Tshuaj Reagents

Tuam txhab Profile

Henan Alfa Chemical Co., Ltd, tau tsim nyob rau hauv Suav teb ntau xyoo dhau los nrog lub hom phiaj ntawm kev muab cov tshuaj zoo rau peb cov neeg siv khoom. Ntau xyoo dhau los, peb tau ua haujlwm tsis tu ncua los txhawb peb lub koob npe nrov raws li tus neeg muag khoom tshuaj lom neeg muaj kev ntseeg siab thiab kev ntseeg siab hauv kev ua lag luam.Thaum ntxov, peb pib los ntawm kev muab cov tshuaj yooj yim rau cov lag luam me. Txawm li cas los xij, raws li peb lub koob npe nrov, yog li peb cov neeg siv khoom thiab ntau yam tshuaj uas peb tau muab. Peb tam sim no txaus siab los muab ntau yam tshuaj xws li cov tshuaj reagents, cov khoom siv tshuaj thiab cov tshuaj lom neeg ua kom tau raws li qhov xav tau ntawm ntau yam kev lag luam & kev tshawb fawb.

tuam txhab kom zoo dua

Cov khoom lag luam nplua nuj

Peb lub tuam txhab tuaj yeem tsim cov tshuaj reagents, cov khoom siv tshuaj thiab biochemicals kom tau raws li cov kev xav tau ntawm kev lag luam hauv tsev thiab txawv teb chaws, thiab xa tawm mus rau Tebchaws Meskas, European Union thiab lwm lub tebchaws thiab cheeb tsam, nrog rau cov teb chaws Asia, Africa, thiab Middle East.

Quality Assurance

Peb yog cov chaw tsim khoom lag luam tau lees paub los ntawm FDA, CCE thiab REACH cov qauv. Peb cov khoom yog 100% Hoobkas kuaj thiab zoo ntim. Tag nrho peb cov khoom ua raws li cov qauv kev lag luam xws li CE, ISO, thiab lwm yam.

Advanced Instruments

Peb lub tuam txhab muaj cov cuab yeej siv siab tshaj plaws thiab cov cuab yeej siv tshuaj thiab cov cuab yeej siv siab tshaj plaws, xws li kev ua haujlwm siab ua kua chromatography, ntsuas ntsuas ntsuas, UV-pom spectrophotometers, thiab lwm yam.; nws tseem yog nruab nrog cov chaw soj nstuam siab heev uas tuaj yeem tsim tshwj xeeb hauv kev tsim cov tshuaj reagents, cov khoom siv tshuaj, tshuaj muaj tshuaj thiab lwm yam.

Kev Pabcuam

Peb muaj ntau xyoo ntawm kev lag luam kev paub thiab ua tiav kev tswj hwm kev tsim khoom, kev saib xyuas zoo, kev pabcuam kev muag khoom. Txawm hais tias koj xav yuav cov tshuaj reagents sib txawv, lossis lwm yam biochemicals, tsuas yog xa koj cov cai ntawm email thiab peb tuaj yeem kho cov khoom rau koj. Peb kuj txais OEM customization.

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Dab tsi yog Dibromoanisole

Dibromoanisole, tseem hu ua o-methoxybromobenzene, o-bromoanisole, 1-bromo-2-methoxybenzene, o-bromoanisole, methoxy-2-bromobenzene, lus Askiv lub npe 1-Bromo {{7} }methoxybenzene. Cov mis mos molecular C7H7BrO, molecular hnyav 187.03. Lub teeb daj oily kua, insoluble hauv dej, soluble hauv ethanol thiab ether. Toxic, thermal decomposition tso tawm cov pa phem bromide.

Synthesis ntawm Dibromoanisole

Txoj kev ib
Potassium carbonate (5.5 g, 39.7 mmol) thiab potassium iodide (2.7 ml, 43.7 mmol) tau maj mam ntxiv rau hauv cov tshuaj 3, 5-dibromophenol (5.0 g) hauv acetone qhuav (25 ml. ) ntawm 60 degree. Do cov tshuaj tiv thaiv sib tov ntawm qhov kub thiab txias rau 16 teev. Tom qab cov tshuaj tiv thaiv tiav, txias cov tshuaj tiv thaiv sib tov rau hauv chav tsev kub, lim cov tshuaj tiv thaiv sib tov, thiab mloog zoo rau cov filtrate kom tau lub hom phiaj cov khoom molecule.

