Lubricant Additives - Phenolic Antioxidants Series:BHT (2,6-Di-tert-butyl-}p-cresol) yog lub hauv pauscuam tshuam phenolic antioxidantnyob rau hauv Sinolook catalog - feem ntau siv cov thawj antioxidant nyob rau hauv lub ntiaj teb no hla lubricants, polymers, fuels, roj hmab, thiab zaub mov daim ntaub ntawv. Tsis zoo li ZDDP (ib qho tshuaj tiv thaiv kab mob thib ob uas decomposes hydroperoxides) lossis amine antioxidants (uas kuj tshem tawm cov radicals tab sis tsim cov xim los ntawm - khoom), BHT yog ib qhontshiab dawb-radical saw- txiav phenol: tag nrho cov xim tsis muaj xim, hlau-dawb, sulphur-dawb, phosphorus-dawb, thiab tshauv-dawb. Zero SAPS pab. Kev sib koom ua ke ncaj qha nrog ZDDP (ua tiav thawj zaug + theem nrab AO mechanisms). Cov khoom dawb crystalline flakes, purity Ntau dua los yog sib npaug li 99.0%, multi-kev lag luam (lubricants · polymers · fuels · food · cosmetic). Sinolook Phenolic AO series:BHT (this) · L01 · L57 · lwm yam phenols hindered.
✅ SAPS-Free (Zero Ash · Zero S · Zero P) · Primary Antioxidant · Dawb-Radical Chain Terminator · Hindered Phenol · Khoom Dawb Flakes/Powder · Purity Ntau dua lossis sib npaug li 99.0% · Multi-Kev Lag Luam · Lubricants · Polymers
2,6-Di-tert-butyl-p-cresol (BHT)
Butylated Hydroxytoluene / BHT / 2,6-Di-tert-butyl-4-methylphenol / DTBPC / 2,6-Di-tert-butyl-p-cresol / CAS 128-37-0 / C₅W / C₅W 220.35 / Purity Ntau dua lossis sib npaug li 99.0%
| CAS Nr | 128-37-0 |
| Molecular Formula | C₁₅H₂₄O · MW 220.35 g/mol |
| Qauv | 4-methyl-2,6-di-tert-butylphenol - phenol nplhaib nrog: (1) -OH ntawm C1 (qhov chaw ua haujlwm antioxidant); (2) -CH₃ ntawm C4 (para, "cresol" methyl pawg); (3) -C (CH₃)₃ ntawm C2 thiab C6 (ortho txoj haujlwm, ob pawg steric-hindrance tert-butyl). Ob lub ortho tert-butyls muab qhov tseem ceeb steric shielding ntawm phenoxy radical, slowing nws cov tshuaj tiv thaiv ntxiv thiab ua rau kev ua tau zoo ntawm AO. |
| Synonyms | BHT · Butylated hydroxytoluene · DTBPC · 2,6-Di-tert-butyl-4-methylphenol · Ionol · Topanol O · Antioxidant 264 · E321 (EU khoom noj khoom haus additive code) · 2}6-butyl-p-2 |
| ★ SAPS xwm txheej | ✅ ZERO ash / sulfur / phosphorus / hlau
BHT tsuas muaj C, H, O - tsis muaj Zn, Ca, Mg, P, S, N lossis lwm yam heteroatom. Pab txhawb xoom SAPS, xoom catalyst- lom cov ntsiab lus, xoom DPF/GPF- thauj cov tshauv. Ua tiav nrog tag nrho ACEA C1-C5, API SP, API CK-4 / FA-4 SAPS txwv ntawm txhua tus nqi kho mob. |
| Qhov tshwm sim | Dawb crystalline hmoov los yog flakes Cov yam ntxwv faint phenolic tsw; melting point 69-72 degree; khoom ntawm ambient, kua saum toj no ~ 70 degree; tsis yog -corrosive; tsawg aqueous solubility; soluble heev nyob rau hauv hydrocarbon solvents thiab ntxhia / hluavtaws roj. |
| Purity / Qib | Muaj ntau dua lossis sib npaug li 99.0% Siab -purity Ntau dua lossis sib npaug rau 99.5% (ntawm kev thov) |
BHT yog dab tsi & Yuav ua li cas cuam tshuam Phenol Mechanism ua haujlwm?
