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Chemical List Frequently Asked Questions

Candidate Chemical Database Authoritative Lists  /  Chemical List FAQs

1. What chemicals are included on the informational Candidate Chemicals List, and the Group Member List?

The informational Candidate Chemicals List includes chemicals that exhibit “a hazard trait and/or an environmental or toxicological endpoint” and appear on one or more of the 23 “authoritative lists” identified in the Safer Consumer Products regulations (Cal. Code Regs., tit. 22, § 69502.2(a)). In addition to “standalone” chemicals, the informational list includes groups of chemicals. Some groups were taken from an authoritative list; in other cases, DTSC placed chemicals into well-recognized groups or created new groupings of closely related substances (e.g., parent chemicals and their metabolites; nitro PAHs).

The “Group Member List” contains a list of chemicals that are found in each group.

Please review “Exclusions from the Informational List” on the Chemical Lists page for more information on what is excluded from this list.

2. How many chemicals are on the informational Candidate Chemicals List?

This list contains ~1,100 Candidate Chemicals and groups (when standalone chemicals and chemical groups – but not their members – are counted).  If all group members are counted, the informational list contains ~2,300 Candidate Chemicals.

Please review “Exclusions from the Informational List” on the Chemical Lists page for more information.

3. What’s the “initial” Candidate Chemical List?

DTSC must develop an initial priority products list within six months after the SCP regulations take effect [Cal. Code Regs., tit. 22, § 69503.6, subsec. (a)]..  DTSC may place a product on this list only if one or more Candidate Chemicals that are the basis for listing it as a priority product appear on 1) at least one hazard trait list (see “authoritative lists” page), and 2) on at least one exposure potential list. The “initial” Candidate Chemicals List is composed of Candidate Chemicals that meet these criteria.

Please review “'Initial' Candidate Chemicals Informational List” on the Chemical Lists page for more information.

4. How many chemicals are on the “initial” Candidate Chemicals List?

The “initial” list contains 153 grouped chemicals.  When all individual group members and standalone chemicals are counted, there are 248 chemicals.  (See the answer to FAQ #1 for an explanation of chemical groups.)

5. When will the informational Candidate Chemicals List be updated?

The Safer Consumer Products regulations require DTSC to periodically update the informational list to reflect changes to the authoritative lists [Cal. Code Regs., tit. 22, § 69502.3, subsec. (a)]. DTSC plans to undertake this review and updating process at least once per year. DTSC may also add or remove individual chemicals or chemical source lists to/from the Candidate Chemicals list, pursuant to section 69502.3, by adopting new regulations.

6. What is a Candidate Chemical?

The regulations define a Candidate Chemical as a chemical that exhibits a “hazard trait and/or an environmental or toxicological endpoint” and is either: (a) found on one or more of the authoritative lists specified in section 69502.2(a) of the regulations; or (b) listed by DTSC using the criteria specified in section 69502.2(b).

7. What is a Chemical of Concern?

A Chemical of Concern is a Candidate Chemical that is the basis for a product being listed as a Priority Product. See section 69501.1(a)(21) for the regulatory definition.

8. When does a Candidate Chemical become a Chemical of Concern?

A Candidate Chemical only becomes a Chemical of Concern when it is the basis for a product being listed as a Priority Product pursuant to section 69503.5. This process requires a public rulemaking process under the Administrative Procedure Act (commencing with Government Code section 11340).

9. What do I have to do on October 1, 2013 if my product contains a CC?

DTSC’s publication of the informational Candidate Chemicals List imposes no requirements on the manufacturers of products that contain Candidate Chemicals.  The requirements to notify DTSC, conduct alternatives analyses, etc., only apply when a Candidate Chemical is designated as a Chemical of Concern – i.e., when it is the basis for a product being listed as a Priority Product pursuant to section 69503.5.  

See "What Does this List Mean to Me?" on the Chemical Lists page for more details.

10. What is a hazard trait?

A “hazard trait” is an intrinsic property of a chemical that may contribute to adverse effects in humans, animals, or in ecological communities (see definition in section 69501.1(a)(36) of the regulations, which references the definition in Chapter 54 of Title 22 of the California Code of Regulations).

11. How were the hazard traits for the Candidate Chemicals identified? 

DTSC identified hazard traits for Candidate Chemicals from the authoritative list (if available), or from related materials (e.g., fact sheets) produced by the organization responsible for the authoritative list. DTSC has not performed an exhaustive search of reliable information to determine the hazard traits for each Candidate Chemical. Prior to proposing a Priority Product, DTSC must specify the hazard traits and/or environmental or toxicological endpoints known to be associated with those chemicals [section 69503.5(b)(2)(A)].