Cov yam ntxwv ntawm Crocin

Txoj Kev Ob
Rau kev sib xyaw ntawm 3, 5-dibromophenol (1.98 mmol) thiab potassium carbonate (2.2 g, 15.8 mmol, 8.0 equiv) hauv ethanol (85 mL) tau maj mam ntxiv methane iodide (2.80 g) thiab ces stirred nyob rau hauv argon Cov sib tov yog refluxed thiab stirred rau 12 teev nyob rau hauv huab cua. Tom qab cov tshuaj tiv thaiv, cov tshuaj tiv thaiv kab mob tau evaporated hauv lub tshuab nqus tsev. Qhov sib tov yog nchuav rau hauv dej, thiab cov txheej txheem dej tau muab rho tawm peb zaug nrog dichloromethane. Cov txheej txheem organic tau qhuav dhau anhydrous magnesium sulfate thiab lim tawm. Magnesium sulfate khoom, mloog zoo rau cov organic txheej hauv lub tshuab nqus tsev kom tau txais lub hom phiaj khoom molecule.

Dab tsi yog Daim Ntawv Thov ntawm Dibromoanisole

Dibromoanisole feem ntau yog siv los ua ib qho nruab nrab hauv tshuaj chemistry thiab organic synthesis. Nyob rau hauv cov organic synthesis transformations, bromine atom ntawm lub nplhaib benzene tuaj yeem hnov mob nrog aryl boron reagent nyob rau hauv kev sib txuas thiab txuas ob ntawm txoj haujlwm 3 thiab 5. Tsis tas li ntawd, bromine atom ntawm lub nplhaib benzene tuaj yeem xaiv tau hloov mus rau hauv iodine atom. ; ether daim ntawv cog lus hauv cov qauv tuaj yeem tawg tau raws li qhov kev txiav txim ntawm boron tribromide kom tau txais cov phenolic compound.

Kev ceev faj rau kev tuav dibromoanisole

1. Cov neeg ua haujlwm yuav tsum tau txais kev cob qhia tshwj xeeb thiab ua raws li cov txheej txheem ua haujlwm.

2. Kev khiav hauj lwm thiab kev pov tseg yuav tsum tau ua nyob rau hauv ib qho chaw uas muaj qhov cua hauv zos lossis cov chaw ua pa dav dav.

3. Tsis txhob kov lub qhov muag thiab tawv nqaij, thiab tsis txhob nqus pa.

4. Khaws kom deb ntawm qhov hluav taws kub thiab cua sov. Kev haus luam yeeb yog txwv tsis pub nyob hauv chaw ua haujlwm.

5. Siv cov tshuab ua pa tawm thiab cov khoom siv tawg.

6. Yog hais tias yuav tsum tau canning, tus nqi ntws yuav tsum tau tswj thiab ib tug grounding ntaus ntawv yuav tsum tau muab ntsia los tiv thaiv cov tsub zuj zuj ntawm static hluav taws xob.

7. Tsis txhob sib cuag nrog cov khoom siv tsis sib xws xws li oxidants.

8. Thaum tuav, thauj khoom thiab tshem tawm nrog kev saib xyuas kom tsis txhob muaj kev puas tsuaj rau cov ntim thiab ntim.

9. Cov thawv khoob yuav muaj cov khoom tsis zoo.

10. Ntxuav koj txhais tes tom qab siv thiab txwv tsis pub noj thiab haus hauv chaw ua haujlwm.

11. Nruab nrog ntau yam thiab ntau ntawm cov khoom siv tua hluav taws thiab cov khoom siv kho mob thaum muaj xwm ceev.

Dab tsi yog Dichloroisonicotinal

Dichloroisonicotinic acid (INA) yog suav tias yog cov qauv thiab kev ua haujlwm zoo ntawm salicylic acid (SA). Cov kev sim tau lees paub tias 2,6-dichloroisonicotinic acid tuaj yeem txhim kho cov kab mob tiv thaiv kab mob, ua kom cov nroj tsuag tau txais kev tiv thaiv (SAR) cov lus teb, thiab muab cov kab mob dav dav.

