📋 Hauv kab lus no
- Fatty Acid Alkanolamides yog dab tsi?
- Chemistry: DEA vs MEA - Dab tsi Cov Qauv Qhia Koj
- Kev sib piv kev ua haujlwm: Ua npuas ncauj, viscosity, thiab ruaj khov
- Kev nyab xeeb & kev tswj hwm xwm txheej
- Kev siv los ntawm Hom Khoom
- Yuav Xaiv Li Cas: DEA lossis MEA?
- Formulation Tips thiab Hom Kev Siv Qib
- Quality Specifications thiab Sourcing
- FAQ
- Hu rau Sinolook Chemical
🥥 1. Fatty Acid Alkanolamides yog dab tsi?
Fatty acid alkanolamides yog ib chav kawm ntawm cov tsis yog -ionic surfactants tsim los ntawm cov tshuaj tiv thaiv condensation ntawm fatty acid (los yog fatty acid methyl ester) nrog ib qho alkanolamine. Cov roj fatty acid feem ntau yog cov txiv maj phaub roj los yog cov txiv maj phaub roj, uas muab cov khoom sib xyaw ntawm nruab nrab - chain fatty acids dominated los ntawm lauric acid (C12). Cov alkanolamine tuaj yeem yog diethanolamine (DEA) lossis monoethanolamine (MEA), yieldingCocamide DEAlos yogCocamide MEAraws.
Ob qho molecules ua haujlwm liua npuas ncauj boosters, ua npuas ncauj stabilizers, thiabviscosity buildersnyob rau hauv aqueous surfactant systems. Lawv tsis yog thawj surfactants - lawv tsis tsim ua npuas ncauj rau lawv tus kheej - tab sis thaum ntxiv rau anionic surfactant bases (sodium lauryl sulfate, sodium laureth sulfate, thiab lwm yam) ntawm 1-5%, lawv tau txhim kho cov tawv nqaij zoo thiab cov tshuaj viscosity.
💡 Vim li cas Alkanolamine Choice Matters
DEA (diethanolamine) nqaobhydroxyethyl pawg; MEA (monoethanolamine) nqaib. Qhov zoo li qhov sib txawv me me no ua rau muaj kev sib txawv loj hauv kev solubility, ua npuas ncauj, cov lus teb viscosity, kev ruaj ntseg profile, thiab kev tswj hwm kev lag luam thoob ntiaj teb.
⚗️ 2. Chemistry: DEA vs MEA - Dab tsi Cov Qauv Qhia Koj
Ob lub molecules sib koom cov txiv maj phaub fatty acid saw (feem ntau C12 lauric, C14 myristic) txuas los ntawm ib daim ntawv cog lus amide rau lawv cov pob txha amine. Cov txheej txheem tseem ceeb sib txawv yog nyob rau hauv cov khoom siv nitrogen:
Cocamide DEA
R–CO–N(CH₂CH₂OH)₂
- CAS: 68603-42-9 Nr
- Ob -CH₂CH₂OH pawg ntawm nitrogen
- Ua kua ntawm chav tsev kub
- Molecular hnyav (~ 320-360 g / mol)
- Solubility zoo dua nyob rau hauv siab -electrolyte systems
- Kuj tseem hu ua: CDEA, txiv maj phaub diethanolamide
Cocamide MEA
R–CO–NH–CH₂CH₂OH
- CAS: 68140-00-1 Nr
- Ib pawg -CH₂CH₂OH ntawm nitrogen
- Khoom / waxy ntawm chav tsev kub (mp ~ 60-70 degree)
- Tsawg molecular hnyav (~ 295-330 g / mol)
- Ua npuas ncauj zoo dua ntawm pH qis
- Kuj tseem hu ua: CMEA, txiv maj phaub monoethanolamide
| Khoom | Cocamide DEA | Cocamide MEA |
|---|---|---|
| CAS Nr | 68603-42-9 | 68140-00-1 |
| INCI npe | Cocamide DEA | Cocamide MEA |
| Lub cev lub cev (25 degree) | Kua / viscous | Khoom / waxy |
| Nitrogen Substituents | Ob pawg -CH₂CH₂OH | Ib pawg -CH₂CH₂OH |
| Active Cov ntsiab lus (tus qauv) | ~ 85-90% (sib npaug yog dawb DEA + dej) | ~ 95-99% (tsis tshua muaj amine dawb) |
| Ua npuas ncauj ntim | Zoo - nplua nuj, creamy lather | Zoo heev - denser, ntau ruaj khov ua npuas ncauj |
