Hydroxyethyl methylcellulose (HEMC) yog cov khoom siv polymer hauv ntau yam lag luam, suav nrog tshuaj, khoom noj, tshuaj pleev ib ce, thiab kev tsim kho. Nws yog txaus siab rau nws cov thickening, emulsifying, zaj duab xis-forming, thiab stabilizing zog. Txawm hais tias nws siv dav heev, kev ruaj ntseg thaum nws tuav thiab siv yog qhov tseem ceeb heev. Nov yog cov kev ceev faj txog kev nyab xeeb rau kev siv hydroxyethyl methylcellulose:
1. Nkag siab txog cov khoom siv
HEMC yog ib qho uas tsis yog-ionic cellulose ether, ib qho derivative ntawm cellulose uas cov hydroxyl pawg tau hloov ib nrab nrog hydroxyethyl thiab methyl pawg. Qhov kev hloov kho no txhim kho nws cov solubility thiab functionality. Paub txog nws cov khoom siv tshuaj lom neeg thiab lub cev, xws li solubility, viscosity, thiab stability, pab tuav nws ruaj ntseg.
2. Cov Khoom Siv Tiv Thaiv Tus Kheej (PPE)
Hnab looj tes thiab khaub ncaws tiv thaiv:
Hnav cov hnab looj tes tiv thaiv tshuaj tiv thaiv kom tsis txhob sib cuag ntawm daim tawv nqaij.
Siv cov khaub ncaws tiv thaiv, nrog rau cov tsho ntev thiab lub tsho ntev, kom tsis txhob raug tawv nqaij.
Kev Tiv Thaiv Qhov Muag:
Siv looj tsom iav dub los yog daim npog ntsej muag los tiv thaiv cov plua plav lossis txaws.
Kev tiv thaiv ua pa:
Yog tias tuav HEMC hauv daim ntawv hmoov, siv lub ntsej muag plua plav lossis lub tshuab ua pa kom tsis txhob nqus cov khoom zoo.
3. Kev tuav thiab khaws cia
Qhov cua:
Xyuas kom muaj qhov cua txaus hauv qhov chaw ua haujlwm kom txo tau cov plua plav paug.
Siv cov pa tso pa hauv zos lossis lwm yam kev tswj xyuas engineering kom muaj huab cua nyob hauv qab cov kev txwv raug pom zoo.
Cia:
Khaws HEMC nyob rau hauv qhov chaw txias, qhuav kom deb ntawm noo noo thiab tshav ntuj ncaj qha.
Khaws cov thawv kaw kom nruj kom tsis txhob muaj kab mob thiab nqus dej.
Khaws deb ntawm cov khoom tsis sib xws xws li cov oxidizers muaj zog.
Kev Tiv Thaiv Kev Tiv Thaiv:
Tsis txhob tsim cov plua plav; tuav maj mam.
Siv cov tswv yim tsim nyog xws li ntub dej los yog siv cov khoom siv plua plav kom txo qis cov pa hauv huab cua.
Siv cov kev tu vaj tse zoo kom tsis txhob muaj plua plav tawm ntawm qhov chaw.
4. Cov txheej txheem dej ntws tawm
Cov Me Me:
cheb los yog nqus cov khoom thiab muab tso rau hauv lub thawv pov tseg kom zoo.
Tsis txhob qhuav cheb kom tsis txhob muaj plua plav tawg; siv txoj kev ntub dej los yog HEPA-filtered nqus tsev vacuum.
Loj Loj:
Tshem tawm qhov chaw thiab ua pa.
Hnav PPE tsim nyog thiab muaj cov txeej los tiv thaiv kom tsis txhob kis tau.
Siv cov ntaub ntawv inert xws li xuab zeb los yog vermiculite los nqus cov khoom.
Pov tseg cov khoom uas sau tau raws li cov cai hauv zos.
5. Kev Tiv Thaiv Kab Mob thiab Kev Tu Tus Kheej
Exposure Limits:
Ua raws li Kev Tswj Xyuas Kev Nyab Xeeb Kev Nyab Xeeb thiab Kev Noj Qab Haus Huv (OSHA) lossis cov kev cai hauv cheeb tsam cuam tshuam txog kev txwv tsis pub kis.
Tus Kheej Hygiene:
Ntxuav tes kom huv si tom qab tuav HEMC, tshwj xeeb tshaj yog ua ntej noj, haus, lossis haus luam yeeb.
Tsis txhob kov koj lub ntsej muag nrog hnab looj tes lossis tes.
