- D4 (Octamethylcyclotetrasiloxane) D4

- D5 (Decamethylcyclopentasiloxane) D5

- D6 (Dodecamethylcyclohexasiloxane) D6

Thibelo ea D4 le D5 ho Lihlahisoa tsa Tlhokomelo ea Motho:

Octamethylcyclotetrasiloxane (D4le decamethylcyclopentasiloxane (D5) li kenyellelitsoe hoFIHLELA lethathamo la lintho tse thibetsoeng tse kenyelletsoeng XVII(keno 70) kaMOLAO OA KOMISI (EU) 2018/35hoLa 10 Pherekhong 2018.D4 le D5 li ke ke tsa beoa 'marakeng ka lihlahisoa tsa litlolo tse hlatsuoang ka bongata bo lekanang kapa bo boholo ho feta.0.1%ka boima ba ntho efe kapa efe, kamora31 Pherekhong 2020.

Hobaneng ha D4 le D5 li thibetsoe?

D4 le D5 ke li-cyclosiloxanes tse sebelisoang haholo e le li-monomers bakeng sa tlhahiso ea silicone polymer.Ba boetse ba na le tšebeliso e tobileng lihlahisoa tsa tlhokomelo ea botho.D4 e khethiloe e le ae phehellang, ea bioaccumulative le chefo (PBT) le ntho e phehellang haholo ea bioaccumulative (vPvB).D5 e khethiloe e le ntho ea vPvB.

Ka lebaka la matšoenyeho a hore D4 le D5 li ka ba le monyetla oa ho bokella tikolohong le ho baka litlamorao tse sa lebelloang le tse ke keng tsa khutlisoa nakong e telele, Tlhahlobo ea Kotsi ea ECHA (RAC) le Socio Economic.Likomiti tsa Tlhahlobo (SEAC) li lumellane le tlhahiso ea UK ea ho thibela D4 le D5 lihlahisoa tsa tlhokomelo ea botho tse hlatsuoang ka Phuptjane 2016 kaha li ka theohela ka har'a metsi 'me tsa kena matšeng, linōkeng le maoatleng.

Tšebeliso e thibetsoeng ea D4 le D5 ho lihlahisoa tse ling?

Ho fihlela hajoale D4 le D5 ha lia thibeloa lihlahisoa tse ling.ECHA e sebetsa ka tlhahiso e eketsehileng ea ho thibela D4 le D5 ho kenatlohela lihlahisoa tsa tlhokomelo ea bothole tse dingbareki/ dihlahiswa tsa ditsebi(mohlala, ho hloekisa ka mokhoa o omileng, boka ba boka le lipoleshe, ho hlatsoa le ho hloekisa lihlahisoa).Tlhahiso e tla romelloa bakeng sa tumello hoMmesa 2018.Indasteri e hlahisitse khanyetso e matla ea thibelo ena e eketsehileng.

HoHlakubele 2018, ECHA e boetse e sisintse ho kenya D4 le D5 lethathamong la SVHC.

Tlhahiso:

• MOLAO OA KOMISI (EU) 2018/35
• Komiti ea Tlhahlobo ea Likotsi (RAC) e Amohela Tlhahiso ea ho Thibela Tšebeliso ea D4 le D5 ho
• Litlolo tsa ho hlatsoa
• Maikemisetso a Thibelo ea D4 le D5 ho Lihlahisoa tse ling
• Slicones Europe - Lithibelo tse ling tsa REACH bakeng sa D4 le D5 ke tsa pele ho nako ebile ha li na toka - Phuptjane 2017

Li-silicone ke eng?

Li-silicones ke lihlahisoa tse ikhethang tse sebelisoang lits'ebetsong tse makholo moo ts'ebetso ea tsona e khethehileng e hlokahalang.Li sebelisoa e le li-adhesives, li kenya insulate, 'me li na le khanyetso e ntle ea mochini / optical / mocheso har'a thepa e meng e mengata.Li sebelisoa, ka mohlala, ho theknoloji ea bongaka, matla a tsosolositsoeng le tharollo ea ho boloka matla, hammoho le theknoloji ea digital, kaho le lipalangoang.

D4, D5 le D6 ke eng mme di sebediswa kae?

Octamethylcyclotetrasiloxane (D4), Decamethylcyclopentasiloxane (D5) le Dodecamethylcyclohexasiloxane (D6) li sebelisetsoa ho etsa lisebelisoa tse sa tšoaneng tsa silicone tse fanang ka litšobotsi tse ikhethang, tse molemo ho mefuta e mengata ea likopo le lihlahisoa ho pholletsa le likarolo, ho akarelletsa le kaho, lisebelisoa tsa elektronike, boenjiniere, tlhokomelo ea bophelo bo botle. , litlolo le tlhokomelo ea botho.

D4, D5 le D6 li sebelisoa hangata joalo ka li-intermediate tsa lik'hemik'hale, ho bolelang hore lintho li sebelisoa ts'ebetsong ea tlhahiso empa li fumaneha feela e le litšila tse tlase lihlahisoa tsa ho qetela.

SVHC e bolela'ng?

SVHC e emetse "Selo se Matshwenyeho a Phahameng haholo".

Ke mang ea entseng qeto ea SVHC?

Qeto ea ho khetholla D4, D5, D6 e le SVHC e entsoe ke Komiti ea Linaha tsa Litho tsa ECHA (MSC), e entsoeng ka litsebi tse khethiloeng ke Linaha tsa Litho tsa EU le ECHA.

Litho tsa MSC li ile tsa kōptjoa ho hlahloba litokomane tsa tekheniki tse rometsoeng ke Jeremane bakeng sa D4 le D5, le ke ECHA bakeng sa D6, hammoho le maikutlo a amohetsoeng nakong ea lipuisano tsa sechaba.

Taelo ya ditsebi tsena ke ho hlahloba le ho netefatsa motheo wa saense o tsheheditseng ditshisinyo tsa SVHC, mme e seng ho lekola kgahlamelo e ka bang teng.

Hobaneng ha D4, D5 le D6 li thathamisitsoe e le SVHC?

Ho ipapisitsoe le mekhoa e sebelisitsoeng ho REACH, D4 e kopana le litekanyetso tsa Persistent, Bioaccumulative and Toxic (PBT) substances, 'me D5 le D6 li finyella litekanyetso tsa lintho tse Persistent, very Bioaccumulative (vPvB).

Ho phaella moo, D5 le D6 li nkoa e le PBT ha li na le ho feta 0.1% D4.

Sena se ile sa lebisa ho khethoe ke Linaha tseo e leng Litho tsa EU lenaneng la li-SVHC.Leha ho le joalo, re lumela hore litekanyetso ha li lumelle hore ho nahanoe ka botlalo ba bopaki ba saense bo amehang.