| Lub tsev viscosity | Ua tau zoo heev hauv cov ntsev -cov kab mob SLES tuab | Tsawg dua hauv siab - ntsev tshuab |
| Qhov zoo tshaj pH Range | 6.5–8.0 | 5.5-7.5 (zoo dua ntawm pH qis) |
| Cov ntsiab lus Amine dawb | Siab dua (qhov seem DEA yog kev txhawj xeeb) | Lower (MEA tsawg reactive) |
| Nitrosamine Formation Risk | ⚠️ Siab dua (tso tseg hauv EU) | ✅ Tsawg qhov kev pheej hmoo |
| EU Cosmetic Regulation | Txwv - Tsawg dua lossis sib npaug li 5%, tsis muaj cov tshuaj nitrosating | Tso cai tsis muaj kev txwv tshwj xeeb |
| Kev ua kom yooj yim | ✅ Yooj yim - kua, pumped ncaj qha | ⚠️ Yuav tsum tau yaj ua ntej ntxiv |
| Hom Kev Siv Qib | 1–5% w/w | 1–3% w/w |
| Tus nqi txheeb ze | Tsawg (khoom muag, dav muaj) | Me ntsis siab dua |
🔬 3. Kev sib piv kev ua haujlwm: Ua npuas ncauj, Viscosity, thiab ruaj khov
3.1 Ua npuas ncauj Boosting
Ob leeg alkanolamides txhawb cov npuas dej hauv cov tshuab surfactant, tab sis lawv ua li ntawd los ntawm cov txheej txheem sib txawv me ntsis thiab xa cov npuas sib txawv.Cocamide DEAua kom muaj nplua nuj, creamy, loj - npuas npuas zoo- haum rau cov tshuaj zawv plaub hau thiab ntxuav lub cev uas qhov kev paub zoo tshaj plaws yog qhov tseem ceeb.Cocamide MEAgenerates a denser, finer-bubble, more stable foam - often preferred in conditioning shampoos, bar soaps, and formulations where long-lasting foam persistence is more important than initial volume.
Cov npuas dej- txhawb nqa mechanism nyob rau hauv ob qho tib si muaj kev koom ua ke rau hauv cov qauv surfactant micelle ntawm cov roj- dej interface. The amide carbonyl and hydroxyl groups increase the packing density of surfactant molecules at bubble surfaces, reducing drainage rate and extending foam lifetime.
3.2 Viscosity Building
Qhov no yog qhov twg Cocamide DEA tuav qhov kev ua tau zoo ntawm cov tshuaj zawv plaub hau thiab lub cev ntxuav feem ntau. Cocamide DEA ua tau zoo heev ntawm kev tsim viscosity hauv tus qauvSLES (sodium laureth sulfate) + ntsev thickeningqhov system. Vim tias nws yog cov kua dej ntawm chav tsev kub, nws tuaj yeem ntxiv ncaj qha rau lub hauv paus surfactant nrog cua sov tsawg, thiab NaCl concentration tuaj yeem hloov kho kom ua tiav lub hom phiaj viscosity zoo.
Cocamide MEA's viscosity-cov nyhuv hauv tsev tsis tshua muaj suab nrov hauv siab -electrolyte systems. Nws lub xeev ruaj khov ntawm chav tsev kub kuj yuav tsum tau ua ntej - cov kauj ruam yaj (feem ntau cua sov rau ~ 70-80℃) ua ntej nws tuaj yeem muab tso ua ke - ntxiv cov txheej txheem uas ntau tus tsim qauv xav kom zam hauv cov txheej txheem yooj yim. Txawm li cas los xij, hauv qis- ntsev los yog ntsev- cov qauv dawb, MEA tuaj yeem muab qhov sib npaug lossis zoo dua thickening.
💡 Cov Lus Ceeb Toom Txog Kev Ua Haujlwm viscosity
In a typical 12% SLES shampoo base, adding 2% Cocamide DEA and then titrating NaCl from 0.5% to 2% can raise Brookfield viscosity (20 rpm, 25 °C) from ~500 mPa·s to >8,000 mPa·s. Qhov no yog txoj kev siv ntau tshaj plaws rau cov tshuaj zawv plaub hau thoob ntiaj teb, thiab Cocamide DEA yog qhov kev ntseeg siab tshaj plaws alkanolamide rau lub hom phiaj no.