BHT (2,6-Di-tert-butyl-p-cresol)yog tus qauv ntsuascuam tshuam phenolic antioxidant- ib qho tseem ceeb tshaj plaws kev lag luam ib leeg -phenol antioxidant compound thoob ntiaj teb, nrog rau kev noj cov roj nplua nyeem, plastics, zaub mov, roj, thiab tshuaj pleev ib ce. Nws txoj kev lag luam zoo tshaj plaws yog cov hauv paus hauv peb lub zog: qhov ua tau zoo tshaj plaws pub dawb-radical saw- qhov kev txiav tawm, kev ua kom muaj txiaj ntsig zoo thiab kev tswj hwm cov ntaub ntawv (xws li zaub mov- ntxiv kev pom zoo raws li EU E321 thiab FDA 21 CFR 172.185), thiab qhov yooj yim, zoo dua los yog sib npaug ntawm {9} 99% ntshiab, dawb crystalline khoom ntawm kev sib tw nqi.
Cov tshuaj tiv thaiv antioxidant ntawm BHT ua haujlwm ua ib qhothawj antioxidant (Chain-Breaking Donor, CB-D): phenolic O-H daim ntawv cog lus pub ib lub atom hydrogen rau peroxyl radical (ROO•) tsim thaum lub sij hawm hydrocarbon oxidation, cuam tshuam cov saw - kauj ruam nthuav tawm. BHT- muab phenoxy radical (BHT–O•) stabilized los ntawm ob flanking tert -butyl pawg ntawm txoj hauj lwm 2 thiab 6 - lawv cov steric bulk tiv thaiv cov phenoxy radical los ntawm kev koom nrog hauv cov saw txuas ntxiv - tawm kev tawm tsam ntawm lwm yam kev tawm tsam (radical lipids, ntxiv rau qhov sib ntxiv ntawm cov diam diluted nrog lwm cov tshuaj tiv thaiv kab mob. radicals), ua haujlwm zoo li "radical dab dej." Lub stabilized BHT–O• nws thiaj li muaj kev cuam tshuam qeeb qeeb (coupling, disproportionation) rau inert quinone-methide cov khoom, regenerating tsis muaj saw - nqa radicals. Cov txiaj ntsig tau txais txiaj ntsig yog kev noj ntawm ib qho BHT molecule los txiav ib lub oxidation saw - tab sis vim hais tias txhua txoj saw yuav nqa ntau pua lub voj voog oxidation, cov molar efficiency ntawm BHT ib chav tsev loj yog tshwj xeeb.
Hom phiaj:Peroxyl radicals (ROO•) thiab alkyl radicals (R•) - cov saw - nqa hom hauv oxidation
Mechanism:H-Atom pub dawb (HAT) los ntawm phenolic O–H:BHT–OH + ROO• → BHT–O• + ROOH. Chain propagation kauj ruam cuam tshuam.
Kev txwv:Tsis rhuav tshem hydroperoxides (ROOH) twb tsim - cov no sib sau ua ke thiab tom qab ntawd decompose thermally/catalytically los tsim cov radicals tshiab, re- pib oxidation chains.
Hom phiaj:Hydroperoxides (ROOH) - oxidation intermediate uas BHT tsim thiab uas accumulates yog unchecked
Mechanism:Redox decomposition ntawm ROOH los ntawm ZDDP's P=S/P–S pawg:ROOH + ZDDP → ROH + oxidised ZDDP fragment. ROOH rhuav tshem ua ntej nws tuaj yeem thermally / catalytically tsim cov dawb radicals tshiab.
Kev txwv:Tsis ncaj qha scavenge dawb radicals - ineffective li ib leeg AO thaum lub sij hawm radical - saw - propagation theem.
