[Code of Federal Regulations]
[Title 40, Volume 21]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR158.155]

[Page 92-93]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 158--DATA REQUIREMENTS FOR REGISTRATION--Table of Contents
 
             Subpart C--Product Chemistry Data Requirements
 
Sec. 158.155  Product composition.

    Information on the composition of the pesticide product must be 
furnished. The information required by paragraphs (a), (b) and (f) of 
this section must be provided for each product. In addition, if the 
product is produced by an integrated system, the information on 
impurities required by paragraphs (c) and (d) must be provided.
    (a) Active ingredient. The following information is required for 
each active ingredient in the product:
    (1) If the source of any active ingredient in the product is an EPA-
registered product:
    (i) The chemical and common name (if any) of the active ingredient, 
as listed on the source product.
    (ii) The nominal concentration of the active ingredient in the 
product, based upon the nominal concentration of active ingredient in 
the source product.
    (iii) Upper and lower certified limits of the active ingredient in 
the product, in accordance with Sec. 158.175.
    (2) If the source of any active ingredient in the product is not an 
EPA-registered product:
    (i) The chemical name according to Chemical Abstracts Society 
nomenclature, the CAS Registry Number, and any common names.
    (ii) The molecular, structural, and empirical formulae, and the 
molecular weight or weight range.
    (iii) The nominal concentration.
    (iv) Upper and lower certified limits in accordance with 
Sec. 158.175.
    (v) The purpose of the ingredient in the formulation.
    (b) Inert ingredients. The following information is required for 
each inert ingredient (if any) in the product:
    (1) The chemical name of the ingredient according to Chemical 
Abstracts Society nomenclature, the CAS Registry Number, and any common 
names (if known). If the chemical identity or

[[Page 93]]

chemical composition of an ingredient is not known to the applicant 
because it is proprietary or trade secret information, the applicant 
must ensure that the supplier or producer of the ingredient submits to 
the Agency (or has on file with the Agency) information on the identity 
or chemical composition of the ingredient. Generally, it is not required 
that an applicant know the identity of each ingredient in a mixture that 
he uses in his product. However, in certain circumstances, the Agency 
may require that the applicant know the identity of a specific 
ingredient in such a mixture. If the Agency requires specific knowledge 
of an ingredient, it will notify the applicant in writing.
    (2) The nominal concentration in the product.
    (3) Upper and lower certified limits in accordance with 
Sec. 158.175.
    (4) The purpose of the ingredient in the formulation.
    (c) Impurities of toxicological significance associated with the 
active ingredient. For each impurity associated with the active 
ingredient that is determined to be toxicologically significant, the 
following information is required:
    (1) Identification of the ingredient as an impurity.
    (2) The chemical name of the impurity.
    (3) The nominal concentration of the impurity in the product.
    (4) A certified upper limit, in accordance with Sec. 158.175.
    (d) Other impurities associated with the active ingredient. For each 
other impurity associated with an active ingredient that was found to be 
present in any sample at a level equal to or greater than 0.1 percent by 
weight of the technical grade active ingredient, the following 
information is required:
    (1) Identification of the ingredient as an impurity.
    (2) Chemical name of the impurity.
    (3) The nominal concentration of the impurity in the final product.
    (e) Impurities associated with an inert ingredient. [Reserved]
    (f) Ingredients that cannot be characterized. If the identity of any 
ingredient or impurity cannot be specified as a discrete chemical 
substance (such as mixtures that cannot be characterized or isomer 
mixtures), the applicant must provide sufficient information to enable 
EPA to identify its source and qualitative composition.