1,3-dihydroxymethyl-5,5-dimethyl Glycolylurea / DMDMH CAS 6440-58-0
Kev Taw Qhia:
| INCI | CAS# | Molecular | MW |
| 1,3-dihydroxymethyl-5,5-dimethyl Glycolylurea | 6440-58-0 | C7H12N2O4 | 188 |
DMDM hydantoin yog ib yam khoom dawb uas tsis muaj ntxhiab, crystalline uas ua haujlwm ua tus neeg sawv cev antimicrobial thiab preservative hauv cov tshuaj pleev ib ce thiab cov khoom siv tu tus kheej. Cov khoom yog pob tshab daj. Nws yooj yim yaj hauv dej, cawv, glycol, thiab ruaj khov hauv aqueors theem thiab dej kua roj. Nws yuav nyob ruaj khov hauv -10 ~ 50 ℃, PH 6.5 ~ 8.5 rau 1 xyoos.
Cov Lus Qhia Tshwj Xeeb
| Qhov tsos | Kua dawb pob tshab |
| Cov Ntsiab Lus ntawm Cov Khoom Siv Nquag % ≥ | 55 |
| Lub zog nqus tshwj xeeb (d420) | 1.16 |
| Qhov Acidity (PH) | -6.5~7.5 |
| Cov ntsiab lus ntawm formaldehyde% | 17~18 |
Pob khoom
Ntim nrog lub raj mis yas lossis lub nruas. 10kg / lub thawv (1kg × 10 lub raj mis). Pob khoom xa tawm yog 25kg lossis 250kg / lub nruas yas.
Lub sijhawm siv tau
12 lub hlis
Kev Khaws Cia
nyob rau hauv qhov ntxoov ntxoo, qhuav, thiab kaw, hluav taws kev tiv thaiv.
DMDM hydantoin yog ib yam khoom siv tiv thaiv kab mob hauv cov tshuaj pleev ib ce thiab cov khoom siv tu tus kheej. Nws ua haujlwm los ntawm kev qeeb thiab tiv thaiv kev puas tsuaj hauv cov khoom xws li tshuaj zawv plaub hau thiab tshuaj pleev plaub hau, thiab hauv cov khoom siv tu tawv nqaij xws li cov tshuaj pleev ib ce thiab cov tshuaj pleev ib ce. DMDM hydantoin kuj yog ib yam tshuaj tua kab mob siv hauv cov tshuaj pleev ib ce thiab cov khoom siv tu tus kheej. Ua ib yam tshuaj tua kab mob, nws tuaj yeem pab tiv thaiv kev loj hlob ntawm cov kab mob fungi, poov xab thiab cov kab mob phem uas tuaj yeem ua rau tib neeg mob lossis ua rau lawv mob pob khaus, piv txwv li. DMDM hydantoin yog ib qho "formaldehyde pub dawb," uas txhais tau tias ua haujlwm ua ib yam tshuaj tiv thaiv thiab tshuaj tua kab mob, nws tso tawm cov formaldehyde me me thoob plaws lub sijhawm khaws cia ntawm cov khoom siv tu tus kheej lossis cov khoom siv pleev ib ce. Raws li Pawg Neeg Saib Xyuas Cov Khoom Siv Tu Tus Kheej, cov tshuaj tiv thaiv xws li DMDM hydantoin uas "maj mam tso tawm cov formaldehyde me me, muaj kev nyab xeeb dhau sijhawm" pab tiv thaiv cov pwm thiab cov kab mob phem. Kev ntsuam xyuas kev nyab xeeb tsis ntev los no luam tawm hauv International Journal of Toxicology tau lees paub tias formaldehyde tuaj yeem siv tau zoo hauv cov tshuaj pleev ib ce yog tias tsis tshaj qhov kev txwv kev nyab xeeb. Cov Lus Qhia Txog Tshuaj Pleev Xim ntawm European Union kuj tau pom zoo DMDM hydantoin ua ib qho tshuaj tiv thaiv hauv cov tshuaj pleev ib ce thiab cov khoom siv tu tus kheej ntawm qhov siab tshaj plaws ntawm 0.6 feem pua. DMDMH yaj tau yooj yim hauv dej. Nws tuaj yeem ntxiv rau tus neeg sawv cev hloov kho qab zib lossis cov khoom emulsifying ntawm txheej. DMDMH muaj kev sib raug zoo nrog cation, anion thiab nonionic surfactant, emulsifier agent thiab protein. Kev sim tau ua pov thawj, nws tuaj yeem khaws cov tshuaj tua kab mob hauv ntau qhov PH thiab qhov kub thiab txias rau lub sijhawm ntev. Nws tuaj yeem txwv tsis pub Gram-positive becterium loj hlob, Gram-negative bacterium, yeasts thiab mildew loj hlob. Cov koob tshuaj pom zoo: 0.1 ~ 0.3, qhov kub thiab txias: qis dua 50 ℃.