Yuav Ua Li Cas Xaiv Dichloroisonicotinaldehyde

Xwm

Qhov tsos:2,6-Dichloropyridine-4-carboxylic acid yog xim tsis muaj xim rau lub teeb daj crystalline hmoov.

Solubility:Nws muaj cov dej tsis zoo hauv dej, tab sis tuaj yeem yaj hauv cov kuab tshuaj organic xws li ethanol thiab dimethylformamide.

Siv

Khoom siv synthesis:2;

Pab pawg tiv thaiv cawv:Nws tuaj yeem siv los ua ib pab pawg tiv thaiv cawv los hloov cawv rau hauv Nws yog cov sib xyaw ester sib xyaw thiab muaj cov ntawv thov tseem ceeb hauv cov organic synthesis.

Txoj kev npaj

Ib txoj hauv kev los npaj 2,6-dichloropyridine-4-carboxylic acid yog los ntawm hydroxymethylation ntawm 2,6-dichloropyridine, ua raws li oxidation thiab hydroxymethylation kom tau txais cov khoom lag luam.

Dab tsi yog Daim Ntawv Thov ntawm Dichloroisonicotinal

Dichloroisonicotinic acid thiab nws cov derivatives tuaj yeem ua rau lub cev tsis zoo hauv cov nroj tsuag. Cov tshuaj tuaj yeem tiv thaiv cucumbers, nplej thiab lwm yam nroj tsuag los ntawm ntau yam fungi, kab mob thiab kab mob thaum siv hauv tsev cog khoom thiab teb. Kev kho tag nrho cov nroj tsuag, nplooj nplooj lossis cov noob nrog 2,6-dichloroisonicotinic acid tuaj yeem ua kom cov nroj tsuag muaj kab mob tiv thaiv kab mob thiab tiv thaiv cov qoob loo los ntawm cov kab mob xws li kab mob, kab mob thiab fungi. Raws li kev pom ntawm lub luag haujlwm tseem ceeb ntawm SAR cov lus teb hauv cov lus teb rau cov kab mob tiv thaiv kab mob, muaj ntau txoj kev tshawb fawb txog kev sib raug zoo ntawm INA thiab cov kab mob cog qoob loo hauv xyoo tas los no.

Tus Qauv Zoo rau Dichloroisonotinic Acid

Qhov tshwm sim
Feem ntau dawb mus rau lub teeb daj crystalline hmoov, tsw tsw.

Melting point
Lub melting point yog nyob nruab nrab ntawm 209 thiab 212 degree C (lit.), thiab lub melting point tshwj xeeb yuav txawv Tej zaum yuav txawv vim txawv ntau lawm batches thiab txheej txheem.

Boiling point
Kub taw tes yog 437.8 ± 4 0.0 degree C (Predicted), tshwj xeeb
Lub boiling point yuav txawv nyob ntawm seb ntau lawm ntau lawm batches thiab txheej txheem.

Qhov ntom
Qhov ceev yog 1.612 ± 0.06 g / cm3 (Predicted).

Cia tej yam kev mob
Nws yuav tsum tau muab cia rau hauv qhov chaw txias, qhuav, thiab qhov cua zoo, Tsis txhob tshav ntuj ncaj qha thiab kub siab.

Solubility
Yooj yim soluble hauv cov kuab tshuaj organic xws li methanol, ethanol, acetone, thiab lwm yam
Soluble hauv dej.

Cov khoom siv tshuaj
Cov khoom no muaj hygroscopicity, decomposes thaum sib cuag nrog dej, thiab yog insoluble nyob rau hauv dej Dej, me ntsis soluble nyob rau hauv ethanol, soluble nyob rau hauv organic solvents xws li ether, acetone, chloroform, benzene, thiab lwm yam.

