Cov khoom lag luam
Ethanol yog ib cov organic sib xyaw . Nws yog qhov tsis sib xws, ua kua tsis muaj xim zoo li tsw ntxhiab thiab pungent saj.
| Kev tshwm sim | Muaj kua tsis muaj xim |
| Tus ntxhiab | Caw-zoo li, pungent |
| Ceev | 0.78945 g / cm3(ntawm 20 degree) |
| Melting taw tes | -114.14 ± 0.03 Qib (-173.45 ± 0.05 Qib F; 159.01 ± 0.03 k) |
| Kub taw tes | 78.23 ± 0.09 Qib (172.81 ± 0.16 Degree F; 351.38 ± 0.09 k) |
|
Solubility hauv dej |
Kom ua kom tiav |
| phau ntawv ceev xwmP | −0.18 |
| Vapor siab | 5.95 KPA (ntawm 20 degree) |
| Acidity (PKa) | 15.9 (H2O), 29.8 (dmo) |
|
Sib Nqus Tau Zoo (χ) |
−33.60·10−6cm3mol |
|
Cov indexial index (nD) |
1.3611 |
| Viscosity | 1.2 Mpa-as (ntawm 20 degree), 1.07 mpa-· s (ntawm 25 degree) |
|
Lub caij dipole |
1.69 D |
Kev siv
- Kaus: dav siv hauv tshuaj, tshuaj, pleev xim thiab number cases kev lag luam los txhim kho cov khoom lag luam zoo {}}
- Cov tshuaj tua kab mob: Nws yog ib qho siv tau hauv kev kho mob thiab kev kho mob kom tsawg dua 75% ethanol daws {}}
- Roj: Nws tuaj yeem siv los ua roj ntxiv lossis siv cov roj hauv qee cov cuab yeej tshwj xeeb .
- Cov Khoom Siv Raw Tshuaj: Siv los npaj cov khoom siv ethets xws li Ethyl acetate,} Nws yog ib qho ntawm cov khoom siv hluav taws xob tseem ceeb rau cov art organic.
Qhov sib txawv ntawm cov ethanol thiab 95% ethanol
Lub zog tsis muaj ethanol feem ntau siv rau kev ntxuav cov khoom siv hluav taws xob siab kom txo cov tshuaj lom neeg uas yuav tsum tau ua rau cov tshuaj lom neeg uas yuav tsum tau ua rau cov khoom siv tshuaj lom neeg, tshuaj pleev xim thiab luam tawm Ink Kev Lag Luam vim nws cov nqi kom zoo tshaj . nyob rau hauv dav dav, 95% ethanol yooj yim kom tau thiab siv tau yooj yim yam tsis muaj kev cuam tshuam kev ua haujlwm {}}
Tuam txhab tau
Hom tau txais txiaj ntsig ntawm Gneegio:
1. Zoo} Cov nqi siab zoo, tus nqi sib tw, kev pabcuam zoo.
2.} nws yog cov neeg siv txoj cai xaiv lub pob .
3. Nws yog tus neeg siv khoom txoj cai xaiv cov kev ntim rau lawv cov khoom los ntawm kev ntim khoom tsis ntev los no.
{{04. Tshwj xeeb} Cov ntaub ntawv tshwj xeeb yog tau thaum tus neeg xaj xaj yog qhov loj txaus, suav nrog cov cai txo qis.
5. Peb lub tuam txhab tau cog lus tseg kom xa cov neeg siv khoom pob rau nws txhais tes kom tau kev ploj thiab kev ua haujlwm tsis txaus thiab ua haujlwm rau hauv.
Cov FAQ
Q: Thaum twg cov zaub mov xa tuaj?
A: Cov zaub mov xa tuaj yuav tau ua nyob rau hauv 5-10 hnub tom qab tau txais kev them nyiaj yug {.
Q: Koj tus qauv los xyuas kom meej qhov zoo ntawm koj cov khoom?
A: Peb nruj ua raws li 6 kauj ruam rau kev tswj hwm zoo, pib los ntawm cov khoom siv raw, pib los ntawm cov khoom lag luam tiav rau cov khoom tiav tawm hauv lub hoobkas.
Q: Yuav ntev npaum li cas rau kuv kom tau txais cov qauv?
A: Peb yuav xa cov qauv tsis pub dhau {{}}}}}}} {{{3} {3} {3} {}5-7 ua haujlwm hnub
Q: Koj txais cov txheej txheem them nqi dab tsi?
A: Peb lees txais 50% them ua ntej lossis 100% them rau pom, lossis lwm txoj kev them nyiaj, yuav tsum sib tham.
Q: Qhov kev txiav txim yam tsawg kawg nkaus?
A: Feem ntau qhov kev txiav txim yam tsawg kawg nkaus yog 1kg, uas tuaj yeem siv ua piv txwv rau cov khoom lag luam tshwj xeeb yog 20 gram .
Q: Koj yuav tswj tau qhov zoo li cas?
A: Peb muaj ntau tshaj 10 xyoo kev hauv kev xa tshuaj chemical, peb cov neeg siv khoom lag luam tau pab peb ua kom muaj sia nyob hauv kev ua lag luam no .
Cim npe nrov: Organic Raw Khoom 95% ethanol lossis ethyl Cawv Cas {1% ethanol lossis ethyl Cawv Cas64-17-5 Cov Khoom Lag Luam, Chaw Tsim Tshuaj, Hoobkas