- D4 (OctamethylkyClotetrasiloxane) D4

- D5 (decomethylcyclopentasiloxane) D5

- D6 (dodecamethylcyclohexasiloxane) d6

Imikhawulo ye-D4 ne-D5 emikhiqizweni yokunakekelwa komuntu siqu:

I-OctamethylcyClotetrasiloxane (D4) ne-decomethylcyclopentasiloxane (D5) yengezwe ku-Finyelela uWex XVII okhawulelwe uhlu lwezinto(Ukungena 70) ngoUkulawulwa Kwekhomishini (EU) 2018/35phezu kwa-10 Jan 2018. I-D4 ne-D5 ngeke ibekwe emakethe emikhiqizweni yokugeza izimonyo kufinyelela okulingana noma okukhulu kune-0.1%ngesisindo sento ethile, ngemuva31 Januwari 20 2020.

Kungani i-D4 no-D5 bevinjelwe?

I-D4 no-D5 yi-cyclosiloxanes ikakhulukazi esetshenziswa njenge-monomers yokukhiqizwa kwe-silicone polymer. Baphinde basebenzise ngqo emikhiqizweni yokunakekelwa komuntu siqu. I-D4 ikhonjwe njengeUkuphikelela, i-bioaccumulative kanye ne-anobuthi (i-PBT) kanye ne-bioaccumulative ephikelelayo kakhulu ye-bioaccumulative (VPVBB). I-D5 ikhonjwe njengento ye-VPVV.

Ngenxa yokukhathazeka ngokuthi i-D4 no-D5 ingahle ibe namandla okuqongelela emvelweni futhi ibangele imiphumela engahlelekile futhi engaphenduki ekuhlolweni kwengozi yesikhathi eside, i-ECHA) kanye nomnotho wezenhlaloAmakomidi wokuhlola (olwandle) avunyelekele ngesiphakamiso se-UK ukukhawulela i-D4 ne-D5 emikhiqizweni yokunakekelwa komuntu siqu ngoJuni 2016 ngoba zingahle zehle ukukhishwa bese zingena amachibi, imifula kanye nolwandle.

Ukusetshenziswa okuvinjelwe kwe-D4 ne-D5 kweminye imikhiqizo?

Kuze kube manje d4 no-D5 akukhawulelwe kweminye imikhiqizo. I-ECHA isebenza ngesiphakamiso esingeziwe sokukhawulela i-D4 ne-D5 inshiya emikhiqizweni yokunakekelwa komuntu siqunezinyeUmthengi / Professional Products(isib. Ukuhlanza owomile, ama-waxes kanye nama-expression, ukugeza nokuhlanza imikhiqizo). Isiphakamiso sizothunyelwa ukuze sivunyelwe ngaphakathiEphreli 2018. Imboni iveze ukuphikisana okuqinile kulo mkhawulo owengeziwe.

Phakathi kwa-Mashi 2018, I-ECHA ibuye yahlongoza ukwengeza i-D4 no-D5 kuhlu lwe-SVHC.

Isethenjwa:

• Ukulawulwa Kwekhomishini (EU) 2018/35
• IKomidi Lokuhlola Ubungozi (RAC) livumela isiphakamiso sokukhawulela i-D4 ne-D5 ukusetshenziswa ku
• Izimonyo zokugeza
• Izinhloso zokuvikelwa kwe-D4 ne-D5 kweminye imikhiqizo
• Ama-Slicones Europe - Imikhawulo eyengeziwe yokufinyelela ku-D4 ne-D5 ngaphambi kwesikhathi nokungabi nakubi - ngoJuni 2017

Yini ama-silicones?

Ama-Silicones ayimikhiqizo ekhethekile esetshenziswa kumakhulu ezicelo lapho ukusebenza kwawo okukhethekile kudingeka khona. Zisetshenziswa njengezinamathela, zingena, futhi zinokumelana okuhle kakhulu / okubonakalayo / okushisayo phakathi kwezinye izakhiwo eziningi. Zisetshenziswa, ngokwesibonelo, kubuchwepheshe bezokwelapha, izixazululo zokonga amandla avuselelekayo kanye nezixazululo zokonga amandla, kanye nobuchwepheshe bedijithali, ukwakhiwa nokuhamba.

Yini i-D4, D5 ne-D6 futhi basetshenziswa kuphi?

I-OctamethylcyClotetrasiloxane (D4), Decomethylcyclopentasiloxane (D5) noDodecamethylcyclohexasiloxane (D6) isetshenziselwa ukwakha izici ezahlukahlukene ze-silicone ezinikezela ngezinto ezahlukahlukene, kufaka phakathi ukwakhiwa, izimonyo, ubunjiniyela, ukunakekelwa kwezempilo, izimonyo kanye nokunakekelwa komuntu siqu.

D4, D5 ne-D6 kuvame ukusetshenziswa kakhulu njengabephakathi amakhemikhali, okusho ukuthi izinto ziqashwa kwinqubo yokukhiqiza kepha zikhona kuphela njengokungcola okuphansi kwemikhiqizo.

Kusho ukuthini i-SVHC?

I-SVHC imele "into ebaluleke kakhulu".

Ngubani owenze isinqumo seSVHC?

Isinqumo sokukhomba i-D4, D5, D6 njengoba i-SVHC yenziwa yiKomidi Lase-ECHA HURTE (MSC), elihlanganiswe ochwepheshe abaqokwe yi-ECAMEL WAMELY NE-ECHA.

Amalungu e-MSC acelwa ukuthi abukeze ama-dossiers wezobuchwepheshe athunyelwe yiJalimane nge-D4 no-D5, kanye ne-ECHA ye-D6, kanye namazwana atholwe ngesikhathi sokubonisana nomphakathi.

Igunya lalaba bachwepheshe lizohlola futhi liqinisekise isisekelo sesayensi esisekela iziphakamiso ze-SVHC, futhi hhayi ukuhlola umthelela ongaba khona.

Kungani kwakungu-D4, D5 no-D6 abalwe njenge-SVHC?

Ngokusekelwe kwinqubo esetshenziselwa ukufinyelela, i-D4 ihlangabezana nezindlela zokuphikelela, ze-bioaccumulative kanye ne-accoac (pbt) izinto, kanye ne-D5 ne-D6 kuhlangabezana nezindlela zokuphikelela kakhulu, kakhulu kakhulu (VPVVB).

Ngaphezu kwalokho, i-D5 ne-D6 ibhekwa njenge-PBT lapho bequkatha ngaphezulu kwe-0.1% D4.

Lokhu kuholele ekuphakanyisweni kwamazwe amalungu e-EU ohlwini lwama-SVHC. Kodwa-ke, sikholwa ukuthi inqubo ayivumeli uhla oluphelele lobufakazi obufanele besayensi obufanele.