Daim ntawv thov
2, 6-Dichloroisoniacin yog ib qho tseem ceeb nruab nrab ntawm cov organic synthesis
Lub cev, tuaj yeem siv los ua ke ntau yam tshuaj, tshuaj tua kab, dyes, thiab lwm yam.

Txuj cai zoo
Raws li tus qauv zoo ntawm lub teb chaws los yog thoob ntiaj teb tus qauv lub koom haum Cov qauv zoo rau 2, 6-dichloroisononicotinic acid nyob rau hauv lub quasi system tej zaum yuav CAS tus naj npawb los yog feem ntau Formula, molecular hnyav, thiab lwm yam.

Octyl isocyanate yog dab tsi

Octyl isocyanate tau siv los tiv thaiv sab kev tshwm sim xws li backbiting los yog saw hloov cov tshuaj tiv thaiv thaum lub sij hawm cov tshuaj tiv thaiv polymerization. Nws kuj tau siv nyob rau hauv cov synthesis ntawm: tsawg molar mass organogelator uas muaj 2-(2-hydroxyphenyl)benzoxazole (HPB) chav tsev nrog ntev alkyl saw.Cov qauv molecular ntawm octyl isocyanate cuam tshuam nws reactivity thiab lub cev zog. Lub electron paramagnetic resonance spectra ntawm spin-labelled poly (octyl isocyanate) nyob rau hauv ntau yam kuab tshuaj tau qhia rhiab heev rau lub zos conformation thiab yooj ntawm cov polyisocyanate saw, qhia hnyav-dependent saw yooj thiab aggregation zog (T. Turunen li al., 1995) .

Txoj kev npaj ntawm Octyl isocyanate

Hauv kev lag luam, thawj txoj kev amine phosgene yog siv los tsim isocyanate. Cov tshuaj tiv thaiv yog raws li nram no: Diisocyanate tuaj yeem tau los ntawm diamine phosgene txoj kev: Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis thiab kev sib sib zog nqus ntawm kev tshawb xav, nitro compounds ncaj qha ua ke nrog carbon monoxide los ntawm kev kub siab thiab kub siab catalysis. Cov thev naus laus zis isocyanate tau dhau los ua neeg paub tab.

Vim tias cov qauv isocyanate muaj cov ntawv cog lus tsis txaus ntseeg, nws yog qhov muaj zog heev thiab yooj yim reacts nrog qee cov organic lossis inorganic tshuaj nrog cov pab pawg reactive los tsim polyurethane elastomers.

(1) Cov tshuaj tiv thaiv nrog hydroxyl compounds:Piv txwv li, nws reacts nrog polyols, polyethers, polyesteramides, castor roj thiab lwm yam active hydroxyl tebchaw los tsim carbamate.

(2) Cov tshuaj tiv thaiv nrog cov amino-muaj cov tebchaw:Cov tshuaj tiv thaiv nrog amine tebchaw feem ntau tsim cov urea hloov pauv, thiab yog tias muaj cov tshuaj tiv thaiv ntxiv, biuret nws thiaj li tsim tawm.

(3) Cov tshuaj tiv thaiv dej:Nws reacts nrog dej los tsim amine thiab carbon dioxide, thiab cov amine ntxiv reacts nrog isocyanate los tsim urea hloov.

(4) Cov tshuaj tiv thaiv nrog carboxyl-muaj cov tebchaw:Reacts nrog cov organic carboxylic acids, polyesters nrog carboxyl terminals thiab lwm cov tebchaw ua ntej tsim cov anhydrides sib xyaw, thiab thaum kawg decomposes tso carbon dioxide los tsim amides.

(5) Cov tshuaj tiv thaiv carbamate:Cov tshuaj tiv thaiv generates allophanate.

Dab tsi yog Daim Ntawv Thov ntawm Octyl isocyanate

Kev tshawb fawb Polymer

Octyl isocyanate tau siv los kawm txog cov saw yooj yooj yim, sib sau ua ke, thiab gelation ntawm polymers. Nyob rau hauv ib txoj kev tshawb fawb los ntawm et al.Lub electron paramagnetic resonance spectra ntawm spin-labeled poly (octyl isocyanate) nyob rau hauv ntau yam kuab tshuaj qhia kev nkag siab rau hauv lub zos conformation thiab yooj ntawm cov polyisocyanate saw, qhia nws aggregation thiab gelation zog nyob rau hauv tej yam hnyav.