BHT txiav tawm active radicals (ROO•) → tsim ROOH. ZDDP rhuav tshem ROOH ua ntej nws rov- pib cov saw tshiab. Ua ke, lawv cuam tshuam oxidation ntawmob leegKev nthuav qhia theem (BHT)thiabthawj kauj ruam (ZDDP). Cov nyhuv synergistic txhais tau hais tias ob qho tib si ua tau zoo ib leeg ntawm tib tus nqi kho mob ntxiv - zoo-cov ntaub ntawv sau tseg hauv ASTM Sequence IIIGH thiab RULER (Tseem Tseem Ceeb Lub Neej Ntsuas los ntawm Voltammetry) kev tshawb fawb depletion. Qhov piv yog kev tsim- tshwj xeeb: cov qauv lubricant raug siv BHT 0.2–0.5% + ZDDP 0.8–1.2% rau kev sib npaug. Rau cov roj uas xav tau xoom-SAPS (ACEA C1, ultra-low P), BHT tuaj yeem ua ke nrog amine antioxidants (tseem SAPS{14}}dawb) es tsis txhob ZDDP los muab cov radical-scavenging + hydroperoxide-decomposing functions yam tsis muaj P/S.
Lo lus "hindered phenol" yog hais txog steric bulk flanking pawg O-H. Hauv BHT, ob pawg tert-butyl pawg ntawm txoj haujlwm 2 thiab 6 (ortho mus rau -OH) tsim peb lub cev - qhov ntev ntawm steric tiv thaiv ib puag ncig O-H oxygen. Cov qauv no muaj ob qhov txiaj ntsig tseem ceeb:
Unhindered phenols react sai nrog ROO• - thawj H- pub dawb yog ceev, tab sis cov phenoxy radical nws tus kheej kuj reactive thiab tau noj sai heev. Nrog BHT, tert -butyl pawg qeeb tus nqi ntawm phenoxy radical noj, txhais tau hais tias txhua BHT molecule tseem siv tau ntev dua ua ntej noj irreversibly. Hauv kev xeem RULER voltammetry, BHT hauv cov roj formulated depletes ntau pua lub sijhawm ua haujlwm ntau dua li kaum.
Unhindered phenoxy radicals (ArO•) tuaj yeem cuam tshuam nrog cov saw hlau polymer lossis lwm cov lipid molecules los ua cross-txuas tes hauj lwm - ua rau cov kua roj vanish, sludge, lossis polymer embrittlement. BHT's phenoxy radical tsis tuaj yeem mus ze rau lwm cov molecules ze txaus rau qhov no (steric cais), yog li nws tsuas yog qeeb, ntxuav kev txiav txim siab (dimerisation rau stilbenequinone). Tsis muaj kua roj vanish- ua intermediates generated.
Kev sib piv Molecular:phenol yooj yim (tsis muaj kev cuam tshuam) muaj O-H BDE (lub zog sib koom ua ke) ntawm ~ 88 kcal / mol; BHT's O–H BDE raug txo rau ~ 78 kcal / mol los ntawm tert-butyl electron- pub cov nyhuv inductive - ua rau H pub dawb rau ROO• thermodynamically nyiam dua, thaum lub steric bulk ib txhij suppresses phenoxy radical reactivity. Qhov sib txawv txawv no ntawm H- pub dawb + qeeb phenoxy noj yog dab tsi ua rau BHT tus qauv kub thawj antioxidant.
