Candidate Chemical List Frequently Asked Questions

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

This list contains ~1,100 Candidate Chemicals (which are not part of a group) and chemical groups (which contain multiple Candidate Chemicals). If all group members are counted, the informational list contains ~2,300 Candidate Chemicals.

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

As of October 15, 2013, the "initial" list contained ~150 grouped chemicals, or ~250 ungrouped chemicals.  (See the answer to FAQ #1 for an explanation of chemical groups.)

3. 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).

4. What do I have to do if I manufacture a product that contains a Candidate Chemical?

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?" for more details.

5. 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)].

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