Enzyme Inhibition

Xws li octyl isocyanate, hnov mob tshwj xeeb nrog serine proteinases xws li chymotrypsin thiab elastase. Txoj kev tshawb no qhia lawv lub peev xwm ua cov cuab yeej tshuaj tshwj xeeb rau kev ntsuas qhov ntev ntawm enzyme active sites.

Anionic Polymerization

Koom nrog cov anionic polymerization ntawm isocyanates nrog kev ua haujlwm kho qhov muag, qhov twg octyl isocyanate tau siv los cuam tshuam cov kev cuam tshuam sab xws li rov qab los yog cov saw hlau hloov pauv. Qhov kev tshawb fawb no pab txhawb kom nkag siab txog cov txheej txheem polymerization thiab cov khoom ntawm cov polymers uas tshwm sim.

Synthesis Studies

Cov synthesis ntawm n-octyl isocyanate tau tshawb nrhiav, nrog rau kev tshawb fawb tsom mus rau txoj hauv kev kom ua tiav siab purity thiab tawm los, raws li tau piav qhia hauv kev tshawb fawb los ntawm Zheng Jun. Cov kev tshawb fawb no pab ua kom muaj txiaj ntsig zoo ntawm octyl isocyanate rau ntau yam kev siv.

Protein-Isocyanate Interactions

Octyl isocyanate tau kawm txog nws cov kev sib cuam tshuam nrog cov proteins.detailed tus qauv ntawm octylcarbamoyl-alpha-chymotrypsin thiab tham txog hom n-octyl alkyl khi rau chymotrypsin, muab kev nkag siab txog cov qauv protein thiab kev ua haujlwm.

Kev Ua Haujlwm Kev Nyab Xeeb thiab Kev Noj Qab Haus Huv

Kev tshawb nrhiav kev siv tryptamine los ua kom cov huab cua hauv isocyanates, suav nrog octyl isocyanate, rau kev nyab xeeb thiab kev saib xyuas kev noj qab haus huv hauv kev lag luam. Lawv cov kev tshawb fawb tsom mus nrhiav cov kuab tshuaj uas tsim nyog rau impinger huab cua piv txwv ntawm isocyanates.

Cov khoom siv tshuaj ntawm Octyl Isocyanate

Ib qho kev sib txawv hauv diisocyanates yog tsim los ntawm aliphatic diisocyanates (ADI), nyob rau hauv uas NCO pawg tau txuas rau alkyl chains, thiab aromatic diisocyanates (DII), uas NCO pawg tau txuas nrog cov nplhaib uas muaj ntxhiab. Ntau yam ntawm ob hom yog siv hauv PU-daim ntawv thov (Szycher, 2017). Volume-wise, hexamethylene diisocyanate (HDI) thiab isophorone diisocyanate (IPDI) yog cov neeg sawv cev tseem ceeb tshaj plaws ntawm ADI. Rau DII, methylenediphenyl diisocyanate (MDI-tseem hu ua diphenylmethane diisocyanate) thiab toluene diisocyanate (TDI) yog cov khoom siv PU ntau tshaj plaws. Cov khoom lag luam polycondensation muaj qhov hu ua homologues siab dua nrog ntau lub nplhaib uas muaj ntxhiab txuas nrog methylene txuas hniav thiab sib txuas, ntau ntau ntawm NCO pawg ib molecule, uas yog hu ua NCO functionality. Daim duab 1 qhia tau hais tias xws li homologue nrog NCO functionality ntawm 4. Faib qhov hnyav molecular los ntawm NCO functionality yields lub functional-pawg-sib npaug qhov hnyav (FGEW), tus nqi uas muaj kev cai thoob ntiaj teb.

Peb Cov Khoom

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FAQ

Q: Qhov hnyav molecular ntawm isocyanate yog dab tsi?

