I-Dehydroacetic acid/DA/CAS: 520-45-6
Incazelo emfushane:
Igama Lomkhiqizo: I-Dehydroacetic acid
I-CAS: 520-45-6
Uhlobo: ZA-Y
MF:C8H8O4
I-MW:168.15
ISAKHIWO:
Incazelo:
I-Dehydroacetic acid iyi-derivative ye-pyrone, evame ukwenziwa yi-base-catalyzed dimerization ye-diketene. Isetshenziswa njengesivikelo emikhiqizweni yemithi, yokudla kanye nezimonyo.
Izindinganiso zesibili zemithi zokusetshenziswa ekulawuleni ikhwalithi, zinikeza amalabhorethri emithi kanye nabakhiqizi indlela elula nengabizi kakhulu yokulungiselela izindinganiso zokusebenza zangaphakathi.
Imininingwane:
| Into | Imininingwane |
| Indawo yokuncibilika | 111-113 °C (ngokukhanya) |
| Indawo yokubilisa | 270 °C (ngokukhanya) |
| Ubuningi obukhulu | 700kg/m3 |
| Ubuningi | 1.1816 (isilinganiso esilinganiselwe) |
| Ukuncibilika | 2g/L |
| Inkomba yokubuka | 1.4611 (isilinganiso) |
| Izinga lokushisa lesitoreji. | Gcina ngaphansi kuka-+30°C. |
| Ifomu | I-Fine Crystalline Powder |
| Umbala | Ophuzi okhanyayo noma ukhilimu |
| PH | 4 (2g/l, H2O, 20℃) |
Ukusetshenziswa
I-Dehydroacetic acid (DHS) isetshenziswa njengesiqinisi semikhiqizo yezimonyo neyemithi ngenxa yomsebenzi wayo wokubulala amagciwane kanye ne-bactericide, njengesithasiselo se-PVC-stabilizers kanye nokwenziwa kwemithi yezilwane.
I-Geogard(R) 111a preservative isekelwe ku-dehydroacetic acid (DHA) ngakho-ke iqashelwa yiziphathimandla ezinkulu zokulawula izimonyo, izindlu zangasese kanye neziqholo emhlabeni wonke ukuze isetshenziswe emikhiqizweni yezimonyo kanye nokunakekelwa komuntu siqu.
Isivikelo se-Geogard(R) 221 sisekelwe ku-dehydroacetic acid (DHA) kanye ne-benzyl alcohol, ngakho-ke siqashelwa yiziphathimandla ezinkulu zokulawula izimonyo, izindlu zangasese kanye neziqholo emhlabeni wonke ukuze sisetshenziswe emikhiqizweni yezimonyo kanye nokunakekelwa komuntu siqu.
I-Geogard(R) 361 preservative isekelwe ezingxenyeni eziyisithupha ezisebenzisanayo, zonke ezamukelwa kabanzi emhlabeni jikelele: i-dehydroacetic acid (DHA); i-salicylic acid; i-benzoic acid; i-phenoxyethanol; i-benzyl alcohol; kanye ne-benzethonium chloride.
i-antifungal, i-antibacterial
I-dehydroacetic acid iyisilondolozi esinamandla aphansi okuzwela. Lena yi-asidi ebuthakathaka esetshenziswa njenge-ejenti ebhubhisa isikhunta namagciwane ezimonyweni. Ukuba khona kwezinto eziphilayo kunciphisa ukusebenza kwayo. Ayicasuli noma ayibangeli ukungezwani komzimba lapho isetshenziswa esikhumbeni.
I-Dehydroacetic Acid (DHA) iyisilondolozi esiyimpuphu ekristalu enokuncibilika okungaphansi kuka-0.1 g ku-100 g wamanzi ku-25°C. Ingabhekana nokusabela okuhlukahlukene kwamakhemikhali okwenza kube usizo ezinhlotsheni eziningi. Isetshenziswa ku-0.01–0.5% ekuvimbeleni ukukhula kwezinto eziphilayo ekudleni okuhlukahlukene. Isetshenziselwa i-squash esikiwe noma ehlutshiwe, ngaphandle kwe-65 ppm esele ku-squash elungisiwe noma elungiselelweni.
Ukupakisha Nokuthumela
25KG/Isigubhu noma ngokwezidingo zamakhasimende.
Kungokwempahla evamile futhi kungathunyelwa ngolwandle nangomoya
Gcina futhi ugcine
Isikhathi sokuphila: Izinyanga ezingama-24 kusukela ngosuku lokwenziwa kwento epakishweni lokuqala elingavulwanga, igcinwe endaweni epholile neyomile kude nokukhanya kwelanga okuqondile, amanzi.
Indawo yokugcina izinto enomoya, Ukomisa okuphansi kwezinga lokushisa, Ihlukaniswe nama-oxidants, ama-acid.
