- D4 (Octamethylcyclotetrasiloxane) D4

- D5 (Decamethylcyclopentasiloxane) D5

- D6 (Dodecamethylcyclohexasiloxane) D6

Ka palena o D4 a me D5 i nā huahana mālama pilikino:

Octamethylcyclotetrasiloxane (D4) a me ka decamethylcyclopentasiloxane (D5) ua hoʻohui ʻia iREACH annex XVII papa inoa mea i kaupalena 'ia(komo 70) naHOOLAHA KOMISINA (EU) 2018/35ma10 Ian 2018. ʻAʻole e kau ʻia ʻo D4 a me D5 ma ka mākeke i nā huahana hoʻomaʻemaʻe holoi holoi ma kahi ʻano like a ʻoi aku paha.0.1 %ma ke kaumaha o kela mea keia mea, mahope31 Ianuali 2020.

No ke aha i kaupalena ʻia ai ka D4 a me D5?

ʻO D4 a me D5 nā cyclosiloxanes i hoʻohana nui ʻia e like me nā monomers no ka hana polymer silicone. Hoʻohana pololei lākou i nā huahana mālama pilikino. Ua ʻike ʻia ʻo D4 he ahoʻomau, bioaccumulative a me nā meaʻawaʻawa (PBT) a me ka hoʻomau mau loa i ka bioaccumulative (vPvB) mea. Ua ʻike ʻia ʻo D5 he mea vPvB.

Ma muli o nā hopohopo e loaʻa paha iā D4 a me D5 ka hiki ke hōʻiliʻili i loko o ke kaiapuni a hoʻoulu i nā hopena i hiki ʻole ke ʻike ʻia a hiki ʻole ke hoʻololi ʻia i ka wā lōʻihi, ECHA's Risk Assessment (RAC) a me Socio Economic.Ua ʻae nā Kōmike Assessment (SEAC) i ka manaʻo o UK e hoʻopaʻa i ka D4 a me D5 i ka holoi ʻana i nā huahana mālama pilikino i Iune 2016 no ka mea hiki iā lākou ke iho i lalo o ka wai a komo i nā loko, nā muliwai, a me nā moana.

Kāohi ʻia ka hoʻohana ʻana o D4 a me D5 i nā huahana ʻē aʻe?

ʻAʻole i kaupalena ʻia ʻo D4 a me D5 i nā huahana ʻē aʻe. Ke hana nei ʻo ECHA i kahi noi hou e hoʻopaʻa i ka D4 a me D5 i lokowaiho i nā huahana mālama pilikinoa me nā mea ʻē aʻehuahana mea kūʻai/ʻoihana(e laʻa me ka hoʻomaʻemaʻe maloʻo, nā wax a me nā poli, nā mea holoi holoi a hoʻomaʻemaʻe). E waiho ʻia ka manaʻo no ka ʻae ʻia maʻApelila 2018. Ua hōʻike ka ʻoihana i nā kūʻē ikaika i kēia kaohi hou.

InMalaki 2018, Ua manaʻo pū ʻo ECHA e hoʻohui i ka D4 a me D5 i ka papa inoa SVHC.

Kuhikuhi:

• HOOLAHA KOMISINA (EU) 2018/35
• Ua ʻae ke Kōmike no ka Hoʻoholo Hoʻopilikia (RAC) i ka manaʻo e kaupalena i ka hoʻohana ʻana o D4 a me D5 ma
• Mea hoʻomaʻemaʻe holoi holoi
• Nā Manaʻo o ka Kaohi ʻana o D4 a me D5 i nā huahana ʻē aʻe
• Slicones Europe - ʻO nā palena REACH hou aʻe no D4 a me D5 ʻaʻole i kūpono ʻole - Iune 2017

He aha nā silicones?

ʻO nā Silicones nā huahana kūikawā i hoʻohana ʻia i nā haneli o nā noi kahi e pono ai kā lākou hana kūikawā. Hoʻohana ʻia lākou e like me nā adhesives, insulate, a loaʻa iā lākou ke kūpaʻa mechanical/optical/thermal maikaʻi ma waena o nā waiwai ʻē aʻe. Hoʻohana ʻia lākou, no ka laʻana, i nā ʻenehana lapaʻau, ka ikehu hou a me ka hoʻōla ʻana i ka ikehu, a me nā ʻenehana kikohoʻe, ke kūkulu ʻana a me ka halihali.

He aha nā D4, D5 a me D6 a ma hea e hoʻohana ʻia ai?

Hoʻohana ʻia ʻo Octamethylcyclotetrasiloxane (D4), Decamethylcyclopentasiloxane (D5) a me Dodecamethylcyclohexasiloxane (D6) e hana i kahi ʻano like ʻole o nā mea silicone e hāʻawi i nā hiʻohiʻona kūʻokoʻa, pono i nā ʻano like ʻole o nā noi a me nā huahana ma nā ʻāpana āpau, me ke kūkulu ʻana, nā mea uila, ʻenehana, mālama olakino. , nā mea hoʻonaninani a me ka mālama pilikino.

Hoʻohana pinepine ʻia ʻo D4, D5 a me D6 ma ke ʻano he waena kemika, ʻo ia hoʻi, hoʻohana ʻia nā mea i loko o ke kaʻina hana akā aia wale nō ma ke ʻano he haumia haʻahaʻa i nā huahana hope.

He aha ka manaʻo o SVHC?

Kū ʻo SVHC no ka "Substance of Very High Concern".

Na wai i hoʻoholo i ka SVHC?

ʻO ka hoʻoholo no ka hoʻomaopopo ʻana iā D4, D5, D6 ma ke ʻano he SVHC i hana ʻia e ka ECHA Member States Committee (MSC), kahi i haku ʻia e nā loea i koho ʻia e EU Member States a me ECHA.

Ua noi ʻia nā lālā MSC e nānā i nā palapala ʻenehana i waiho ʻia e Kelemania no D4 a me D5, a e ECHA no D6, a me nā ʻōlelo i loaʻa i ka wā o ke kūkākūkā lehulehu.

ʻO ke kauoha a kēia poʻe loea e loiloi a hōʻoia i ke kumu ʻepekema e kākoʻo ana i nā manaʻo SVHC, ʻaʻole e loiloi i ka hopena e hiki mai ana.

No ke aha i helu ʻia ai ʻo D4, D5 a me D6 ma ke ʻano he SVHC?

Ma muli o nā pae hoʻohālike i hoʻohana ʻia ma REACH, ua hoʻokō ʻo D4 i nā koina no nā mea Persistent, Bioaccumulative and Toxic (PBT), a ʻo D5 a me D6 e hoʻokō i nā koina no nā mea Persistent, very Bioaccumulative (vPvB).

Eia hou, ua manaʻo ʻia ʻo D5 a me D6 he PBT ke loaʻa iā lākou ma mua o 0.1% D4.

Ua alakaʻi ʻia kēia i kahi koho ʻia e nā lālā lālā o EU i ka papa inoa o nā SVHC. Eia naʻe, ke manaʻoʻiʻo nei mākou ʻaʻole ʻae nā pae hoʻohālikelike e noʻonoʻo ʻia ka nui o nā hōʻike ʻepekema kūpono.