Siloxanes

EU Commission Confirms Siltac Is a Plant Protection Product Requiring Authorisation Under Regulation 1107/2009

The European Commission confirmed in March 2026 that products acting via physical mechanisms, such as Siltac, are classified as Plant Protection Products (PPPs) under Regulation (EC) No 1107/2009. Manufacturers must now secure full PPP authorizations for continued market access, ending the use of non-PPP regulatory pathways for siloxane-based insect control.

31 Mar 2026, 21:29europarl.europa.euEuropean Union

EU CLH Intention Announced for 1,1,3,3-Tetramethyldisiloxane

Belgium has notified ECHA of its intention to propose harmonised classification for 1,1,3,3-tetramethyldisiloxane, with a dossier submission expected by June 2027. Proposed classifications for reproductive toxicity and skin/eye irritation signal future tightening of labeling, packaging, and downstream REACH restrictions for this siloxane.

30 Mar 2026, 12:18echa.europa.euEuropean Union

Japan CAA Updates Annex 1–21 Monomer Reference For Food-Contact Positive List

Japan’s Consumer Affairs Agency (CAA) updated the Annex 1–21 monomer reference list for food-contact materials on March 26, 2026. Manufacturers should audit internal substance databases against this revised reference file to ensure accurate compliance reporting and alignment with the positive list for polymer base materials.

28 Mar 2026, 09:36caa.go.jpJapan

US EPA Finalises Tolerance Exemption for Dimethylpolysiloxane (CAS 63148-62-9) in Pesticide Formulations

The US EPA has expanded the tolerance exemption for dimethylpolysiloxane (CAS 63148-62-9) by lowering the minimum molecular weight threshold for its use as an inert ingredient in pesticide formulations. This regulatory easing provides greater formulation flexibility for manufacturers while streamlining compliance for residues on food and feed commodities.

26 Mar 2026, 19:33federalregister.govUnited States

Vietnam Recalls 291 Cosmetic Products Containing Cyclotetrasiloxane (D4 / Octamethylcyclotetrasiloxane)

Vietnam has ordered the immediate recall and market suspension of 291 cosmetic products containing Cyclotetrasiloxane (D4). This enforcement action aligns Vietnam with ASEAN-wide restrictions on siloxanes, signaling stricter regional compliance oversight for personal care formulations.

18 Mar 2026, 17:47dav.gov.vnVietnam

Denmark: Consumer Council Tænk Identifies Suspected Endocrine Disruptors in EU Lip Balms

A March 2026 report by Danish consumer group Tænk and CHEM Trust identified suspected endocrine disruptors and allergens in 25% of tested lip balms across the EU market. This high-profile scrutiny signals increasing pressure for stricter EU-wide restrictions on specific UV filters, siloxanes, and mineral oils in leave-on cosmetic products.

12 Mar 2026, 13:51taenk.dkEuropean UnionDenmark

Great Britain: Environment Agency Plans Enforcement Campaign on D4 and D5 in Wash-Off Cosmetics

The UK Environment Agency is launching a targeted enforcement campaign to identify and remove wash-off cosmetics containing restricted siloxanes (D4 and D5) from the market. Manufacturers and retailers should immediately audit formulations and supply chain controls to mitigate the risk of product withdrawals and regulatory action, particularly for items sold via e-commerce platforms.

11 Mar 2026, 16:21ctpa.org.ukUnited Kingdom

ECHA PBT Expert Group Assesses Long-Range Transport Potential of cVMS (D4, D5, D6)

ECHA’s PBT Expert Group has concluded that siloxanes D4, D5, and D6 exhibit long-range transport and deposition potential comparable to Persistent Organic Pollutants (POPs). This scientific consensus solidifies the basis for upcoming June 2026 REACH restrictions and signals a high probability of future global regulatory action under the Stockholm Convention.

10 Mar 2026, 06:08echa.europa.euEuropean Union

Switzerland Consults on Amendments to the PIC Ordinance (ChemPICV)

Switzerland is consulting on a major expansion of the PIC Ordinance (ChemPICV) to include a broad range of restricted chemicals and pesticides, with comments due by April 11, 2026. Companies exporting industrial chemicals, PFAS, or biocides from Switzerland must prepare for expanded Prior Informed Consent (PIC) notification requirements starting December 2026.

27 Feb 2026, 16:07fedlex.admin.chSwitzerland

Netherlands Supreme Court Confirms GN 3808 Classification of Dimeticon Lice Lotion

The Netherlands Supreme Court has confirmed that dimeticon-based head-lice treatments must be classified as insecticides (GN 3808) rather than hair-care preparations (GN 3305). This ruling increases customs duty from 0% to 6% for these products, signaling stricter tariff enforcement for "physical action" pest controls marketed as cosmetics.