3.3 Kev Kho Hniav thiab tawv nqaij
Ob leeg alkanolamides pab ua kom lub zog me me - lawv txo qhov hnyav ntawm anionic surfactant systems thiab tawm ntawm daim tawv nqaij thiab plaub hau softer tom qab yaug. Cocamide MEA feem ntau suav hais tias yog muab cov kev xav zoo dua me ntsis, tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov kev tu plaub hau, vim tias nws cov qauv molecular ntau dua ua ke zoo dua nrog cov plaub hau lipids. Qhov no yog ib qho laj thawj MEA tseem yog qhov kev xaiv zoo tshaj plaws hauv cov tshuaj zawv plaub hau txawm hais tias nws txoj kev tuav tsis yooj yim.
🛡️ 4. Kev Nyab Xeeb & Kev Tswj Xyuas Txheej Txheem
Kev nyab xeeb yog qhov sib txawv ntawm kev lag luam feem ntau ntawm Cocamide DEA thiab Cocamide MEA, thiab nws yog qhov laj thawj tseem ceeb ntau tus tsim qauv - tshwj xeeb tshaj yog cov phiaj xwm EU, California, lossis "kev zoo nkauj huv" kev lag luam - tau tsiv tawm ntawm DEA mus rau MEA lossis lwm yam ua npuas ncauj boosters.
4.1 Nitrosamine Formation - Kev txhawj xeeb ntawm DEA
Qhov kev txhawj xeeb tseem ceeb ntawm kev nyab xeeb nrog Cocamide DEA yog nws lub peev xwm los tsimN-Nitrosodiethanolamine (NDELA)- ib nitrosamine thiab tej zaum tib neeg carcinogen - thaum nws reacts nrog nitrosating agents (nitrogen oxides, nitrite preservatives, los yog lwm yam Secondary amines - muaj cov khoom xyaw) nyob rau hauv ib tug formulation los yog thaum lub sij hawm cia.
Cov tshuaj tiv thaiv no xav tau:
- Dawb DEA tam sim no nyob rau hauv cov khoom (residual unreacted amine los ntawm cov synthesis)
- Tus neeg sawv cev nitrosating hauv kev tsim qauv (xws li, sodium nitrite ua cov tshuaj tiv thaiv corrosion, qee yam tshuaj tua kab mob, lossis DEA- muaj cov ntaub ntawv nyoos raug huab cua)
- me ntsis acidic pH (<6.5), which accelerates the reaction
Cocamide MEA, muab los ntawm monoethanolamine (ib qho tseem ceeb amine), tsis yooj yim tsim nitrosamines vim hais tias thawj amines tsis ua raws li N-nitrosation cov tshuaj tiv thaiv kab mob raws li cov amines theem nrab xws li DEA. Qhov no yog qhov sib txawv ntawm cov tshuaj lom neeg, tsis yog kev tsim khoom cuav.
⚠️ Regulatory Summary by Market
| Kev ua lag luam | Cocamide DEA Status | Cocamide MEA Status |
|---|---|---|
| EU (Kev Cai Tshuaj Txhuam Hniav EC 1223/2009) | Txwv: max 5%; tsis tuaj yeem siv nrog cov tshuaj nitrosating; yuav tsum tau kuaj nitrosamine- | Tso cai; tsis muaj kev txwv tshwj xeeb |
| California (Prop 65) | Cocamide DEA npe hu ua carcinogen (2012); cov khoom xav tau Prop 65 ceeb toom yog tias siab tshaj qhov pib | Tsis teev |
| USA (FDA / CIR) | CIR: muaj kev nyab xeeb tsawg dua lossis sib npaug li 10% yog tias tsim los tiv thaiv kev tsim nitrosamine; FDA tsis txwv tab sis pom zoo kom ceev faj | CIR: nyab xeeb raws li siv |
| Tuam Tshoj (GB qauv) | Tso cai; GB / T 26396 qhia txog nitrosamine txwv hauv tshuaj pleev ib ce | Tso cai |
| "Clean Beauty" / EWG | EWG qhab nia 5–7 (mob nruab nrab-siab txaus ntshai); chij los ntawm cov qauv kev zoo nkauj huv feem ntau | EWG qhab nia 1–2; txais tau raws li tus qauv huv feem ntau |
4.2 Daim tawv nqaij Irritation thiab Sensitization
Ntawm cov qib kev siv tshuaj (1–5%), Cocamide DEA thiab Cocamide MEA muaj peev xwm ua rau tawv nqaij qis. CIR Kws Tshaj Lij Vaj Huam Sib Luag thiab EU Pawg Neeg Saib Xyuas Kev Nyab Xeeb ntawm Cov Neeg Siv Khoom (SCCS) tau soj ntsuam ob qho tib si thiab pom tias lawv tsis yog- khaus khaus hauv qhov zoo- cov khoom tiav lawm. Tsis yog ib tug paub txog daim tawv nqaij sensitizer ntawm ib txwm cosmetic concentrations.