A: Nws tseem hu ua 1.1′-Methylenebis (4-isocyonatobenzene), 4.4′-Methylene diphenyl diisocyanate thiab ntshiab MDI. Nws cov tshuaj formula yog C15H10N2O2. Nws muaj ib tug melting point ntawm 40 degree thiab ib tug boiling point ntawm 314 degree. Nws qhov hnyav molecular yog 250.25 g / mol.

Q: Dab tsi yog qhov raug txwv rau isocyanate?

A: Lub qab nthab txwv (C), los yog theem ntawm kev kis uas yuav tsum tsis txhob tshaj, yog {{0}}.2 mg/m3 rau methylene bisphenyl isocyanate (MDI), thiab 0.14 mg/m3 rau toluene -2, 4-diisocyanate (TDI).Isocyanates react nrog dej los tsim carbon dioxide: RNCO + H 2O → RNH 2 + CO. Cov tshuaj tiv thaiv no yog siv los ntawm kev tsim cov polyurethane rau muab polyurethane foams. Cov pa roj carbon dioxide ua haujlwm raws li lub tshuab tshuab.

Q: Puas yog isocyanate hnyav dua li huab cua?

A: Gaseous methyl isocyanate yog kwv yees li 1.4 npaug hnyav dua li huab cua. Methyl isocyanate kua yog xim tsis muaj xim nrog pungent tsw. Cov neeg feem coob tuaj yeem hnov tsw methyl isocyanate vapors ntawm qib qis li 2 txog 5 ppm. Methyl i

Q: Dab tsi dissolves isocyanate?

A: Dynasolve® ISO-Neutralizer Liquid Isocyanate Cleaning Solvent yog ib qho khoom ua ke rau Versum's urethane ntxuav cov kuab tshuaj. Nws yog siv los tshem tawm cov kua isocyanate ntau dhau los ntawm cov khoom siv urethane ua ntej ntxuav lub cev nrog Dynasolve® CU-6.

Q: Qhov kub ntawm isocyanate react li cas?

A: Cov kev tshawb fawb zoo thiab ntau nrog cov qauv sib txuas tau pom tias muaj ntau yam kev tshwm sim tuaj yeem tshwm sim ntawm 100-300 degree hauv cov molecules uas muaj isocyanate, urea thiab urethane pawg. Tag nrho lossis feem ntau ntawm cov tshuaj tiv thaiv no raug rau catalysis kom lawv tuaj yeem raug ntxias mus rau qhov kub qis dua.

Q: Dab tsi yog cov teeb meem nrog isocyanates?

A: Isocyanates tuaj yeem ua rau daim tawv nqaij rhiab heev, mob hawb pob, tawv nqaij lossis daim tawv nqaij ua paug, thiab, tsis tshua muaj, tsis tshua muaj mob ntsws hu ua hypersensitivity pneumonitis. Qee cov neeg ua haujlwm uas raug cov isocyanates tuaj yeem ua rau muaj kev puas tsuaj (uas txhais tau tias lawv tsim muaj kev fab tshuaj).

Q: Dab tsi PPE xav tau rau kev txau isocyanates?

A: Cov cuab yeej ua pa ntawm huab cua (BA) yuav tsum tau hnav los ntawm txhua tus neeg nyob hauv lub rooj muag khoom lossis chav tsev thaum lub sijhawm txau, rab phom ntxuav (txiav-rau-qhuav) thiab thoob plaws lub sijhawm tshem tawm. Siv visor-type, air-fed BA nrog qhov ntsuas qis qis, lossis ib nrab-qhov ncauj qhov ntswg BA (nrog cov cua ntws tsis tu ncua) thaum txau cov khoom siv isocyanate.

Q: Lub tshuab ua pa twg siv rau isocyanates?

A: Txij li thaum koj tsis tuaj yeem tsis hnov tsw lossis saj cov isocyanates, tsis muaj txoj hauv kev paub tias kev tawg tau tshwm sim. Vim li no, PK Kev Nyab Xeeb tsis pom zoo kom siv cov cartridges rau isocyanates. Hloov chaw peb pom zoo kom siv Allegro airline respirator.

