High-purity 4,4'-Diaminostibene-2,2'-disulfonic acid, CAS: 81-11-8 EINECS Code 201-325-2
Daim ntawv thov
4,4'-Diamino-2,2'-stilbenedisulfonic acid hmoov tuaj yeem xa los ntawm kev xa khoom, huab cua lossis hiav txwv.
Rau 1 ~ 100kg, peb xav kom xa nws los ntawm courier, uas yog sai dua thiab yooj yim dua.Dab tsi ntxiv,.Thiab cov khoom tuaj yeem xa tuaj rau ntawm qhov rooj.
Rau ntau tshaj 100kg, cov khoom tuaj yeem xa los ntawm huab cua lossis hiav txwv, thiab nws yog nyob ntawm koj.Tab sis peb yuav muab cov kev daws teeb meem zoo meej rau koj siv.
4,4'-Diamino-2,2'-stilbenedisulfonic acid 81-11-84,4'-Diamino-2,2'-stilbenedisulfonic acid 81-11-8
Yog tias koj xav yuav Diaminostilbene-2,2'-disulfonic acid los yog nug cov qauv ntawm 81-11-8, tab sis koj tseem muaj qee cov lus nug txog nws.Tsis muaj teeb meem.Koj tuaj yeem nrhiav cov lus teb hauv qab no lossis xav tiv tauj peb rau lwm cov lus nug.Pls nyem qhov no kom paub ntxiv...4,4'-Diamino-2,2'-stilbenedisulfonic acid 81-11-8
Raws li lub chaw tsim khoom tseem ceeb ntawm 4,4'-Diamino-2,2'-stilbenedisulfonic acid / Diaminostilbene-2,2'-disulfonic acid, peb muaj keeb kwm luv luv, tab sis peb muaj cov khoom siv hauv xeev thiab R & D pab pawg.
Ntim: 25kg / cardboard nruas
Peb tuaj yeem ntim raws li cov neeg siv khoom thov, txwv tsis pub yuav pob raws li peb lub Hoobkas.
Raws li kev xa khoom peb tuaj yeem siv DHL / EMS / TNT / FedEx / USPS lossis raws li koj qhov kev thov.
Los ntawm Courier | Los ntawm Cua | Los ntawm Hiav Txwv |
≤ 50kg | 50kg-500kg | ≥500kgs |
3-7 Hnub | 1-2 lub lis piam | 2-3 lub lis piam |
Qhov rooj rau qhov rooj | Tshav dav hlau mus rau tshav dav hlau | Seaport rau Seaport |
Yooj yim kom tau cov khoom | Xav tau Custom Clearance | Xav tau Custom Clearance |
Cov ntsiab lus ceev
Yam Khoom
Yam khoom | Specifications |
Melting point | 300 ° C |
ceev | 1.4732 (zeeg) |
Refractive Index | 1.6510 (kwv yees) |
cia temp. | -20 ° C Lub Freezer |
daim ntawv | Crystalline hmoov |
xim | Cream rau daj-xim av |
Dej Solubility | <0.1 g / 100 mL ntawm 23 ºC |
Yam khoom | Cov khoom ntub dej | Cov khoom qhuav |
Qhov tshwm sim | Lub teeb daj muab tshuaj txhuam | Lub teeb daj hmoov |
Gardner xim ≤ | 10 | 9 |
Tag nrho Amino Tus Nqi ≥ | 54% | 95% |
Teeb meem Insolubles ≤ | 0.05% | 0.08% |
Benzyl Matter ≤ | 0.25% | 0.25% |
Fe (ppm) ≤ | 50 | 60 |
Shipping lub sij hawm los ntawm hiav txwv (Tsuas yog rau siv) | ||||||||
North America | 11-30 hnub | North Africa | 20 ~ 40 hnub | Teb chaws Europe | 22-45 hnub | South-East Asia | 7 ~ 10 hnub | |
South America | 25-35 hnub | WestAfrica | 30 ~ 60 hnub | MiddleEast | 15 ~ 30 hnub | East Asia | 2 ~ 3 hnub | |
Middle America | 20 ~ 35 hnub | Teb chaws Africa | 23-30 hnub | Ocenia | 15 ~ 20 hnub | South Asia | 10 ~ 25 hnub |
Q1: Puas yog cov chaw tsim khoom lossis tuam txhab lag luam?
A: Peb yog cov chaw tsim khoom.Koj tuaj yeem tuaj xyuas peb lub Hoobkas.
Q2: Yuav tiv tauj peb li cas?
A: Nyem rau "Tau Txais Tus Neeg Siv Khoom", xa peb cov lus, koj yuav tau txais lus teb hauv 24 teev.
Q3: Cov nqe lus them nqi twg koj txais?
A: Rau kev txiav txim ntau, koj tuaj yeem them rau peb lub tuam txhab tus account hauv txhab nyiaj.
Q4: Koj puas tuaj yeem muab tus nqi luv nqi rau kuv?
A: Tseeb, nws nyob ntawm koj qhov ntau.
Q5: Kuv tuaj yeem tau txais tus qauv li cas?
A: Koj tuaj yeem tham nrog peb, peb ib txwm xa cov qauv los ntawm FEDEX, DHL, EMS.
Ob peb qauv yog dawb tab sis koj yuav tsum tau them tus nqi thauj khoom.
Q6: Yuav ua li cas kom paub meej cov khoom zoo ua ntej muab xaj?
A: Koj tuaj yeem tau txais qee cov qauv, lossis peb tuaj yeem xa daim ntawv pov thawj ntawm kev tshuaj ntsuam xyuas lossis HPLC lossis NMR rau koj.
Q7: Kuv tuaj yeem them nyiaj zoo li cas?
A: Tag nrho cov kev lag luam yog nyob rau hauv Alibaba (Third Party) tshuaj xyuas.
Q8: Puas yog nws tuaj yeem ua cov ntawv lo nrog peb tus kheej tsim?
A: Yog, tsuas yog xa koj cov duab kos rau peb, koj yuav tau txais yam koj xav tau.