Qhov tseem ceeb tshaj kev nyab xeeb hloov pauv tsis yog khaus tab sisdawb amine cov ntsiab lus. Siab - zoo Cocamide DEA nrog qis residual dawb DEA (<1%) poses substantially lower nitrosamine formation risk than low-grade material with 3–5% free DEA. This makes supplier selection and CoA verification critical - not just ingredient choice.
🏭 5. Kev siv los ntawm Hom Khoom
🧴 Shampoos
Qib nyiam: Cocamide DEA
- 2–4% hauv SLES-raws li tshuab rau viscosity thiab ua npuas ncauj
- Creamy lather nyiam los ntawm cov neeg siv khoom feem ntau
- MEA siv nyob rau hauv txias / me ntsis - tsom variants
- Nco tseg: EU tshuaj zawv plaub hau nce siv MEA lossis lwm yam
🚿 Lub Cev Ntxuav & Da Dej Gel
Qib nyiam: Cocamide DEA
- 1-3% rau viscosity tsev thiab ua npuas ncauj stabilization
- Ua haujlwm zoo hauv amphoteric + anionic surfactant blends
- MEA tau txiav txim siab rau qhov rhiab - daim tawv nqaij qhov chaw
🧼 Liquid Hand Soaps
Ob qib siv
- DEA rau tus nqi- cov xab npum ntim tau zoo
- MEA rau cov tshuaj tua kab mob thiab cov tshuaj tshwj xeeb
- Feem ntau 1-2% siv qib
💆 Tshuaj zawv plaub hau & 2-hauv-1
Qib nyiam: Cocamide MEA
- MEA qhov kev ua kom zoo tshaj plaws xav tias haum rau 2-hauv-1 hom ntawv
- Kev ua tau zoo dua hauv cationic - cov tshuab txias txias
- Ua npuas ncauj ntau ua ke nrog kev txias - tsuaj zawv plaub hau
🔧 Industrial Cleaning
Qib nyiam: Cocamide DEA
- 2–5% nyob rau hauv tawv- cov tshuaj ntxuav thiab degreasers
- Metalworking kua ua npuas ncauj stabilization
- Tsis muaj kev cai txwv kev txhawj xeeb hauv cov ntsiab lus ntawm kev lag luam
🌿Natural / Clean Beauty
Qib Nyiam: Cocamide MEA (los yog lwm txoj hauv kev)
- MEA tau txais EWG thiab COSMOS zoo dua
- DEA feem ntau tsis suav nrog cov khoom "huv" / "natural" ntawv pov thawj
- Lwm txoj hauv kev: decyl glucoside, coco glucoside, babassuamide DEA
🎯 6. Yuav Xaiv Li Cas: DEA lossis MEA?
