Ntsiab Lus Txhais

Ibalkanolamineyog ib qho kev sib xyaw ntawm cov qauv dav dav HO–(CH₂)ₙ–NRR′, qhov twg cov hydroxyl thiab amino pawg sib cais los ntawm tsawg kawg yog ib cov pa roj carbon. Cov molecule coj raws li lub hauv paus tsis muaj zog (pKa 9-10), ib tug nucleophile, thiab ib tug polar hnyav ib txhij.

Los ntawm -OH pab pawg

• Hydrogen bond pub dawb & txais
• High dej miscibility
• Tsawg vapor siab vs. plain amines
• Esterification reactivity

Los ntawm -N- pab pawg

• Lub cim tsis muaj zog (pH buffering)
• CO₂ thiab H₂S nqus
• Corrosion inhibition ntawm hlau nto
• Emulsification & deg kev ua haujlwm

CAS 141-43-5 · bp 171 degree

Cov qauv ntsuas CO₂ txhuam cov kuab tshuaj. High reactivity, zoo heev solubility dej. Siv dav hauv kev tshaj tawm -combustion capture thiab natural gas sweetening.

CAS 111-42-2 · bp 269 degree

Tsawg volatility dua MEA; nyiam rau xaiv H₂S nqus. Kuj tseem siv nyob rau hauv surfactant synthesis (cocamide DEA) thiab textile ua.

CAS 102-71-6 · bp 335 degree

Feem ntau siv cov cement sib tsoo pab. Accelerates thaum ntxov hydration ntawm C₃S. Kuj tseem muaj pH adjuster hauv tshuaj pleev ib ce thiab tshuaj pleev ib ce.

CAS 111-75-1 · bp 199 degree

Butyl saw nce lipophilicity. Siv rau hauv cov kua dej ua haujlwm hlau, cov pob khoom tiv thaiv corrosion, thiab kev kho roj thaum xav tau ib nrab dej immiscibility.

CAS 102-79-4 · bp 274 degree

Ob lub caj npab hydroxyethyl ntxiv rau ib pawg butyl. Combines siab kub taw tes nrog nruab nrab hauv paus. Haum rau cov lubricants tshwj xeeb thiab nto - nquag formulations.

CAS 108-01-0 · bp 135 degree

Tsawg boiling point enables yooj yim rov qab. Lub hauv paus muaj zog (pKa 9.2). Cov khoom tseem ceeb nyob rau hauv cov txheej txheem dej, tshuaj synthesis, thiab ammonia- cov tshuaj pleev xim plaub hau dawb.

CAS 100-37-8 · bp 162 degree

Me ntsis siab dua qhov kub ntawm DMEA; cov pawg diethyl loj dua txo qis me ntsis (pKa 8.9) tab sis txhim kho solubility hauv cov organic matrices. Dav siv los ua tus catalyst neutralizer nyob rau hauv polyurethane ua npuas ncauj, thiab raws li ib tug corrosion inhibitor nyob rau hauv chav condensate systems thiab boiler dej kho.

🏭 Gas Treatment & CO₂/H₂S Tshem Tawm

Cov tshuaj Alkanolamine (feem ntau 20–50 wt% hauv dej) yog cov kuab tshuaj tseem ceeb rau cov kua qaub kua qaub hauv kev ua cov pa roj carbon monoxide, refinery off-gas, thiab post-combustion CO₂ capture. Cov pab pawg amine reacts reversibly nrog CO₂ thiab H₂S; pawg hydroxyl khaws cov kuab tshuaj miscible nrog dej thiab tswj viscosity. MEA tseem yog cov kuab tshuaj siv; Kev sib xyaw ua ke siv DMEA lossis DEAE txo cov nqi rov tsim dua los ntawm 15-30%.

