Dehydroacetic acid/DA/CAS: 520-45-6
Kev Piav Qhia Luv:
Lub Npe Khoom: Dehydroacetic acid
CAS: 520-45-6
Hom: ZA-Y
MF:C8H8O4
MW:168.15
QAUV:
Kev piav qhia:
Dehydroacetic acid yog ib qho pyrone derivative, uas feem ntau yog synthesized los ntawm lub hauv paus-catalyzed dimerization ntawm diketene. Nws yog siv ua ib qho preservative hauv tshuaj, khoom noj thiab cov khoom siv pleev ib ce.
Cov qauv tshuaj theem ob rau kev siv hauv kev tswj xyuas zoo, muab rau cov chaw kuaj tshuaj thiab cov chaw tsim khoom nrog lwm txoj hauv kev yooj yim thiab pheej yig dua li kev npaj cov qauv ua haujlwm hauv tsev.
Kev Qhia Tshwj Xeeb:
| Khoom | Cov Lus Qhia Tshwj Xeeb |
| Qhov kub yaj | 111-113 °C (lit.) |
| Kub taw tes | 270 ° C (lit.) |
| Qhov ceev ntawm cov khoom loj | 700kg/m3 |
| Qhov Ceev | 1.1816 (kwv yees li qub) |
| Kev yaj tau | 2g/L |
| Cov ntsuas kev cuam tshuam | 1.4611 (kwv yees) |
| Cia txias. | Khaws cia rau hauv qab +30 ° C. |
| Daim Ntawv | Hmoov Crystalline Zoo |
| Xim | Xim daj daj los yog xim qab zib |
| PH | 4 (2g/l, H2O, 20℃) |
Kev Siv
Dehydroacetic acid (DHS) yog siv los ua stabilizer rau cov khoom siv pleev ib ce thiab tshuaj vim nws cov tshuaj tua kab mob thiab cov kab mob bactericide, ua cov khoom ntxiv rau PVC-stabilizers thiab rau kev tsim cov tshuaj kho tsiaj. Cov Ntaub Ntawv Khoom
Cov tshuaj tiv thaiv Geogard(R) 111a yog ua los ntawm dehydroacetic acid (DHA) thiab yog li ntawd cov koom haum tswj hwm kev zoo nkauj, chav dej thiab tshuaj tsw qab thoob ntiaj teb tau lees paub rau kev siv rau hauv kev zoo nkauj thiab cov khoom saib xyuas tus kheej.
Cov tshuaj tiv thaiv Geogard(R) 221 yog ua los ntawm dehydroacetic acid (DHA) thiab benzyl alcohol, thiab yog li ntawd cov koom haum tswj hwm kev kho kom zoo nkauj, chav dej thiab tshuaj tsw qab thoob ntiaj teb tau lees paub rau kev siv rau hauv kev kho kom zoo nkauj thiab cov khoom siv tu tus kheej.
Geogard(R) 361 tshuaj tiv thaiv yog ua los ntawm rau yam khoom sib xyaw ua ke, txhua yam no tau txais kev pom zoo thoob ntiaj teb: dehydroacetic acid (DHA); salicylic acid; benzoic acid; phenoxyethanol; benzyl alcohol; thiab benzethonium chloride.
tshuaj tua kab mob, tshuaj tua kab mob
dehydroacetic acid yog ib yam tshuaj preservative uas tsis tshua muaj peev xwm ua rau khaus. Qhov no yog ib hom kua qaub tsis muaj zog uas siv los ua ib yam khoom siv tua cov kab mob fungi thiab cov kab mob hauv cov tshuaj pleev ib ce. Qhov muaj cov organic matter ua rau nws txoj kev ua haujlwm txo qis. Nws tsis ua rau khaus lossis ua xua thaum siv rau ntawm daim tawv nqaij.
Dehydroacetic Acid (DHA) yog ib yam khoom siv tiv thaiv uas yog ib hom hmoov crystalline uas yaj tau tsawg dua 0.1 g hauv 100 g dej ntawm 25°C. Nws tuaj yeem dhau ntau yam tshuaj lom neeg uas ua rau nws siv tau ntau yam. Nws siv ntawm 0.01–0.5% rau kev tiv thaiv kev loj hlob ntawm cov kab mob hauv ntau yam khoom noj. Nws siv rau cov taub dag txiav lossis tev tawv, tsis pub ntau tshaj 65 ppm seem hauv lossis ntawm cov taub dag uas tau npaj tseg.
Ntim thiab Xa Khoom
25KG / Nruas los yog raws li cov neeg siv khoom xav tau.
Yog cov khoom siv dav dav thiab tuaj yeem xa los ntawm dej hiav txwv thiab huab cua
Khaws cia thiab khaws cia
Lub neej txee: 24 lub hlis txij li hnub tsim khoom hauv cov ntim khoom tsis tau qhib khaws cia rau hauv qhov chaw txias thiab qhuav kom tsis txhob raug tshav ntuj ncaj qha, dej.
Lub tsev rau khoom muaj cua nkag, ziab kom qhuav kub tsawg, Sib cais ntawm cov tshuaj oxidants, cov kua qaub.