Qhov kev txiav txim siab ntawm Cocamide DEA thiab Cocamide MEA kawg yog nyob ntawm peb yam:phiaj khw, formulation system, thiabmanufacturing txheej txheem muaj peev xwm. Siv lub moj khaum hauv qab no raws li koj qhov chaw pib:
🧪 7. Cov lus qhia txog kev tsim thiab qib kev siv tib yam
7.1 Standard Shampoo System nrog Cocamide DEA
| Cov khoom xyaw | % w/w | Muaj nuj nqi |
|---|---|---|
| Sodium Laureth Sulfate (SLES 70%) | 15–18% | Thawj surfactant, detergency |
| Cocamide DEA | 2–3% | Ua npuas ncauj booster, viscosity builder |
| Cocamidopropyl Betaine (CAPB 30%) | 3–5% | Mildness, theem nrab ua npuas ncauj, antistatic |
| NaCl (ntsev) | 0.5–2% | Kev hloov kho viscosity (titrate rau lub hom phiaj) |
| Preservative (piv txwv li, phenoxyethanol) | 0.5–1% | Antimicrobial preservation - yuav tsum tsis yog -nitrosating |
| Cov tshuaj tsw qab, citric acid, dej | qs rau 100% | pH hloov mus rau 5.5-6.5; tshuaj tsw qab raws li xav tau |
⚠️ Yog tias siv Cocamide DEA: Kev xaiv khaws cia yog qhov tseem ceeb
Tsis txhob muab Cocamide DEA nrog nitrosating preservatives xws li bronopol (2-bromo-2-nitropropane-1,3-diol), sodium nitrite, los yog tej yam formaldehyde-tso preservatives. Cov kev sib txuas no txhawb nqa kev tsim NDELA. Cov kev xaiv muaj kev nyab xeeb muaj xws li phenoxyethanol + ethylhexylglycerin, sodium benzoate + potassium sorbate, los yog parabens (raws li qib).
7.2 Ntxiv Cocamide MEA rau Kub-Cov Txheej Txheem Txheej Txheem
Vim tias Cocamide MEA melts ntawm kwv yees li 60-70 degree, nws yuav tsum tau muab ntxiv rau hauv cov khoom ntawm qhov kub siab. Tus txheej txheem yog kom sov lub aqueous surfactant theem mus rau 70-75 degree, ntxiv MEA flakes los yog pellets nrog agitation, paub meej tias tiav dissolution (lub batch yuav tsum tau meej thiab homogeneous), ces ua mus ntxiv. Kev sim ntxiv cov khoom MEA rau hauv ib lub thawv txias yuav ua rau cov pob zeb ntab ntab uas nyuaj rau tawg.
📊 8. Cov Lus Qhia Zoo thiab Kev Pabcuam
| Parameter | Cocamide DEA | Cocamide MEA |
|---|---|---|
| Cov ntsiab lus nquag | Ntau dua lossis sib npaug li 85% | Ntau dua lossis sib npaug li 95% |
| Cov ntsiab lus Amine dawb | Tsawg dua lossis sib npaug li 2.0% (tsawg DEA tseem ceeb) | Tsawg dua lossis sib npaug li 1.0% |
| Xim (Gardner) | Tsawg dua los yog sib npaug li 5 | Tsawg dua los yog sib npaug li 4 |
| pH (10% aqueous tov) | 9.0–11.0 | 8.5–10.5 |
| Moisture / dej ntsiab lus | Tsawg dua lossis sib npaug li 3.0% | Tsawg dua lossis sib npaug li 1.0% |
| Hnyav Hlau | Tsawg dua lossis sib npaug li 10 ppm | Tsawg dua lossis sib npaug li 10 ppm |
| NDELA (nitrosamine) | Tsawg dua los yog sib npaug rau 50 ppb (EU yuav tsum tau) | Feem ntau tsis tau teev tseg |
✅ Supplier Checklist for Cocamide DEA/MEA
- ✅ Batch CoA muab rau txhua qhov khoom xa tuaj nrog cov ntaub ntawv amine dawb?
- ✅ Rau DEA: NDELA xeem tau muaj (EU khoom tshwj xeeb)?
- ✅ Feedstock traceable - zaub ( txiv maj phaub / xibtes kernel) roj keeb kwm paub tseeb?
- ✅ REACH sau npe siv tau rau EU xa khoom?
- ✅ ISO 9001 manufacturing certification nyob rau hauv qhov chaw?
- ✅ Ntim: nruas (180 kg), IBCs (1,000 kg) muaj?
- ✅ Cov qauv muaj (1-5 kg) rau kev sim tshuaj?
❓ 9. Cov lus nug uas nquag nug
📦 Tau qhov twg los Cocamide DEA los ntawm Sinolook Chemical
Sinolook Chemical khoom siv Cocamide DEA (txiv maj phaub diethanolamide, CDEA) hauv cov qauv thiab qis - dawb-DEA qib, nrog rau cov ntaub ntawv tag nrho suav nrog cov ntawv xeem CoA, NDELA, MSDS, REACH dossiers, thiab HS code tshaj tawm. Yam tsawg kawg nkaus 200 kg; coj mus kuaj kom muaj nuj nqis rau formulation sim.
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