| Qhov tshwm sim | Dawb crystalline hmoov / flakes |
| Melting Point | 69-72℃(kua siab tshaj ~ 70 degree) |
| Boiling Point | 265℃@ 1 atm |
| Flash Point | 127℃(COC); Ntau dua lossis sib npaug li 100 degree |
| Ceev @ 20 degree | ~ 1.048 g / cm³ (khoom) |
| Solubility hauv dej | ~ 0.6 mg / L (xws li insoluble) |
| Solubility nyob rau hauv cov roj | Soluble heev - ntxhia roj, PAO, ester, zaub roj |
Technical Specification
Siab -purity Ntau dua lossis sib npaug li 99.5% muaj nyob rau ntawm kev thov; qib kev lag luam Ntau dua lossis sib npaug rau 99.0% tus qauv
Nqaim MP ntau paub meej tias siab purity; impurities cuam tshuam MP; khoom ntawm ambient; melts cleanly tsis muaj residue
Ua tau zoo xoom tshauv - BHT tsis muaj hlau; tag nrho cov khoom combustion yog CO₂ thiab H₂O (los ntawm C, H) thiab trace organic char; tsis muaj inorganic residue
Dej-dawb mus rau lub teeb heev straw hauv tov; Cov roj nplaum kawg / cov xim polymer yog cov roj hauv paus, tsis yog BHT; pab tsis muaj xim darkening ntawm ib txwm kho tus nqi
| Parameter | Specification | Txoj Kev Xeem | Nco tseg |
|---|---|---|---|
| Qhov tshwm sim | Dawb crystalline hmoov los yog flakes | Pom kev | Ntshiab dawb khoom; yam ntxwv faint phenolic tsw; ib qho tawm -dawb lossis daj daj qhia tias oxidative degradation ntawm BHT nws tus kheej - tsis lees txais cov khoom no; paub meej tias dawb tsos ntawm daim ntawv txais nyiaj |
| Purity (GC) ★ | Ntau dua lossis sib npaug li 99.0 wt% | GC (qhov chaw normalization) | Key quality parameter - GC purity directly correlates with antioxidant efficacy per gram. Impurities at >1% tej zaum yuav muaj xws li unreacted p-cresol los yog di-alkylation los ntawm- khoom; cov no tsis muaj zog ua antioxidants thiab txo nqi -kev ua tau zoo. High-purity Ntau dua lossis sib npaug li 99.5% muaj rau cov ntawv thov khoom noj khoom haus zoo tshaj plaws. |
| Melting Point | 69-72 degree | ASTM E794 / DSC / ASTM E794 / TS | Cov ntaub ntawv MP rau ntshiab BHT: 70-71 degree; nqaim ntau ntawm 69-72℃yog qhov ntsuas purity theem nrab; eutectic kev nyuaj siab los ntawm ib qho impurities: qis MP thiab / los yog ntau yam teeb liab impurity muaj |
| Lub ntsiab lus ✅ | Tsawg dua lossis sib npaug li 0.01 wt% | ASTM D 482 2 | ✅ SAPS pab txhawb=xoom. Tsis zoo li ZDDP lossis cov tshuaj ntxuav tes, BHT tawm tsis muaj cov hmoov tshauv hlau. Tseem ceeb rau DPF/GPF systems, TPWS, TWC catalysts. |
| Sulfur / Phosphorus ✅ | Tsis pom muaj leej twg | Molecular (tsis muaj S lossis P atoms hauv C₁₅H₂₄O) | ✅ Zero S thiab P los ntawm molecular muaj pes tsawg leeg. Tsis muaj kev cuam tshuam nyiaj txiag SAPS. ACEA C1 / C2 / C3 / C5 ua raws ntawm txhua tus nqi kho mob. |
| Xim (APHA) | Tsawg dua lossis sib npaug li 20 Hazen | ASTM D 1209 Cov Lus Qhia | Dej-dawb hauv kev daws; tawm - cov khoom siv xim tshwj xeeb qhia tias oxidised BHT - tsis haum rau kev siv |
| Cov ntsiab lus dej (KFT) | Tsawg dua lossis sib npaug li 0.10% | Karl Fischer Titration | BHT yog hygroscopic hauv hmoov daim ntawv - khw kaw; noo noo txhawb nqa caking thiab xim hloov nyob rau hauv cia; noo noo tsawg dua los yog sib npaug rau 0.10% ntawm COA pom zoo kom qhuav cia ua raws |
| Ntim | 25 kg hnab · 25 kg carton · 500 kg jumbo hnab | - | Polyethylene inner liner + woven hnab; kaw; khaws cia txias, qhuav, deb ntawm lub teeb thiab cua sov; Lub neej txee Ntau dua lossis sib npaug li 18 lub hlis kaw; tsis muaj qhov tshwj xeeb cov khoom tsim kev puas tsuaj rau cov khoom BHT ntawm cov ntim ntim txheem |
Daim Ntawv Thov & Kev Qhia Txog Kev Siv Tshuaj
1. Lubricants & Roj
BHT yog tus qauv tseem ceeb antioxidant hauv cov roj cav, cov roj lubricants, cov roj turbine, cov roj compressor, cov roj iav, roj transformer, thiab roj. Hauv cov qauv roj cav (API SP, ACEA C3, CK-4), BHT (0.2–0.5 wt%) feem ntau yog ua ke nrog ZDDP (0.7–1.2 wt%) los muab kev sib txuas ua ke ntawm thawj / theem nrab AO mechanism khub. Nyob rau hauv transformer thiab turbine roj daim ntawv thov (IEC 60296, BS EN ISO 4263), BHT ntawm 0.3-0.5 wt% feem ntau yogib leegantioxidant, raws li tsis muaj ZDDP tso cai (kev pheej hmoo ntawm ZDDP incompatibility nrog transformer rwb thaiv tsev ntaub ntawv). BHT cov pab pawg zoo I–IV cov roj solubility thiab SAPS-dawb profile ua rau nws sib xws nrog txhua hom roj hauv paus thiab tag nrho SAPS specifications yam tsis muaj kev txwv. Pom zoo kho rau txuas ntxiv -drain hydraulic roj: 0.3–0.6 wt%.