🏗️ Cement Grinding Aids & Concrete Admixtures

Tertiary alkanolamines (TEA, TIPA, DMEA, DEAE) yog siv ntawm 0.01-0.05 wt% ntawm clinker hauv cov cement sib tsoo. Lawv txo cov inter-particle adhesion (ua kom zoo dua ntawm cov khoom siv hluav taws xob qis), ua kom C₃S hydration, thiab txhim kho 28-hnub compressive zog. Cov pab pawg hydroxyl pab txhawb calcium ion complexation; lub tertiary amine ua raws li qhov chaw them nqi hloov pauv.

🧴 Personal Care & Cosmetics

Primary alkanolamines (MEA, cocamide MEA) neutralize fatty acids los tsim cov xab npum me me thiab kho tshuaj zawv plaub hau pH. Cov qib tertiary xws li DMEA tam sim no nyiam nyob rau hauv ammonia - dawb oxidative plaub hau xim - lawv o cov plaub hau cuticle yam tsis muaj pungent tsw ntawm ammonia thaum buffering tus tsim tawm pH ntawm 9-10. DEAE yog siv nyob rau hauv cov tshuaj thiab tshuaj pleev ib ce raws li ib tug me me alkalizing neeg sawv cev. Nco tseg: EU SCCS lub tswv yim txwv tsis pub lwm tus alkanolamines (DEA) nyob rau hauv so- ntawm cov khoom vim kev txhawj xeeb nitrosamine.

🔧 Metalworking Fluids & Corrosion Inhibitors

NBEA thiab BDEA muaj nuj nqis nyob rau hauv ib nrab- hluavtaws thiab soluble txiav cov roj rau lawv lub peev xwm los tiv thaiv cov dej txias pH siab tshaj 8.5 (inhibiting microbial kev loj hlob) thaum muab kev tiv thaiv me me ntawm ferrous thiab non{2}}ferrous hlau. Cov saw hlau butyl txhim kho lubricating zaj duab xis tenacity piv rau luv luv - chain homologues.

🎨 Coatings, Resins & Inks

DMEA yog qhov tseem ceeb neutralizing amine nyob rau hauv waterborne acrylic thiab epoxy txheej. Nws protonates carboxyl pawg ntawm cov pob txha pob txha, dispersing cov binder hauv dej; Thaum tsim cov yeeb yaj kiab, DMEA volatilizes (bp 135 degree) - tawm hauv cov yeeb yaj kiab uas muaj dej zoo dua piv rau siab dua - boiling lwm yam xws li AMP lossis TEA.

⚗️ Chemical Synthesis & Pharmaceutical Intermediates

Alkanolamines ua lub tsev thaiv rau choline analogs, tshuaj ntsev (xws li, DEAE-dextran rau kev xa cov noob), chelating agents, thiab titanate coupling agents. DMEA yog ib qho tseem ceeb nruab nrab ntawm cov synthesis ntawm choline chloride. NBEA yog ib qho ua ntej rau butyl- hloov morpholine derivatives siv los tiv thaiv qoob loo.

Cia

Khaws rau hauv cov thawv kaw kom nruj, kom deb ntawm cov kua qaub uas muaj zog thiab oxidizing cov neeg ua haujlwm. Tsis txhob carbon steel rau DEA / BDEA ntawm qhov kub thiab txias (kev pheej hmoo ntawm kev puas tsuaj). Cov khoom pom zoo: stainless hlau 304/316 lossis HDPE.

PPE cov cai

Tshuaj-cov hnab looj tes tiv thaiv (nitrile lossis neoprene), tsom iav kev nyab xeeb nrog cov ntaub thaiv sab nraud, thiab muaj cua txaus. Rau tertiary amines (DMEA), nco ntsoov qhov qis qis (43 degree) - tshem tawm qhov hluav taws xob thaum tuav cov khoom ntau.

