Khoom Description
Khoom npe: Protocatechuic acid
CAS: 99-50-3 Nr
PIB: 202-760-0
Melting point: 197-200℃(dec.) (lit.)
Kub taw tes: 237.46℃(nrawm kwv yees)
Qhov ceev: 1.54
Refractive Index: 1.6400 (kwv yees)
FEMA: 4430|3,4-DIHYDROXYBENZOIC ACID
Specification
| Cov khoom | Specifications |
| Qhov tshwm sim | Tsis muaj xim thiab pob tshab kua |
| Purity | 99% |
| Cia temp. | Khaws hauv qab +30℃. |
| Pob | 1 kg / hnab, 20 kg / nruas, 25 kg / nruas |
Daim ntawv thov
1. Protocatechuic acid yog ib tug natural phenolic acid feem ntau siv nyob rau hauv kev tshawb fawb tshuaj rau nws muaj zog antioxidant, tiv thaiv -inflammatory, thiab neuroprotective zog, nrog rau cov kev tshawb fawb qhia tau hais tias muaj peev xwm rau cov ntaub so ntswg regeneration thiab relieving oxidative kev nyuaj siab.
2. Protocatechuic acid CAS 99-50-3 nthuav tawm ntau yam kab mob lom neeg xws li tshuaj tua kab mob, tiv thaiv qog noj ntshav, tiv thaiv hyperglycemic, thiab tiv thaiv kab mob plawv, thiab ua haujlwm ua cov metabolite ntawm complex polyphenols zoo li anthocyanins .
3. Protocatechuic acid yog ua hauj lwm nyob rau hauv cov zaub mov kev lag luam daim ntawv thov raws li ib tug natural preservative nrog antioxidant thiab antibacterial muaj peev xwm mus cuag lub neej txee, thiab nyob rau hauv cov tshuaj pleev ib ce raws li ib tug active ingredient rau anti- laus thiab whitening khoom.
4. Cov kws tshawb fawb siv Protocatechuic acid CAS 99-50-3 hauv kev ua liaj ua teb raws li kev tiv thaiv cov nroj tsuag ntuj, thiab cov derivatives xws li nws cov methyl ester tau pom cov tshuaj tiv thaiv kab mob tiv thaiv kab mob tom qab sau qoob xws li * Botrytis cinerea * hauv strawberries .
Cia thiab ceev faj
1. Protocatechuic acid yuav tsum tau muab cia rau hauv lub thawv kaw nruj nreem rau hauv qhov txias, qhuav, thiab zoo - qhov cua qhov chaw ntawm 2-8℃lossis -20℃kom ruaj khov mus ntev, tiv thaiv lub teeb thiab noo noo.
2. Protocatechuic acid CAS 99-50-3 yog cais nrog GHS cov lus txaus ntshai H315 (Ua rau tawv nqaij khaus), H319 (Ua rau qhov muag khaus hnyav), thiab H335 (Tej zaum ua rau ua pa ua pa), nrog cov lus ceeb toom "Civ txwv".
3. Cov neeg ua haujlwm yuav tsum hnav cov tshuaj lom neeg- cov hnab looj tes tiv thaiv, tsom iav kev nyab xeeb nrog sab - cov ntaub thaiv npog, thiab cov khaub ncaws tiv thaiv thaum tuav cov tshuaj no, ua kom muaj cua txaus hauv thaj chaw ua haujlwm thiab zam kev tsim cov plua plav thiab aerosols.
4. Khaws Protocatechuic acid CAS 99-50-3 kom deb ntawm cov khoom siv tsis sib xws xws li cov tshuaj muaj zog oxidizing thiab cov hauv paus muaj zog los tiv thaiv decomposition; rau kev daws teeb meem, npaj aliquots thiab tsis txhob rov qab khov-thaw mus.
Kev kub ceev teb rau cov dej xau
1. Tshem tawm ntawm qhov chaw nchuav, ua kom muaj cua txaus, thiab hnav cov khoom tiv thaiv tus kheej nrog rau cov tshuaj lom neeg - cov hnab looj tes tiv thaiv, tsom iav kev nyab xeeb, thiab lub tshuab nqus plua plav uas tsim nyog thaum protocatechuic acid tso tawm.
