Khoom Description
Khoom npe: HQDA
CAS: 17828-53-4 Nr
MF: C22H10O8
PIB: 402.31
Melting point: 251-252 degree
Kub taw tes: 638.9 ± 50.0 degree
Qhov ceev: 1.566
Specification
| Cov khoom | Specifications |
| Qhov tshwm sim | Dawb siv lead ua |
| Purity | 99% Min. |
| cia temp. | 2-8℃tub yees |
| Pob | 1 kg / hnab los yog 20 kg / nruas |
Daim ntawv thov
1. Ua raws li ib qho tseem ceeb monomer rau synthesizing siab -kev ua tau zoo polyimide resins nrog zoo thermal thiab mechanical stability.
2. Siv HQDA hauv kev tsim cov khoom siv hluav taws xob zoo tshaj plaws xws li siab - cov yeeb yaj kiab rwb thaiv tsev kub thiab cov khoom siv hluav taws xob hloov tau yooj yim.
3. Siv nyob rau hauv kev tsim aerospace-qib cov ntaub ntawv sib xyaw thiab corrosion- cov coatings resistant rau ib puag ncig hnyav.
Cia thiab ceev faj
HQDA (4,4'-Hydroquinone Diphthalic Anhydride) yuav tsum muab khaws cia rau hauv lub thawv kaw ntom ntom ntawm 2–8℃hauv qhov txias, qhuav, thiab zoo- qhov cua qhov chaw tsaus.
Tiv thaiv HQDA los ntawm ya raws, ncaj qha tshav ntuj, thiab oxidizing tus neeg sawv cev los tiv thaiv hydrolysis thiab degradation.
Thaum tuav, hnav cov tshuaj lom neeg-cov hnab looj tes tiv thaiv, tsom iav, thiab lub tsho tiv thaiv kev sim, thiab ua haujlwm hauv lub hood kom tsis txhob nqus plua plav. Tshem tawm lub ntim tam sim tom qab siv thiab pov tseg cov pov tseg raws li cov cai tswj kev phom sij hauv zos. Tsis txhob sib xyaw nrog cov kua qaub lossis cov hauv paus.
Ntim
Kev thauj mus los & Kev Them Nyiaj
Txog Kev Thauj Mus Los
Raws li cov kev xav tau ntawm peb cov neeg siv khoom, peb tuaj yeem muab ntau yam kev xaiv kev thauj mus los.
Rau kev txiav txim me me, peb muab kev xa khoom huab cua lossis kev pabcuam xa khoom thoob ntiaj teb xws li FedEx, DHL, TNT, EMS, thiab ntau lwm yam tshwj xeeb ntawm kev thauj mus los thoob ntiaj teb.
Peb tuaj yeem thauj los ntawm hiav txwv mus rau ib qho chaw nres nkoj rau qhov loj dua.
Tsis tas li ntawd, peb tuaj yeem muab cov kev pabcuam tshwj xeeb raws li cov kev xav tau ntawm peb cov neeg siv khoom thiab cov yam ntxwv ntawm lawv cov khoom.
* Peb tuaj yeem muab ntau yam kev xaiv them nyiaj rau peb cov neeg siv khoom.
* Thaum cov nyiaj qis qis, cov neeg siv khoom feem ntau them nrog PayPal, Western Union, Alibaba, thiab lwm yam kev pabcuam zoo sib xws.
* Thaum cov lej tseem ceeb, cov neeg siv khoom feem ntau them nrog T / T, L / C thaum pom, Alibaba, thiab lwm yam.
* Tsis tas li ntawd, ntau tus neeg siv khoom yuav siv Alipay lossis WeChat Them kom them nyiaj.
FAQ
1
Kuv puas tuaj yeem tau txais cov qauv ntawm koj?
Re: Yog lawm, peb xav muab cov qauv rau koj raws li koj xav tau.
2
Koj tus MOQ yog dab tsi?
Re: Feem ntau peb cov MOQ yog 1 kg, tab sis qee zaum nws kuj hloov tau thiab nyob ntawm cov khoom sib txawv.
3
Ntev npaum li cas kuv tuaj yeem tau txais kuv cov khoom tom qab them nyiaj?
Re: Yog tias xa los ntawm couriers lossis huab cua, nws feem ntau raug nqi 5-10 hnub.
Yog tias xa los ntawm hiav txwv, nws feem ntau raug nqi 3-40 hnub, uas nyob ntawm koj qhov chaw nyob.
4
Koj puas muaj kev pabcuam tom qab- muag?
Re: Yog lawm, peb yuav qhia koj txog kev nce qib ntawm qhov kev txiav txim, xws li kev npaj cov khoom, kev tshaj tawm, kev thauj mus los ua raws- nce, kev pabcuam kev lis kev cai, kev qhia txuj ci, thiab lwm yam.
Tiv tauj peb
Cim npe nrov: Hqda CAS 17828-53-4, Tuam Tshoj hqda cas 17828-53-4 manufacturers, lwm tus, Hoobkas
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