2. Polymers & Plastics
Hauv kev ua cov polyolefin (HDPE, LDPE, PP), BHT ntawm 0.05–0.2 wt% tiv thaiv thermal oxidative degradation thaum extrusion thiab txhaj tshuaj molding (ua kub 180–250 degree) thiab tiv thaiv cov khoom tiav thaum lub sij hawm ntev - lub sij hawm cia thiab UV- lub teeb raug. Hauv PVC, BHT muab kev tiv thaiv antioxidant ntxiv nrog rau cov cua sov stabilizer. Hauv cov roj hmab hluavtaws thiab elastomers (SBR, NBR, EPDM), BHT ntawm 0.1–0.5 wt% txhim kho kev laus tiv thaiv - ASTM D573 kev ntsuas kub ntawm kev laus paub meej tias BHT- kho cov roj hmab khaws cia lub zog tensile thiab elongation - tawg zoo dua tom qab {10} xuab moos tsis zoo tswj. BHT yog ib qho ntawm ob peb cov antioxidants pom zoo rau cov polymers hauv cov zaub mov-kev tiv tauj daim ntawv thov (EU Reg. 10/2011, FDA 21 CFR 178.2010).
3. Roj - Roj av, Diesel, Biodiesel, Dav Hlau
Ntawm cov nqi kho mob qis heev (10–50 mg / kg, piv txwv li ppm), BHT ua haujlwm zoo li cov roj oxidation inhibitor hauv cov roj av (tiv thaiv cov pos hniav thiab peroxide tsim thaum lub sijhawm cia, ASTM D873 induction lub sij hawm kuaj), diesel (tiv thaiv kev nyab xeeb thiab tsaus xim los ntawm lipid oxidation, ASTM D227411), biodiesel test. - BHT ntawm 50–200 ppm nce biodiesel induction lub sij hawm los ntawm 4 mus rau 8+ teev, ua tau raws li EN 14214 Ntau tshaj los yog sib npaug rau 8 h yuav tsum tau), thiab aviation turbine roj (tiv thaiv hydroperoxide tsub zuj zuj, ASTM D3241 JFTOT). Tus nqi kho mob qis heev hauv cov roj (10–50 ppm) ua rau BHT tus nqi -tsis pom zoo roj stabilizer txawm tias tus nqi hwm. Nws tag nrho cov roj solubility (tsis muaj aqueous partitioning), tsis muaj hlau residues, thiab compatibility nrog tag nrho cov additive hom ua rau nws thawj - xaiv oxidation inhibitor rau ntev - cia roj.