2. Sau Protocatechuic acid CAS 99-50-3 los ntawm kev cheb lossis nqus tsev yam tsis tsim cov plua plav uas siv cov cuab yeej tsis ua kom tawg, thiab muab tso rau hauv cov thawv kaw tsim nyog rau kev pov tseg, tsis txhob muaj plua plav.
3. Tsis txhob tsim cov huab cua thaum lub sij hawm ntxuav kom tsis txhob ua pa; tiv thaiv cov khoom los ntawm kev nkag mus rau hauv cov dej ntws los yog cov dej hauv chav dej raws li kev tawm mus rau ib puag ncig yuav tsum zam (WGK Lub Tebchaws Yelemees 3).
4. Tshem tawm cov khoom pov tseg raws li cov khoom pov tseg uas muaj kev phom sij raws li hauv zos, xeev, thiab tsoomfwv cov cai tswjfwm ib puag ncig los ntawm kev muaj ntawv tso cai ua kom puas tsuaj lossis tswj kev tua hluav taws.
Kev tiv thaiv hluav taws
1. Protocatechuic acid muaj melting point ntawm 197-200℃(dec.) thiab boiling point ntawm 410.7℃ntawm 760 mmHg; Nyob rau hauv cov xwm txheej hluav taws kub, cov khoom tsim kev puas tsuaj muaj xws li cov pa roj carbon monoxide thiab carbon dioxide.
2. Siv cov tshuaj tsuag dej, tshuaj qhuav hmoov, carbon dioxide, los yog cawv- ua npuas ncauj resistant los tua hluav taws nrog cov khoom; Tsis txhob siv lub dav hlau dej ncaj qha raws li Protocatechuic acid CAS 99-50-3 tuaj yeem tawg cov khoom tawg.
3. Cov neeg tua hluav taws yuav tsum hnav nws tus kheej- muaj cov cuab yeej ua pa hauv siab- thov, MSHA/NIOSH tau pom zoo, thiab cov iav tiv thaiv tag nrho thaum tuav cov hluav taws kub hnyiab protocatechuic acid vim muaj cov pa phem uas tsim los ntawm thermal decomposition.
4. Thaum lub sij hawm combustion, tej zaum yuav emit irritant thiab toxic fumes; txav cov thawv los ntawm qhov chaw tua hluav taws yog tias muaj kev nyab xeeb ua li ntawd, txias cov thawv ntim nrog cov tshuaj tsuag dej los ntawm qhov chaw tiv thaiv, thiab muaj cov hluav taws kub los tiv thaiv ib puag ncig thiab muaj kuab paug.
Yam khoom pom zoo
| Cov khoom | Khoom npe |
| 1 | Sodium Hydrosulphite / Sodium Dithionite CAS 7775-14-6 |
| 2 | Tom ntej: Allyl Cyclohexylpropionate CAS 2705-87-5 |
| 3 | DL-Benzoin CAS 579-44-2 |
| 4 | (3-Glycidyloxypropyl)triethoxysilane / KH-561 CAS 2602-34-8 |
| 5 | 1-Methyl-4-imidazolecarboxylic Acid/1-Methyl-1H-imidazole-4-carboxylic Acid CAS 41716-18-1 |
| 6 | N,N'{0}}Bis(2-hydroxyethyl)piperazine/1,4-Bis(2-hydroxyethyl)piperazine CAS 122-96-3 |
| 7 | Dodecylbenzenesulphonic acid CAS 27176-87-0 |
| 8 | 5' -Deoxy-5-fluorocytidine CAS 66335-38-4 |
| 9 | D-Serine CAS 312-84-5 |
| 10 | Yog tias koj xav tau cov ntaub ntawv ntxiv, txais tos hu rau peb txhua lub sijhawm.WhatsApp: +86 18317156592
|
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 hom 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.
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: Protocatechuic Acid CAS 99-50-3, Tuam Tshoj Protocatechuic Acid CAS 99-50-3 manufacturers, lwm tus neeg, Hoobkas
