- D4 (Octamethylcycyclotrasilonane) D4

- D5 (Balamethyyyyyycyclopentasioxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxane) D5

- D6 (Dodeciamethylcycccluloxoxoxane) D6

Mmachi nke D4 na D5 na ngwaahịa nlekọta onwe gị:

Octamethylcycyclotetrane (D4) na decamethyylcyclopentanetentane (D5) A tinyegoroRute ndepụta Annex XVII Amachibidoro(ntinye 70) site naIwu nhazi (EU) 2018/35inwu10 Jan 2018. D4 na D5 agaghị etinye n'ahịa na-asacha ngwaahịa ịchọ mma na-acha uhie uhie na ntinye aka ma ọ bụ karịa0.1%site na ibu nke ihe, mgbe31 Jenụwarị 2020.

Kedu ihe kpatara D4 na D5 amachibidoro?

D4 na D5 bụ Cyclosilopcanes na-ejikarị modemone maka mmepụta polymer. Ha nwekwara iji ya na ngwaahịa nlekọta onwe ya. Achọpụtara D4 dị ka ana-adịgide adịgide, bioacculitive na toxic (PBT) na nke na-adịgide adịgide biocmulative (VPVB). Achọpụtala D5 dị ka ihe VPVB.

N'ihi nchegbu ahụ D4 na D5 nwere ike ịnwe na gburugburu na gburugburu ya ma na-akpata enweghị atụ na nyocha nke ogologo oge, na-akwụ ụgwọ ihe egwu (agbụrụ) na mmekọrịta akụ na ụbaNtụle (CARCEC) kwenyere na ntinye aka UK kwenyere na D4 na D5 na-asacha ngwaahịa nlekọta onwe ya na June 2016 kemgbe ha ga-agbada na mmiri, osimiri, na oke osimiri.

Ojiji eji D4 na D5 na ngwaahịa ndị ọzọ?

Yabụ Far D4 na D5 anaghị amachibido na ngwaahịa ndị ọzọ. ECA na-arụ ọrụ na atụmatụ ndị ọzọ iji gbochie D4 na D5 naHapụ Ngwaahịa Nlekọta nkeonwena ndi ozoNgwaahịa / ọkachamara(eg nhicha, waxes na polishes, ịsa na ngwaahịa nhicha). A ga-edowe atụmatụ a maka nnabataEprel 2018. Industrylọ ọrụ egosila ihe ndị siri ike na mmachi a.

N'imeMachị 2018, ECA tụpụtakwara itinye D4 na D5 na ndepụta SVHC.

Kwuru:

• Iwu nhazi (EU) 2018/35
• Kọmitii maka nyocha ihe egwu (agbụrụ) kwadoro atụmatụ iji gbochie D4 na D5 na
• Na-asacha ihe ịchọ mma
• Ebumnuche nke mmachi nke D4 na D5 na ngwaahịa ndị ọzọ
• Slocones Europe - ọzọ rute mmachi maka D4 na D5 bụ nke a na-akaghị aka ma na-ezighi ezi - June 2017

Kedu silicones?

Silicones bụ ngwaahịa pụrụ iche nke ejiri na narị otu narị n'ime ọrụ dị mkpa. A na-eji ha dị ka adhesives, ha na-ekpuchi, ha nwekwara ezigbo arụ ọrụ / anya na-eguzogide n'etiti ọtụtụ ihe ndị ọzọ. A na-eji ha eme ihe, dịka ọmụmaatụ na teknụzụ Medicallụ, ike na-agbanwe agbanwe na nchekwa na-agbanwe agbanwe, yana ụdị dijitalụ, owuwu na ụgbọ njem.

Gịnị bụ D4, D5 na D6 na ebe ha ji?

A na-eji Octamethylcyclotetrasilonane (D4), Desmethylylycyclopentanentane (D5) na Dodecametyylccccyylccluonoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxocoxane (d5) na ngwa ọrụ bara ụba nke sistemụ, gụnyere iwu, igwe nri, nlekọta ahụike na nlekọta onwe onye.

D4, D5 na D6 a na-ejikarị ihe ndị na - eme ihe n'eziokwu, nke pụtara na a na - arụ ọrụ na usoro nrụpụta mana naanị ugbu a dị ka adịghị ọcha na ngwaahịa.

Kedu ihe SVHC pụtara?

SVHC na-anọchi anya maka "ihe nke oke nchegbu".

Nye mere mkpebi SVHC?

Mkpebi ị ga-amata D4, D5, D6 ka Kọmitii ECA SITHA mere Kọmitii Nọọsụ (MSC), nke mejupụtara ndị ọkachamara na-ahazi na ECA.

A gwara ndị otu MSC ka ha nyochaa akwụkwọ nka na Germany maka D4 na D5, na site na ese maka D6, yana nkwupụta ndị a na-enweta n'oge nyocha ọha.

Iwu nke ndị ọkachamara a bụ iji chọpụta ma gosi na sayensị na-emebi ihe SVHC na-atụ aro, ọ bụghị ịtụle mmetụta ọ bụla.

Kedu ihe kpatara D4, D5 na D6 depụtara dị ka SVHC?

Dabere na njirisi eji aga, D4 na-ezute njirisi nke na-adịgide adịgide, bioacculitive na toxic (PAST) nke na-adịgide adịgide (VPVB).

Na mgbakwunye, D5 na D6 na-atụle PBT mgbe ha nwere ihe karịrị 0.1% d4.

Nke a dugara na nhọpụta nke EU otu na-ekwu na ndepụta SVHCS. Agbanyeghị, anyị kwenyere na njirisi ekweghị ka a tụlee ihe akaebe sayensị dị mkpa.