2023年12月14日 · D4 or D5 or D6 in a concentration equal to or less than 0.5 % w/w, for use as adhesion promoters. D6 in a concentration equal to or less than 1 % w/w, for professional use in the cleaning or restoration of art and antiques.

Octamethylcyclotetrasiloxane (D4), Decamethylcyclopentasiloxane (D5) Dodecamethylcyclo- hexasiloxane (D6) are cyclosiloxanes, and basic members of the silicone family, serving as the building blocks for many silicones.

2024年6月18日 · This amendment addresses octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6). D4, D5, and D6 are volatile cyclic methylsiloxane compounds (cVMS) with four, five, and six …

2024年5月17日 · On 13 June 2018, D4, D5 and dodecamethylcyclohexasiloxane (‘D6’) were identified by the Member State Committee (‘MSC’) of the European Chemicals Agency (‘the Agency’) as substances of very high concern (‘SVHC’) with very persistent and very bioaccumulative (‘vPvB’) properties.

The cyclosiloxanes D4, D5 and D6 are silicone-based compounds. Cyclosiloxanes contain repeating units of silicone (Si) and oxygen (O) atoms in a closed loop, giving it a “cyclic” structure. Each silicone atom has two methyl groups (CH3) attached to it. D4, D5 and D6 are volatile, which means they are released into the air during their use.

Cyclosiloxanes are a class of silicone material. They are volatile and often used as a solvent. The three main commercial varies are octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5) and dodecamethylcyclohexasiloxane (D6). They evaporate and degrade in air under sunlight. [1]

5 天之前 · Cyclosiloxanes, including D4, D5, and D6, are a class of organosilicon compounds with unique chemical structures. Widely used across multiple industries, they have also drawn significant attention due to their potential environmental and health risks. This article provides a comprehensive overview of the EU’s recent regulatory developments targeting these substances.

2024年5月20日 · Finally, last week was published the Commission Regulation (EU) 2024/1328, introducing further restrictions on the use of Octamethylcyclotetrasiloxane (D4), Decamethylcyclopentasiloxane (D5), Dodecamethylcyclohexasiloxane (D6) and cyclopentasiloxane. This was announced in the summer of 2023.

Due to D4, D5, and D6 being substances of high concern (SVHC), they exhibit high persistence and bioaccumulation (vPvB). D4 is also recognized as persistent, bioaccumulative, and toxic (PBT), and when D5 and D6 contain 0.1% or more of D4, they are also recognized as possessing PBT characteristics.

Explore Biorius' comprehensive guide on the updated D4, D5, and D6 restrictions in cosmetics, detailing regulatory changes, compliance requirements, and industry impacts.