6. Kev Tiv Thaiv Kev Noj Qab Haus Huv thiab Kev Pabcuam Ua Ntej
Inhalation:
Lub sij hawm raug rau HEMC plua plav tuaj yeem ua rau ua pa ua pa.
Txav tus neeg mob mus rau huab cua ntshiab thiab nrhiav kev kho mob yog tias cov tsos mob tshwm sim.
Tiv tauj daim tawv nqaij:
Ntxuav thaj chaw muaj kev cuam tshuam nrog xab npum thiab dej.
Nrhiav cov lus qhia kho mob yog tias khaus khaus tshwm sim.
Qhov muag tiv tauj:
Yaug qhov muag kom huv si nrog dej li 15 feeb.
Tshem cov looj ntsej muag yog tias tam sim no thiab yooj yim ua.
Nrhiav kev kho mob yog tias khaus khaus tshwm sim.
Noj:
Yaug lub qhov ncauj nrog dej.
Tsis txhob ntuav ntuav tshwj tsis yog hais los ntawm cov kws kho mob.
Nrhiav kev kho mob yog tias noj ntau heev.
7. Hluav taws kub thiab tawg puas tsuaj
HEMC tsis yog hluav taws kub heev tab sis tuaj yeem hlawv yog tias raug hluav taws.
Kev ntsuas hluav taws kub:
Siv cov tshuaj tsuag dej, ua npuas dej, tshuaj qhuav, lossis carbon dioxide los tua hluav taws.
Hnav cov iav tiv thaiv tag nrho, suav nrog lub tshuab ua pa ntawm tus kheej (SCBA), thaum tua hluav taws nrog HEMC.
Tsis txhob siv cov kwj dej uas muaj dej siab, uas tuaj yeem kis tau hluav taws.
8. Kev ceev faj ib puag ncig
Tsis txhob Environmental Release:
Tiv thaiv kev tso tawm HEMC mus rau hauv ib puag ncig, tshwj xeeb tshaj yog rau hauv cov dej hauv dej, vim nws tuaj yeem cuam tshuam rau cov dej hauv dej.
Kev pov tseg:
Pov tseg HEMC raws li hauv zos, xeev, thiab tsoom fwv cov cai.
Tsis txhob tso tawm rau hauv cov dej tsis muaj kev kho kom raug.
9. Cov ntaub ntawv tswj hwm
Labeling thiab Classification:
Xyuas kom HEMC ntim tau raug sau npe raws li cov qauv kev cai.
Paub koj tus kheej nrog Daim Ntawv Qhia Kev Nyab Xeeb (SDS) thiab ua raws li nws cov lus qhia.
Kev thauj mus los:
Ua raws li cov kev cai thauj HEMC, xyuas kom cov thawv ntim tau raug kaw thiab ruaj ntseg.
10. Kev cob qhia thiab kev kawm
Kev cob qhia neeg ua haujlwm:
Muab kev cob qhia txog kev tuav, khaws cia, thiab pov tseg ntawm HEMC.
Xyuas kom cov neeg ua haujlwm paub txog tej yam kev phom sij thiab kev ceev faj tsim nyog.
Cov txheej txheem xwm txheej kub ntxhov:
Tsim thiab sib txuas lus cov txheej txheem xwm txheej kub ntxhov rau kev nchuav, xau, thiab raug.
Ua ib qho kev xyaum ua haujlwm tsis tu ncua kom paub meej tias kev npaj.
11. Cov khoom tshwj xeeb ceev faj
Formulation-specific Risks:
Nyob ntawm kev tsim thiab kev xav tau ntawm HEMC, yuav tsum tau ceev faj ntxiv.
Nrog rau cov khoom tshwj xeeb cov lus qhia thiab cov chaw tsim khoom cov lus pom zoo.
Cov Lus Qhia Tshwj Xeeb rau Daim Ntawv Thov:
Hauv cov kws tshuaj, xyuas kom HEMC yog qib tsim nyog rau kev noj lossis txhaj tshuaj.
Hauv kev tsim kho, yuav tsum paub txog cov plua plav tsim thaum sib xyaw thiab siv.
Los ntawm kev ua raws li cov kev tiv thaiv kev nyab xeeb no, cov kev pheej hmoo cuam tshuam nrog kev siv hydroxyethyl methylcellulose tuaj yeem txo qis. Ua kom muaj kev nyab xeeb ntawm kev ua haujlwm tsis yog tsuas yog tiv thaiv cov neeg ua haujlwm nkaus xwb tab sis kuj tseem tswj kev ncaj ncees ntawm cov khoom thiab ib puag ncig ib puag ncig.
Post lub sij hawm: May-31-2024