Q: Kev siv cov isonicotinic acid yog dab tsi?

A: Isoniazid yog hydrazide ntawm isonicotinic acid. Nws yog siv los kho tuberculosis thiab kab mob HIV. Nws cov txiaj ntsig kho tau los ntawm nws lub peev xwm los thaiv cov synthesis ntawm mycolic acids, uas yog cov khoom ntawm mycobacterial cell wall.Picolinic acid yog tsim los ntawm 2-methylpyridine los ntawm oxidation, piv txwv li los ntawm cov poov tshuaj permanganate (KMnO4).

Q: CAS tus naj npawb ntawm pyridine 4 carboxylic acid yog dab tsi?

A: 4-Pyridinecarboxylic acid rau synthesis. CAS 55-22-1, pH 3 - 4 (6 g/l, H₂O, 20 degree ) (saturated solution). H319: Ua rau mob qhov muag loj heev.Isoniazid yog cov kab mob bactericidal tawm tsam cov kab mob ntawm cov kab mob Mycobacterium, tshwj xeeb yog M. tuberculosis, M. bovis thiab M. kansasii.

Q: Koj yuav tsum noj isoniazid pes tsawg zaus hauv ib hnub?

A: Rau kev kho mob tuberculosis: Cov neeg laus thiab menyuam yaus hnub nyoog 15 xyoos thiab laus dua uas hnyav 55 kilograms (kg) (121 phaus) lossis ntau dua - 6 ntsiav tshuaj ib hnub. Cov neeg laus thiab menyuam yaus hnub nyoog 15 xyoos thiab laus dua qhov hnyav ntawm 45 thiab 54 kg (99 thiab 119 phaus) - 5 ntsiav tshuaj ib hnub.

Q: Cov qauv ntawm isonicotinic acid yog dab tsi?

A: Isonicotinic acid lossis pyridine-4-carboxylic acid yog cov organic compound nrog cov mis C5H4N (CO2H). Nws yog ib qho derivative ntawm pyridine nrog carboxylic acid hloov ntawm 4- txoj hauj lwm.Nws yog ib qho isomer ntawm nicotinic acid thiab isonicotinic acid, uas muaj cov carboxyl sab saw ntawm 3- thiab 4- txoj hauj lwm, feem. Nws yog cov khoom dawb uas yog soluble hauv dej.

Q: Cov zaub mov twg muaj picolinic acid?

A: Picolinate, ib qho byproduct ntawm amino acid tryptophan, yog ua ke los txhawb kev nqus ntawm chromium. Cov khoom noj muaj xws li Brewer's poov xab, siab, nceb, hom qoob mog, oysters, thiab qee cov txiv hmab txiv ntoo tshiab.Picolinic acid yog cov khoom noj khoom haus uas siv los pab lub cev nqus cov zaub mov xws li zinc, magnesium, thiab chromium. Nws kuj yog siv los pab txhawb kev noj qab haus huv daim siab ua haujlwm thiab pab txo qis qaug zog.

Q: Cov zaub mov twg koj yuav tsum tsis txhob noj thaum noj isoniazid?

A: Cov neeg mob yuav tsum tau qhia kom tsis txhob noj cov zaub mov uas muaj tyramine (xws li cov cheese uas muaj hnub nyoog, cov nqaij kho mob xws li hnyuv ntxwm thiab salami, taum fava, sauerkraut, kua ntses, npias, lossis liab caw) lossis histamine (xws li skipjack, tuna, mackerel, salmon) thaum kho nrog isoniazid.

Q: Cov dej haus puas zoo rau TB?

A: Haus dej kom txaus kom koj tus kheej muaj dej txaus. Kev haus dej tuaj yeem pab tshem tawm cov co toxins. 5. Txwv tsis pub koj haus kas fes lossis lwm yam dej qab zib uas muaj caffeinated, cov khoom ua kom zoo zoo li qab zib, khob cij dawb thiab mov dawb.Vitamin B6 (pyridoxine) supplementation thaum lub sij hawm kho isoniazid (INH) yog qhov tsim nyog rau qee cov neeg mob los tiv thaiv kev loj hlob ntawm peripheral neuropathy.

