---
kind: "section"
citation: "40 C.F.R. § 716.45"
title: "40"
number: "716.45"
heading: "How to report on substances and mixtures."
url: "https://uscodex.org/cfr/40/716.45"
---

# §716.45. How to report on substances and mixtures.


[Section 716.120](/cfr/40/716.120.md) lists substances and mixtures, in order by Chemical Abstract Service Registry Number and by alphabetical order. Studies of listed substances and listed mixtures shall be reported as follows:

- (a) When a substance is individually listed under [§ 716.120(a)](/cfr/40/716.120.md?p=a), studies of the substance and studies of mixtures known to contain the substance must be reported as studies of that substance.
- (b) When two or more substances are listed as a mixture under [§ 716.120(b)](/cfr/40/716.120.md?p=b), studies of the listed mixture and studies of any mixture known to contain the listed mixture must be reported as studies of the listed mixture.
- (c) Studies of the following preparations of a substance must be reported as studies of the substance itself, not as studies of mixtures known to contain the substance.
  - (1) **The substance in aqueous solution.**
  - (2) The substance containing a small amount of an additive, such as a stabilizer, emulsifier, or other chemical added for purposes of maintaining the integrity or physical form of the substance.
  - (3) The substance of the grade/purity specified in each rule promulgated under [15 U.S.C. 2607(d)](/usc/15/2607.md?p=d).

## Notes

### Amendments

[51 FR 32726, Sept. 15, 1986, as amended at 63 FR 15774, Apr. 1, 1998]

### Authority

Authority: 15 U.S.C. 2607(d).

### Source

Source: 51 FR 32726, Sept. 15, 1986, unless otherwise noted.

### Amendments

[51 FR 32726, Sept. 15, 1986, as amended at 63 FR 15774, Apr. 1, 1998]