### Question
What does exemption category mean?


### Answer
**Exemption category** has the following meaning in *40 CFR § 723.175*:

> a category of chemical substances for which a person(s) has applied for or been granted an exemption under section 5(h)(4) of the Act (15 U.S.C. 2604).

#### Citation:
  - *40 CFR § 723.175*
  - Heading: **Title 40—Protection of Environment > PART 723—PREMANUFACTURE NOTIFICATION EXEMPTIONS > Subpart B—Specific Exemptions > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)**