17 Feb 2026, 13:58uitspraken.rechtspraak.nlNetherlands

China NMPA Incorporates 27 Standards and Test Methods Into STSC (2015 Edition)

China's NMPA has updated the Safety and Technical Standards for Cosmetics (STSC) with 27 new or revised standards and test methods, effective in phases starting July 2026. Manufacturers must prepare for stricter microbial limits, new ingredient restrictions (including PFAS and siloxanes), and updated safety testing protocols to maintain market access.

12 Feb 2026, 15:08nmpa.gov.cnChina

Canada Issues Ministerial Condition No. 22407 For Siloxane/Silicone Substance (CAS 3086114-77-1) Under CEPA

Canada has implemented Ministerial Condition No. 22407, imposing strict controls on the manufacture and import of a specific siloxane substance (CAS 3086114-77-1) effective January 2026. Companies must establish robust tracking and notification protocols for supply chain transfers and environmental releases to maintain market access for this substance.

11 Feb 2026, 16:07gazette.gc.caCanada

US FDA Seeks Comments on Proposed Class II Device Exemptions From 510(k) Premarket Notification

The US FDA has proposed exempting a list of Class II medical devices from 510(k) premarket notification requirements, with a comment period closing April 7, 2026. This move aims to streamline market entry for low-to-moderate risk devices, though manufacturers must still comply with specific technical limitations and general quality controls.

11 Feb 2026, 12:24govinfo.govUnited States

MERCOSUR Adopts Technical Regulation on Silicones in Food-Contact Materials (GMC Resolution No. 34/2025)

MERCOSUR has adopted Resolution No. 34/2025, establishing new technical requirements and positive lists for silicones in food-contact materials, effective mid-2026. Manufacturers must review silicone formulations and supply chains to ensure compliance with updated safety standards across Argentina, Brazil, Paraguay, and Uruguay.

23 Jan 2026, 13:42normas.mercosur.intArgentinaBrazilParaguayUruguay

Norway and Sweden Submit CLH Proposal for Dimethylsilanediol

Norway and Sweden have formally proposed a harmonised EU classification for dimethylsilanediol as a reproductive toxicant and a PMT/vPvM substance. If adopted, this will mandate updated hazard communication and likely trigger downstream restrictions for siloxane-related materials in consumer and industrial applications.

15 Jan 2026, 09:18echa.europa.euEuropean Union

Australia (AICIS) Updates CAS Names For 89 AIIC Chemicals

Australia’s AICIS has corrected 89 chemical names on the national inventory to align with international CAS nomenclature standards. While chemical identities remain unchanged, companies should update internal records and labels to ensure administrative alignment with the official registry.

22 Dec 2025, 15:12industrialchemicals.gov.auAustralia

Consumer Test Finds Harmful Chemicals in Popular Hair Oils

A Danish consumer council study has identified widespread use of persistent siloxanes and suspected endocrine-disrupting fragrances in hair oils, ahead of strict EU concentration limits taking effect in June 2027. Manufacturers must prioritize the reformulation of leave-on cosmetics to eliminate SVHC-listed siloxanes and address potential greenwashing risks regarding ingredient purity claims.

1 Dec 2025, 13:27taenk.dkEuropean Union

EPA Finalises Significant New Use Rules for 35 Chemicals

The US EPA has finalized Significant New Use Rules (SNURs) for 35 chemical substances under TSCA, effective January 5, 2026. Businesses must submit a notification 90 days before any significant change in use, including modifications to workplace protections, hazard communication, or product concentrations.

5 Nov 2025, 13:08federalregister.govUnited States

EPA Proposes Significant New Use Rules for Multiple Chemical Substances

EPA proposes Significant New Use Rules for multiple chemicals, requiring 90-day pre-notification for new industrial applications by December 2025. This move extends risk management obligations to all manufacturers and processors, necessitating a review of substance uses in electronics, batteries, and flame retardants to avoid enforcement action.

4 Nov 2025, 10:47govinfo.govUnited States

US EPA Opens SACC Peer Review Process for Octamethylcyclotetrasiloxane (D4)

The US EPA has launched the scientific peer review of its draft risk evaluation for D4, a pivotal step toward potential federal restrictions under TSCA. This process will determine the final risk profile, likely signaling future bans or usage limits for D4 in personal care and industrial sectors.

10 Oct 2025, 15:01regulations.govUnited States