Methyl 4-chloroacetoacetate
Ethyl-4-chIorooaoetoacetate
Dzina: Methyl 4-chloroacetoacetate
Nambala ya CAS: 32807-28-6
Fomula ya maselo: C5H7ClO3
Kapangidwe Kapangidwe: Mawonekedwe: Madzi osawoneka bwino opanda mtundu
Chiyero:
≥98%.
HS kodi: 29189900.9
Mulingo Wowopsa: 8 + 6.1
Malo Osungunuka: 16-18°C Malo Owira: 80°C 5mm Hg(lit) Kachulukidwe: 1.305g/mL pa 25°C
(1IT)
Refractive
index: N20/D 1.456(lit).
Kusungunuka kwamadzi: 71g/L (20°C) Malo osungira: pansi pa 15°C (olimba)
Ntchito: amagwiritsidwa ntchito ngati pakati pa mankhwala ndi mankhwala ophera tizilombo
Kunyamula: 200KG / mbiya
Mawonekedwe
Yoyaka koma yosayaka, imakhala ndi fungo lapadera la alkyl phenol.Kusungunuka mu mowa, ester, alkane, zonunkhira ndi zosungunulira zina organic, monga Mowa, acetone, butyl acetate, petulo, toluene, sungunuka mu amphamvu alkali solution.Ndi makhalidwe wamba phenolic zinthu, pokhudzana ndi kuwala, kutentha, kukhudzana ndi mpweya, mtundu pang`onopang`ono kwambiri.
Popanga mafakitale, p-tert-butylphenol imagwiritsidwa ntchito makamaka popanga mafuta osungunuka a phenolic resin, inki yosindikizira, retardant yamoto, etc. PTBP imagwiritsidwanso ntchito ngati polyvinyl chloride stabilizer, surfactant, ndi UV absorber.M'munda wazinthu zolumikizirana ndi chakudya, p-tert-butyl phenol imagwiritsidwa ntchito popanga utomoni wa polycarbonate, ndipo itha kugwiritsidwanso ntchito popanga zowonjezera pazolumikizana ndi chakudya.
1. Chitetezo cha PTBP
PTBP ilibe chibadwa ndi kawopsedwe kawopsedwe, ndipo kuopsa kwapakamwa kwa makoswe okhala ndi LD50> 2000 mg/kg ndi kwa kawopsedwe kakang'ono.Khungu la kalulu limapsa pang'ono.Mtengo wa NOAEL wa 60 mg / kg · bw / tsiku unawonedwa mu makoswe ena omwe ali ndi kupuma kwachilendo kapena kovuta komanso kuchepa kwa plasma albumin panthawi ya kubwereza kwapakamwa kwa masiku 42.Panthawiyi, PTBP ndi ya exogenous phenolic estrogens, ndipo mtengo wa NOAEL wa kawopsedwe ka ubereki wa makoswe ndi 200 mg/kg·bw/tsiku, kusonyeza kuopsa koberekera.Chifukwa chake, PTBP ili ndi zowopsa zina ndipo ikuyenera kusamalidwa.
2. Kugwiritsa ntchito PTBP pazakudya
PTBP ndi mankhwala omwe sapezeka kapena kulibe muzakudya.Itha kugwiritsidwa ntchito ngati kupanga polima kapena zowonjezera.
Mu ma polima, amagwiritsidwa ntchito makamaka ngati choyambira cha monomer komanso chosindikizira chomaliza.Mwachitsanzo, mu zokutira polima polima, formaldehyde, phenol, p-tert-butylphenol ma polima ndi ma polima formaldehyde, phenol, p-tert-butylphenol ndi n-butanol ma polima ndi p-tert-butylphenol monga monomer ndi starter.Mapulasitiki a Poly4,4 '-isopropyl diphenyl carbonate osindikizidwa ndi p-tert-butylphenol mu ma polima apulasitiki.
Monga chowonjezera, chitha kugwiritsidwa ntchito kuchepetsa zomwe zili kumapeto kwa hydroxyl mu zokutira ndikuwongolera kukhazikika kwazinthu.Mu pulasitiki angagwiritsidwe ntchito ngati antioxidant, monga PS pulasitiki chakudya kukhudzana zipangizo ndi mankhwala, pofuna ziletsa mankhwala kupanga kapena ntchito matenthedwe makutidwe ndi okosijeni, photooxidation anachita liwiro, kuchedwa kuwonongeka, chikasu ukalamba ndondomeko, ndi kutalikitsa utumiki. moyo wa mankhwala.
P-tert-butylphenol ali ndi antioxidant katundu ndipo angagwiritsidwe ntchito ngati stabilizer kwa labala, sopo, chlorinated hydrocarbons ndi ulusi kugaya chakudya.Uv absorbent, mankhwala, mphira, utoto ndi anti cracking agent.Mwachitsanzo, amagwiritsidwa ntchito popanga utomoni wa polycarbon, tert-butyl phenolic resin, epoxy resin, polyvinyl chloride, styrene stabilizer.Kuphatikiza apo, ndizinthu zopangira mankhwala othamangitsa tizilombo, mankhwala ophera tizilombo ndi ma acaricide, fungo labwino komanso chitetezo cha zomera.Itha kugwiritsidwanso ntchito monga zofewa, zosungunulira, zowonjezera utoto ndi utoto, antioxidant wamafuta opaka mafuta, demulsifier yamafuta ndi zowonjezera zamafuta agalimoto.
Mapulogalamu ena:
(1) Kwa mafuta osungunuka a phenolic resin, mankhwala ndi formaldehyde condensation amatha kupezeka pazifukwa zosiyanasiyana.Mu zomatira chloroprene osakaniza 10-15% ya mankhwala, kupeza sungunuka utomoni, zomatira mtundu uwu makamaka ntchito zoyendera, zomangamanga, boma, kupanga nsapato, etc. kusindikiza, photogravure zapamwamba ndi zina zotero.Mu kutchinjiriza varnish, angagwiritsidwe ntchito koyilo kuviika varnish ndi laminate varnish.
(2) Pakuti polycarbonate kupanga, monga phosgene polycarbonate anachita kuthetsa wothandizila, kuwonjezera Chemicalbook kuchuluka kwa 1-3% ya utomoni.
(3) Amagwiritsidwa ntchito pa epoxy resin, xylene resin resin;Monga polyvinyl chloride stabilizer, surfactant, UV absorber.
(4) Ndi katundu antioxidant, angagwiritsidwe ntchito ngati mphira, sopo, chlorinated hydrocarbons ndi nitrocelluloose stabilizer.Ndiwopangira mankhwala othamangitsa tizilombo (mankhwala), acaricide acaride (mankhwala ophera tizilombo) ndi woteteza mbewu, kununkhira, utomoni wopangira, komanso angagwiritsidwe ntchito ngati zofewa, zosungunulira, utoto ndi zowonjezera utoto.Itha kugwiritsidwanso ntchito ngati chophatikizira cha demulsifier pamunda wamafuta komanso chowonjezera chamafuta amgalimoto.