- D4 (Octamethylcyclotetrasiloxane) D4

- D5 (Decamethylcyclopentasiloxane) D5

- D6 (Dodecamethylcyclohexasiloxane) D6

Kurambidzwa kweD4 uye D5 mune Yemunhu Kuchengeta Zvigadzirwa:

Octamethylcyclotetrasiloxane (D4uye decamethylcyclopentasiloxane (D5) akawedzerwa kuneSVITSA annex XVII inorambidzwa zvinhu zvinyorwa(kupinda 70) byCOMMISSION REGULATION (EU) 2018/35on10 Ndira 2018. D4 neD5 hazvichaiswe pamusika mune zvinowachiswa zvizorwa zvigadzirwa mumisumbu yakaenzana kana yakakura kudarika.0.1 %nehuremu hwechimwe chinhu, mushure31 Ndira 2020.

Sei D4 uye D5 Dzichirambidzwa?

D4 uye D5 ma cyclosiloxanes anonyanya kushandiswa semamonomers ekugadzirwa kwesilicone polymer. Vanewo kushandiswa kwakananga muzvigadzirwa zvekuchengetedza munhu. D4 yakaonekwa seainorambira, bioaccumulative uye muchetura (PBT) uye inoramba ichinyanya bioaccumulative (vPvB) chinhu. D5 yakaonekwa sechinhu chevPvB.

Nekuda kwekunetsekana kwekuti D4 neD5 inogona kunge iine mukana wekuunganidza mumhoteredzo uye kukonzera mhedzisiro isingatarisike uye isingadzokeki mukufamba kwenguva, ECHA's Risk Assessment (RAC) uye Socio Economic.Makomiti Ongororo (SEAC) akabvumirana nechikumbiro cheUK chekurambidza D4 neD5 muzvigadziro zvekugezesa zvemunhu muna Chikumi 2016 sezvo vangangopinda mudhamu nekupinda mumadhamu, nzizi nemakungwa.

Kurambidzwa Kushandiswa kweD4 uye D5 mune Zvimwe Zvigadzirwa?

Parizvino D4 neD5 hadzina kuganhurirwa mune zvimwe zvigadzirwa. ECHA iri kushanda pane imwe pfungwa yekurambidza D4 neD5 mukatisiya pazvinhu zvekuchengeta weganezvimwemutengi/zvigadzirwa zvehunyanzvi(semuenzaniso kuchenesa, wakisi uye polishes, kuwacha nekuchenesa zvigadzirwa). Chikumbiro chichaendeswa kuti chibvumirwe mukatiKubvumbi 2018. Indasitiri yakaratidza kuramba kwakasimba kune iyi ganhuriro yokuwedzera.

InKurume 2018, ECHA yakarongawo kuwedzera D4 neD5 kuSVHC runyorwa.

Reference:

• COMMISSION REGULATION (EU) 2018/35
• Komiti Yekuongorora Njodzi (RAC) Inobvumira Chikumbiro cheKurambidza D4 uye D5 Kushandiswa mu.
• Wash-off Cosmetics
• Chinangwa cheKurambidzwa kweD4 uye D5 mune Zvimwe Zvigadzirwa
• Slicones Europe - Zvimwe zvirambidzo zveREACH zveD4 neD5 hazvisati zvakwana uye hazvina kurongeka - Chikumi 2017

Chii chinonzi silicones?

Silicones zvigadzirwa zvemhando yepamusoro izvo zvinoshandiswa mumazana ezvishandiso uko kuita kwavo kwakakosha kunodiwa. Iwo anoshandiswa seanonamira, anoisa insulate, uye ane yakanakisa mechanical/optical/thermal resistance pakati pezvimwe zvinhu zvakawanda. Izvo zvinoshandiswa, semuenzaniso, mune zvekurapa tekinoroji, kuvandudzwa kwesimba uye simba rekuchengetedza mhinduro, pamwe nedhijitari tekinoroji, kuvaka uye kutakura.

Chii chinonzi D4, D5 neD6 uye dzinoshandiswa kupi?

Octamethylcyclotetrasiloxane (D4), Decamethylcyclopentasiloxane (D5) uye Dodecamethylcyclohexasiloxane (D6) inoshandiswa kugadzira zvakasiyana-siyana zvesilicone zvinhu zvinopa zvakasiyana-siyana, zvinobatsira maitiro kune zvakasiyana-siyana zvekushandiswa uye zvigadzirwa kumativi ose, kusanganisira kuvaka, magetsi, engineering, hutano hwehutano. , zvizoro uye kutarisira munhu.

D4, D5 uye D6 inonyanya kushandiswa semakemikari epakati, zvichireva kuti zvinhu zvinoshandiswa mukugadzira nzira asi zvinongowanikwa sezvisina kuchena zvakaderera muzvigadzirwa zvekupedzisira.

SVHC inorevei?

SVHC inomirira "Substance of Very High Concern".

Ndiani akaita sarudzo yeSVHC?

Sarudzo yekuzivisa D4, D5, D6 seSVHC yakaitwa neECHA Member States Committee (MSC), iyo inoumbwa nenyanzvi dzakadomwa neEU Member States neECHA.

Nhengo dzeMSC dzakakumbirwa kuti dzitarise zvinyorwa zvehunyanzvi zvakaunzwa neGermany zveD4 neD5, uye neECHA yeD6, pamwe chete nezvakatambirwa panguva yekubvunza veruzhinji.

Basa renyanzvi idzi nderekuongorora nekusimbisa hwaro hwesainzi hunotsigira zvikumbiro zveSVHC, uye kwete kuongorora zvinogona kuitika.

Sei D4, D5 neD6 dzakanyorwa seSVHC?

Zvichienderana nemaitiro anoshandiswa muREACH, D4 inosangana nezvinodiwa zvePersistent, Bioaccumulative and Toxic (PBT) zvinhu, uye D5 neD6 zvinosangana nezvinodiwa zvePersistent, zvakanyanya Bioaccumulative (vPvB) zvinhu.

Pamusoro pezvo, D5 neD6 zvinoonekwa sePBT kana zvine zvinopfuura 0.1% D4.

Izvi zvakakonzera kudomwa neEU Member States kune runyorwa rweSVHCs. Nekudaro, isu tinotenda maitiro haatenderi huwandu hwakazara hwehumbowo hwesainzi hunofanirwa kutariswa.