

The inert ingredient’s CAS Registry Number is the unique identification number that the Chemical Abstracts Service (CAS) has assigned to the chemical substance.

Chemical substances often have multiple names. In addition to the inert ingredient’s name that appears in the CFR, EPA utilizes the CAS 9th Collective Index Name, which is the systematic chemical name associated with the CAS Registry Number.

Decision Documents

Reassessment decision documents for each inert ingredient are provided here. A decision document includes the risk assessments and the decision memo. Please note that several inert ingredients may be grouped in a document.

Reassessed Date

The date the decision memo was signed and the inert ingredient completed tolerance reassessment.

CFR Citations

How each inert ingredient may be legally used in food-use pesticide products is described in the Code of Federal Regulations (CFR). Up-to-date CFR citations are found at U.S. Government Printing Office website.

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