REACH & GHS kev faib tawm

Tag nrho cov alkanolamines loj yog ua ntej- sau npe lossis sau npe hauv EU REACH. GHS kev faib tawm feem ntau suav nrog Cov Tox Mob hnyav. 4 (qhov ncauj/dermal), Skin Corr. 1B, thiab Qhov muag Dam. 1 rau thawj amines. Cov qib kawm thib peb (DMEA, DEAE) nqa Flam ntxiv. Liq. 3 npe.

Ib puag ncig

Kev Noj Qab Haus Huv Canada Kev Ntsuam Xyuas Kev Ntsuam Xyuas (2013) tau xaus lus tias alkanolamines tsis muaj kev phom sij rau ib puag ncig ntawm qhov kev cia siab raug pom. Biodegradation yog nruab nrab; dej toxicity yog tsawg mus rau nruab nrab nyob ntawm cov saw ntev. Tsis txhob tso cov tshuaj concentrated rau hauv dej saum npoo av.

Q: Dab tsi yog qhov txawv ntawm alkanolamine thiab amino acid?

Ob leeg muaj amine thiab cov pa oxygen - pawg kabmob. Txawm li cas los xij, amino acids nqa ib pawg carboxyl (-COOH), ua rau lawv amphoteric (ob leeg acidic thiab yooj yim). Alkanolamines nqa hydroxyl (–OH), ua rau lawv yooj yim (lossis nruab nrab). Alkanolamines tsis tsim peptide bonds thiab tsis tshwm sim hauv cov proteins.

Q: Puas yog alkanolamines muaj kev nyab xeeb hauv cov khoom siv plaub hau?

Tertiary alkanolamines (DMEA, DEAE, TEA) feem ntau suav hais tias muaj kev nyab xeeb rau daim ntawv thov kev tu plaub hau los ntawm EU SCCS ntawm qib tso cai siv. Secondary alkanolamines (DEA, cocamide DEA) yuav raug siv cov kev txwv hauv kev tawm mus - ntawm cov tshuaj pleev ib ce hauv EU vim muaj peev xwm tsim nitrosamine. Ib txwm xa mus rau SCCS lub tswv yim tam sim no rau koj qhov kev tsim tshwj xeeb.

Q: Cov alkanolamines puas tuaj yeem nqus CO₂ los ntawm huab cua ntawm chav tsev kub?

Yog - thawj thiab theem nrab alkanolamines yuav maj mam nqus pa hauv CO₂ lub sijhawm, tsim cov carbonate lossis carbamate ntsev. Qhov no yog vim li cas cov thawv ntim ntau yuav tsum tau muab kaw. Nyob rau hauv kev lag luam scrubbers, cov nyhuv no yog txhob txwm thiab cov kev daws teeb meem yog regenerated los ntawm cua sov mus rau 100-120℃tso CO₂ thiab recycle cov kuab tshuaj.

Q: Dab tsi yog qhov purity qib rau industrial vs. kws tshuaj alkanolamines?

Cov qib kev lag luam feem ntau yog ntau dua lossis sib npaug li 98-99% purity nrog cov dej tswj cov ntsiab lus. Pharmaceutical and cosmetic-qib specifications kuj yuav tsum tau txwv rau cov hlau hnyav (Pb, As, Hg), xim (APHA<20), and specific impurities. Sinolook Chemical supplies both industrial and cosmetic-grade variants with full CoA on request.

Q: Dab tsi alkanolamine yog qhov zoo tshaj plaws rau cov txheej txheem dej tsis zoo?

DMEA (dimethylethanolamine) yog cov feem ntau siv neutralizing amine nyob rau hauv waterborne acrylic coatings vim nws qhov zoo sib npaug ntawm qhov yooj yim (pKa 9.2), ceev neutralization kinetics, thiab tsis tshua muaj ntxhiab tsw tom qab ci. AMP-95 (2-amino-2-methyl-1-propanol) yog qhov xav tau thaum xav tau dej ntau dua hauv cov yeeb yaj kiab kho. TEA qee zaum siv rau hauv qis-ci lossis ambient-kho tshuab tab sis tawm cov ntsiab lus ntau dua.