4. Khoom noj khoom haus, tshuaj pleev ib ce & kev cai daim ntawv thov
BHT yog ib qho ntawm cov khoom siv hluav taws xob nkaus xwb nrog rau ob qho kev pom zoo EU zaub mov ntxiv (E321, max 200 mg / kg hauv cov rog thiab roj, 100–200 mg / kg hauv lwm cov khoom noj raws li Kev Cai EC 1333/2008) thiab FDA zaub mov-hu rau max.20018, 2. 0.02% los ntawm qhov hnyav ntawm cov rog lossis roj cov ntsiab lus hauv cov zaub mov). Hauv cov tshuaj pleev ib ce thiab kev saib xyuas tus kheej, BHT tau pom zoo los ntawm EU Cosmetics Regulation 1223/2009 raws li kev khaws cia (Annex V, max 0.1% nyob rau hauv tawm- ntawm cov khoom, 0.8% nyob rau hauv yaug-tawm) thiab yog dav siv nyob rau hauv cream, lotions, lipsticks. Khoom noj khoom haus- qib BHT (Ntau dua lossis sib npaug li 99.5% purity, hnyav hlau tsawg dua lossis sib npaug li 1 ppm) muaj nyob rau ntawm kev thov nrog cov zaub mov nrog- cov ntaub ntawv qib. Lus Cim: Sinolook tus qauv kev lag luam-qib BHT (Ntau dua lossis sib npaug li 99.0%) yog tsim rau cov roj nplua nyeem, polymer, roj, thiab tshuaj pleev ib ce (tsis yog{26}} zaub mov) daim ntawv thov; qhia "zaub mov-qib" rau cov roj noj, khoom noj ncaj qha- tiv tauj, thiab daim ntawv thov EU E321.
| Daim ntawv thov | Tus nqi kho mob | Qhov Ntsuas Ntsuas / Txheem | Lub luag haujlwm tseem ceeb |
|---|---|---|---|
| Cav roj (nrog ZDDP) | 0.2 ~ 0.5 hli | Sequence IIIGH, RULER depletion | Primary AO (radical terminator), synergistic with ZDDP (secondary AO) |
| Transformer / turbine roj (tseem AO) | 0.3 ~ 0.5 hli | IEC 60296; IEC 60296 ASTM D3487 Cov Lus Qhia Tshwj Xeeb TS EN ISO 4263 Kev Tswj Xyuas Kev Nyab Xeeb | Sole AO; tiv thaiv transformer insulating roj / turbine roj thaum lub sijhawm ua haujlwm ntev |
| Hydraulic / iav / compressor roj | 0.1-0.6 wt% | D2272 RPVOT, D943 TOST, DIN 51354 | Oxidation inhibitor, sludge / kua roj vanish tiv thaiv |
| Polyethylene / polypropylene (PP, PE) | 0.05-0.2 hli | ASTM D3012 (melt flow stability), OIT (D3895) | Ua stabilizer (melt extrusion) + ntev -lub sij hawm thermal stabilizer |
| Synthetic roj hmab / elastomers | 0.1 ~ 0.5 hli | ASTM D573 (kub laus) | Kev laus tsis kam; khaws cov khoom tensile thiab elongation |
| Roj av / diesel roj | 10-50 ppm (mg / kg) | ASTM D873 (lub sijhawm induction), D2274 | Cia oxidation inhibitor; tiv thaiv cov pos hniav, haze, xim darkening |
| Biodiesel / FAME | 50-200 ppm | EN 14112 (Rancimat, Ntau dua lossis sib npaug rau 8 h induction) | FAME oxidation stability; Raws li EN 14214 cia spec |
| Khoom noj khoom haus / tshuaj pleev ib ce | Tsawg dua lossis sib npaug li 200 ppm (khoom noj khoom haus); Tsawg dua lossis sib npaug li 0.1% (cov tshuaj pleev ib ce) | EU E321 (EC 1333/2008); FDA 21 CFR 172.185; EU Cosmetics Reg. 1223/2009 | Preservative / anti-rancidity nyob rau hauv edible oils, cosmetic oil bases, zaub mov ntim |
Cov lus nug nquag
Q: Ua li cas BHT piv rau lwm cov tshuaj tiv thaiv phenolic antioxidants xws li Irganox L01, L57, lossis L135?
