CAS 51-52-5
Is Propylthiouracil banned where you sell?
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Status
Status by market
Banned, limited, needs a warning, or no rule we know of. US states also follow federal rules, shown in their own row.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025; Packaged food and beverages: 7 Oct 2026; Consumer electronics and small appliances: 1 Jan 2025; Batteries, e-bikes and power banks: 1 Oct 2026), and this doesn't mean it's allowed.
Warning required when exposure exceeds the threshold (NSRL (µg/day): 0.7). In force since 1 Jan 1989.
- Chemical
- Propylthiouracil
- Type of toxicity
- cancer
- Listed by
- the State's Qualified Experts (SQE)
- CAS No.
- 51-52-5
- Date listed
- 1 Jan 1988
- NSRL or MADL (µg/day)
- 0.7
Prop 65 list row: Propylthiouracil · fetched 2026-10-08
California OEHHA: 27 CCR 27001(opens in a new tab)Warning required when exposure exceeds the threshold (no MADL listed for this row). In force since 1 Jul 1991.
- Chemical
- Propylthiouracil
- Type of toxicity
- developmental toxicity
- Listed by
- formally required to be labeled or identified (FR)
- CAS No.
- 51-52-5
- Date listed
- 1 Jul 1990
Prop 65 list row: Propylthiouracil · fetched 2026-10-08
California OEHHA: 27 CCR 27001(opens in a new tab)We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025; Batteries, e-bikes and power banks: 16 Sep 2023), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: not covered; Consumer electronics and small appliances: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 18 May 2026; Packaged food and beverages: 19 Aug 2026; Consumer electronics and small appliances: 1 Jul 2026; Batteries, e-bikes and power banks: 13 Aug 2026), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 19 Aug 2026; Packaged food and beverages: 13 Nov 2025; Consumer electronics and small appliances: 1 Jan 2025; Batteries, e-bikes and power banks: 1 Jan 2025), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 12 Jul 2024; Packaged food and beverages: 1 Apr 2026; Consumer electronics and small appliances: 3 Sep 2026; Batteries, e-bikes and power banks: 1 Sep 2026), and this doesn't mean it's allowed.
We have no rule for it here. Our coverage starts 27 Mar 2026 (Home and kitchen goods: 27 Mar 2026; Cosmetics and personal care: 8 Oct 2026; Packaged food and beverages: 8 Oct 2026; Consumer electronics and small appliances: 24 Mar 2026; Batteries, e-bikes and power banks: 20 Aug 2026), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025; Packaged food and beverages: 7 Oct 2026; Consumer electronics and small appliances: 1 Jan 2025; Batteries, e-bikes and power banks: 1 Oct 2026), and this doesn't mean it's allowed.
- Status
- Warning required
- Requirement, dates and source
Warning required when exposure exceeds the threshold (NSRL (µg/day): 0.7). In force since 1 Jan 1989.
- Chemical
- Propylthiouracil
- Type of toxicity
- cancer
- Listed by
- the State's Qualified Experts (SQE)
- CAS No.
- 51-52-5
- Date listed
- 1 Jan 1988
- NSRL or MADL (µg/day)
- 0.7
Prop 65 list row: Propylthiouracil · fetched 2026-10-08
California OEHHA: 27 CCR 27001(opens in a new tab)Warning required when exposure exceeds the threshold (no MADL listed for this row). In force since 1 Jul 1991.
- Chemical
- Propylthiouracil
- Type of toxicity
- developmental toxicity
- Listed by
- formally required to be labeled or identified (FR)
- CAS No.
- 51-52-5
- Date listed
- 1 Jul 1990
Prop 65 list row: Propylthiouracil · fetched 2026-10-08
California OEHHA: 27 CCR 27001(opens in a new tab)
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025; Batteries, e-bikes and power banks: 16 Sep 2023), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: not covered; Consumer electronics and small appliances: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025, and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 18 May 2026; Packaged food and beverages: 19 Aug 2026; Consumer electronics and small appliances: 1 Jul 2026; Batteries, e-bikes and power banks: 13 Aug 2026), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 19 Aug 2026; Packaged food and beverages: 13 Nov 2025; Consumer electronics and small appliances: 1 Jan 2025; Batteries, e-bikes and power banks: 1 Jan 2025), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 1 Jan 2025 (Home and kitchen goods: 1 Jan 2025; Cosmetics and personal care: 12 Jul 2024; Packaged food and beverages: 1 Apr 2026; Consumer electronics and small appliances: 3 Sep 2026; Batteries, e-bikes and power banks: 1 Sep 2026), and this doesn't mean it's allowed.
- Status
- No known rule
- Requirement, dates and source
We have no rule for it here. Our coverage starts 27 Mar 2026 (Home and kitchen goods: 27 Mar 2026; Cosmetics and personal care: 8 Oct 2026; Packaged food and beverages: 8 Oct 2026; Consumer electronics and small appliances: 24 Mar 2026; Batteries, e-bikes and power banks: 20 Aug 2026), and this doesn't mean it's allowed.
California
Prop 65 listing
California's list of chemicals known to cause cancer or reproductive harm.
- Listing
- Listed 1988-01-01 (cancer). Grace period: "Proposition 65 warning requirements do not apply until 12 months after the chemical has been listed" (Appendix A); listing date plus 12 months.
- Warning applies from
- 1 Jan 1989
- Requirement
- Warning required when exposure exceeds the threshold (NSRL (µg/day): 0.7)
- Warning wording
- This product can expose you to Propylthiouracil, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
- Chemical
- Propylthiouracil
- Type of toxicity
- cancer
- Listed by
- the State's Qualified Experts (SQE)
- CAS No.
- 51-52-5
- Date listed
- 1 Jan 1988
- NSRL or MADL (µg/day)
- 0.7
Prop 65 list row: Propylthiouracil · fetched 2026-10-08
California OEHHA: 27 CCR 27001(opens in a new tab)- Listing
- Listed 1990-07-01 (developmental). Grace period: "Proposition 65 warning requirements do not apply until 12 months after the chemical has been listed" (Appendix A); listing date plus 12 months.
- Warning applies from
- 1 Jul 1991
- Requirement
- Warning required when exposure exceeds the threshold (no MADL listed for this row)
- Warning wording
- This product can expose you to Propylthiouracil, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
- Chemical
- Propylthiouracil
- Type of toxicity
- developmental toxicity
- Listed by
- formally required to be labeled or identified (FR)
- CAS No.
- 51-52-5
- Date listed
- 1 Jul 1990
Prop 65 list row: Propylthiouracil · fetched 2026-10-08
California OEHHA: 27 CCR 27001(opens in a new tab)Groups
Group memberships
Groups that name this substance. Markets define groups like PFAS in different ways.
Not named in any group
No group we track names this substance. Groups like PFAS are defined by chemical structure and don't list members, so whether it's in one depends on your product.
Records
Recalls and alerts
Recalls, safety alerts and Prop 65 notices that name Propylthiouracil, with a link to the original. A Prop 65 notice is a claim by the sender, not a ruling.
No records in our feeds
No Prop 65 notice, EU Safety Gate alert or CPSC recall has named Propylthiouracil since January 2023. Other agencies may still have acted.
See also
Related
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Every rule for this kind of product, in each market.
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