I-Dimethyl azelate(CAS#1732-10-1)
| Incazelo Yokuphepha | S23 – Ungawuphefumuli umhwamuko. I-S24/25 - Gwema ukuthintana nesikhumba namehlo. |
| I-WGK Germany | 1 |
| I-TSCA | Yebo |
| Ikhodi ye-HS | 29171310 |
Isingeniso
I-Dimethyl azelaic acid (eyaziwa nangokuthi i-Dioctyl adipate, i-DOA) iyinhlanganisela evamile yezinto eziphilayo. Okulandelayo yisingeniso semvelo yayo, ukusetshenziswa, izindlela zokukhiqiza kanye nolwazi lokuphepha:
Ikhwalithi:
- Ukubukeka: Uketshezi olungenambala ukuya kokuphuzi
- Ukunyibilika: kuncibilika kuzincibilikisi zemvelo, kuncibilika kancane emanzini
- Inkomba ye-Refractive: cishe. 1.443-1.449
Sebenzisa:
- I-Dimethyl azelarate isetshenziswa ngokuyinhloko njenge-plasticizer, ene-plasticity enhle nokumelana nokubanda, futhi ingakhuphula ukuthambile nokumelana okubandayo kwamapulasitiki.
- Ivame ukusetshenziswa ekukhiqizeni amapulasitiki e-polyvinyl chloride (PVC), irabha yokwenziwa, ama-synthetic resin, njll., ukuthuthukisa ipulasitiki namandla abo.
- I-Dimethyl azelaate ingasetshenziswa futhi njengesithambiso, isithambisi nesinqamuleli sokuqandisa, phakathi kwezinye izinto.
Indlela:
I-Dimethyl azelaic acid ivame ukulungiswa ngokusabela kwe-esterification ngale ndlela elandelayo:
1. Yenza i-nonanediol nge-adipic acid.
2. Engeza ama-esterifying agents, njenge-sulfuric acid, njengama-catalysts ekuphenduleni kwe-esterification.
3. Ukusabela kwenziwa ngaphansi kwezimo ezifanele zokushisa nezingcindezi ukuze kukhiqizwe i-dimethyl azelaate.
4. Umkhiqizo uphinde uhlanzwe ngokuphelelwa amanzi emzimbeni, ukukhishwa kwe-distillation nezinye izinyathelo.
Ulwazi Lokuphepha:
- I-Dimethyl azelaic acid kufanele ivikelwe ngaphansi kwezimo ezijwayelekile zokusetshenziswa futhi igweme ukuthintana nesikhumba namehlo.
- Gqoka okokuvikela okufanele, okuhlanganisa ukuvikela ukuphefumula kanye namagilavu okuvikela, uma esetshenziswa.
- Kufanele kuqashelwe indawo enomoya omuhle ngesikhathi sokusebenza ukuze kugwenywe ukuhogela noma ukungenwa amanzi ngephutha.
- Ngesikhathi sokugcina nokuthutha, kuyadingeka ukuvimbela ukuthintana nama-oxidants, ama-acids nezinye izinto ukugwema izingozi eziyingozi.