BHT (MW 220, monofunctional - ib OH ib molecule) yog qhov qis tshaj -molecular- hnyav tus qauv hindered phenol thiab feem ntau volatile ntawm koob. Nws qis MW txhais tau hais tias muaj zog antioxidant ntau dua ib gram (ntau dua OH pawg hauv ib chav tsev loj) tab sis kuj tseem muaj zog dua - ntawm qhov kub thiab txias siab tshaj 130 degree, BHT tuaj yeem evaporate los ntawm cov roj theem dhau sijhawm, txo AO reserves. Siab dua -MW polyfunctional hindered phenols nyiamIrganox L01(MW ~ 533, hindered phenol ester - qis volatility, zoo siab -kub persistence),L57(kua, siab -MW tov ester - zoo heev lubricity + AO dual muaj nuj nqi), thiabL135(MW ~ 484, phenol-sulphide - tab sis nco ntsoov L135 muaj cov sulfur thiab tsis yog SAPS-dawb) muab kev ua kom sov zoo dua qub tab sis tus nqi siab dua. Cov txheej txheem tsim tawm: siv BHT raws li tus nqi -cov txiaj ntsig hauv paus AO (0.2–0.5 wt%) ua tiav los ntawm qhov qis-volatility siab-MW phenol (xws li L01, 0.1–0.3 wt%) rau kev tso dej txuas ntxiv, es tsis yog cia siab rau BHT ib leeg rau 0.00 km ntawm qhov ntws mus rau 5.0 km.
Q: BHT puas tuaj yeem siv rau hauv ACEA C1 / Ultra-Cov qauv SAPS qis?
Yog, tsis muaj kev txwv. BHT tsis muaj sulphur, phosphorus, lossis hlau atoms - nws cov mis C₁₅H₂₄O pab xoom rau txhua qhov SAPS tsis. Hauv ACEA C1 (qhov nruj tshaj plaws SAPS txwv: S / A Tsawg dua lossis sib npaug rau 0.5%, P Tsawg dua lossis sib npaug rau 0.05%, S Tsawg dua lossis sib npaug li 0.2%) thiab ACEA C5 (P Tsawg dua lossis sib npaug rau 0.05%) cov qauv, qhov nruj P txwv nruj heev txwv ZDDP kho tus nqi (max ~ 0.0%). BHT thiab lwm yam SAPS-dawb phenolic/amine antioxidants yog siv los ntawm kev kho tus nqi siab (0.5–1.0 wt% BHT + 0.3–0.6 wt% amine AO) los them rau qhov txo qis ZDDP AO kev pab, tswj kev ua haujlwm IIIGH oxidation txawm tias qis ZDDP. Nov yog "SAPS-dawb AO pawg" txoj hauv kev siv hauv ACEA C1/C5 premium hluavtaws cav roj (xws li VW 508.00/509.00 pom zoo formulations).
Q: Puas muaj zaub mov-kev txhawj xeeb txog kev nyab xeeb nrog BHT hauv cov roj nplua nyeem?
Rau cov txheej txheem kev lag luam lubricant daim ntawv thov (cov roj cav, hydraulic, iav roj), tsis muaj zaub mov- muaj kev txhawj xeeb txog kev nyab xeeb vim tias cov roj lubricants tsis sib cuag nrog zaub mov. Rau cov ntawv thov hauv cov zaub mov- cov khoom siv ua haujlwm - qhov twg cov roj nplua nyeem tsis zoo- rau- kev sib cuag zaub mov yog ua tau - NSF H1 sau npe (yav tas los NSF/ANSI 51) xav kom txhua yam khoom, suav nrog cov tshuaj tua kab mob, ua tau raws li cov zaub mov- cov qauv kev nyab xeeb. BHT (FDA 21 CFR 172.185 pom zoo) yog siv hauv NSF H1 zaub mov- qib roj nplua nyeem raws li cov tshuaj tiv thaiv antioxidant, muab cov qauv ua tau raws li tag nrho lwm cov khoom xyaw NSF H1. Siab -purity BHT Ntau dua lossis sib npaug li 99.5% nrog daim ntawv pov thawj hlau hnyav yog xav tau rau NSF H1 formulations. Sinolook tuaj yeem muab ntau dua lossis sib npaug li 99.5% BHT nrog daim ntawv pov thawj hlau hnyav (Pb, As, Hg, Cd Tsawg dua lossis sib npaug li 0.5 ppm txhua) thiab FDA / EU cov ntaub ntawv ua raws li kev thov rau cov neeg siv khoom tsim khoom noj- qib lubricants.