Q: Leej twg yuav tsum tsis txhob siv isoniazid?

A: Ua ntej siv cov tshuaj no, qhia koj tus kws kho mob lossis tus kws muag tshuaj koj li keeb kwm kev kho mob, tshwj xeeb tshaj yog ntawm: yav dhau los cov tshuaj tiv thaiv mob hnyav los ntawm isoniazid (xws li kab mob siab), kab mob siab, haus dej cawv, kab mob HIV, kab mob raum, mob ntshav qab zib, loog / tingling ntawm caj npab / ceg (peripheral neuropathy), kev yug menyuam tsis ntev los no.

Q: Puas yog isoniazid yog tshuaj txaus ntshai?

A: Kev kho mob nrog INH kev kho mob muaj kev pheej hmoo ntawm toxicity, uas tuaj yeem mob hnyav lossis mob ntev. Mob toxicity manifests li neurological tsos mob. Kev noj 2 g ntawm INH tuaj yeem ua rau tus neeg mob ua rau mob hnyav heev; Thaum mob toxicity feem ntau tshwm sim raws li hepatotoxicity thiab peripheral neuropathy.

Q: Yuav ua li cas isocyanate react nrog noo noo?

A: Cov dej noo yuav cuam tshuam nrog Isocyanate thiab tsim cov pa roj carbon dioxide. Txawm hais tias qhov no yuav yog qhov zoo tshaj plaws yog tias koj tab tom nrhiav los tsim ua npuas dej, feem ntau daim ntawv thov kev sib txuas los yog potting xav kom tsis txhob muaj cov tshuaj tiv thaiv no.Isocyanates yog esters ntawm isocyanic acid thiab thawj tus tswv cuab ntawm chav kawm ntawm cov tebchaw no tau npaj los ntawm Wurtz hauv 1848. Organic. isocyanates yog ib chav kawm txaus nyiam ntawm cov tebchaw, uas tau pom muaj ntau yam kev siv hauv cov organic synthesis.

Q: Koj puas tuaj yeem tsw qab isocyanates?

A: Isocyanates yog qhov txaus ntshai heev. Koj raug pom thaum koj nqus cov pa los yog tau txais cov tshuaj ntawm koj daim tawv nqaij (uas yuav nqus Isocyanates zoo li daim txhuam cev). Isocyanates tsis muaj ntxhiab tsw txawv, yog li koj tsis tuaj yeem siv koj qhov kev hnov tsw tsw los tiv thaiv koj. Cov hnab looj tes-pob looj tes yuav tsum yog rau cov khoom koj siv-ib zaug siv cov hnab looj tes uas siv tau los ntawm cov khoom tsim nyog (xws li nitrile) yog qhov zoo dua. Xyuas kom tseeb tias lub sij hawm tawg thiab qhov permeation yog haum rau hom thiab ntev ntawm kev ua haujlwm.

Q: Yuav ua li cas tom qab raug isocyanate?

A: Cov neeg ua haujlwm uas muaj feem cuam tshuam rau cov isocyanates uas muaj qhov muag tsis tu ncua lossis rov tshwm sim qhov muag, qhov ntswg congestion, qhuav lossis mob caj pas, cov tsos mob xws li mob khaub thuas, hnoos, ua tsis taus pa, hawb pob, lossis mob hauv siab yuav tsum mus ntsib kws kho mob paub txog kev ua haujlwm txog kev noj qab haus huv. .Qhov kev tshawb pom kuj txhawb kev soj ntsuam yav dhau los 7 tias cov tsos mob zoo li mob hawb pob thiab COPD zoo li cuam tshuam nrog isocyanate raug qib hauv cov neeg ua haujlwm raug rau feem ntau HDI oligomers hauv kev lag luam tshuaj pleev xim.

Peb paub zoo tias yog ib qho ntawm cov khoom siv tshuaj reagents manufacturers hauv Suav teb, tshwj xeeb hauv kev muab cov khoom siv tshuaj zoo. Thov so assured mus yuav tshuaj reagents ua nyob rau hauv Suav teb nov los ntawm peb lub hoobkas.