Technical & Regulatory References
GC purity (chaw normalisation) · ASTM E794/DSC (MP 69–72 degree) · ASTM D482 ( tshauv Tsawg dua los yog sib npaug rau 0.01%) · ASTM D1209 (xim Tsawg dua lossis sib npaug li 20 APHA) · KFT (dej Tsawg dua lossis sib npaug li 0.10%) ·ASTM D2272 RPVOT (oxidation stability, turbine/hydraulic)· ASTM D943 TOST · ASTM D3895 OIT (polymer) · ASTM D3012 (melt flow stability, polyolefin) · ASTM D873 (roj induction lub sij hawm) · EN 14112 (biodiesel Rancimat, ntau dua los yog sib npaug rau 8h) · RULER voltation (Oil deammetry) (Lub cav roj oxidation)
Lubricants:API SP · ACEA C1-C5 (tag nrho) · ACEA E6/E9 · CK-4/FA-4 · IEC 60296 (transformer oil BHT 0.08-0.40%) · IEC 60296 ASTM D3487 · BS EN ISO 4263 · Denison-25/23/HF ·Polymers:EU Reg. 10/2011 (zaub mov-contact polymers) · FDA 21 CFR 178.2010 ·Roj:TS EN 14214 (biodiesel) · ASTM D975 (diesel) · ASTM D4814 (roj av) ·Khoom noj khoom haus:EU E321 (EC 1333/2008) · FDA 21 CFR 172.185 · Codex Alimentarius ·Tshuaj pleev ib ce:EU Cosmetics Reg. 1223/2009 Annex V ·NSF H1:Khoom noj khoom haus- qib roj nplua nyeem (nrog Ntau dua lossis sib npaug rau 99.5% + daim ntawv pov thawj hlau hnyav)
CAS 128-37-0 · EINECS 204-881-4 · REACH sau npe · TSCA list ·EU zaub mov additive E321 (EC 1333/2008) · FDA 21 CFR 172.185 · EU Cosmetics Annex V · No SVHC (not on REACH candidate list) · GHS: H302 (harmful if swallowed in large amounts - low acute toxicity at normal treat rates); LD50 (oral, rat) >6,000 mg/kg - toxicity tsawg heev · RoHS raws · SAPS-dawb: xoom Zn/P/S pab · Biodegradable organic compound (tsis muaj hlau hnyav residues)
BHT ✅ (qhov no - lub hauv paus thawj AO)· Antioxidant L01 (siab dua MW hindered phenol ester, qis volatility) · Antioxidant L57 (kua siab -MW phenol, dual AO + lubricity) · Lwm yam hindered phenols (muaj nyob rau hauv kev thov) → Complementary: Amine Antioxidants series · ZDDP series muaj (lwm)
BHT · 2,6-Di-tert-butyl-p-cresol · CAS 128-37-0 · C₁₅H₂₄O · Purity Ntau dua los yog sib npaug li 99.0% · SAPS-Free · White Crystalline Flakes 5.000. Industrial + Khoom noj khoom haus qib
Thov Tus Nqi, TDS & Kev Pabcuam Kev Pabcuam
Qhia qib (kev lag luam loj dua lossis sib npaug li 99.0% lossis zaub mov- qib Ntau dua lossis sib npaug li 99.5%), qhov ntau, daim ntawv thov (lubricant / polymer / roj / khoom noj / tshuaj pleev ib ce), thiab qhov chaw nres nkoj. Cov ntaub ntawv txheem: COA (GC purity, MP, tshauv, xim, dej), TDS, SDS (GHS 9-section). Khoom noj khoom haus qib: daim ntawv pov thawj hlau hnyav, EU E321 / FDA 21 CFR ua raws tsab ntawv muaj. Cov qauv (50–500 g) muaj rau kev sim ua qauv . 25 kg, 500 kg jumbo hnab; FCL tus nqi rau kev txiav txim ntau.
Phenolic Antioxidants Series:
BHT (CAS 128-37-0) ✅· Antioxidant L01 · Antioxidant L57 · Lwm yam hindered phenols →Complementary: Tag Nrho ZDDP Series ✅ · Amine Antioxidants (tom ntej series)
Cim npe nrov: 2,6-di-tert-butyl-p-cresol, Tuam Tshoj 2,6-di-tert-butyl-p-cresol manufacturers, lwm tus neeg
