Cov khoom lag luam
Khoom:
Benzoic acid yog cov dej dawb crystalline, soluble me ntsis hauv dej txias, thiab kuj soluble hauv cov kuab cua organic .
Tshuaj lom neeg: Nws yog acidic thiab muaj peev xwm hnov mob nrog cov hauv paus los ua cov ntsev ua kom zoo .
| Cov lus ntawm ib txoj kab ke | C7H6O2lossis c6H5Cooh |
| Molecular hnyav / moler loj | 122.12 g / mol |
| Ceev | 1.27 g / cm3ntawm 15oC |
| Kub taw tes | 523K |
| Melting taw tes | 395 K |
Siv:
Benzoic acid muaj ntau cov kev siv ntawm cov chav kawm tseem ceeb heev ntawm cov {}}}} hauv cov khoom siv hluavtaws ntawm ntau cov tshuaj; Nyob rau hauv kev tsim cov txuj lom, nws tuaj yeem muab cov khoom lag luam aroma. Nyob rau hauv {} Nyob rau hauv synthesis ntawm dyes .
Cov Ntaub Ntawv Kev Nyab Xeeb:
Benzoic acid yog kev nyab xeeb rau tib neeg ntawm chav sov, tab sis cov kev ceev faj hauv qab no yuav tsum tseem coj:
- Hu rau: Zam kev sib cuag ncaj qha nrog nws ntawm daim tawv nqaij thiab hauv qhov muag . Hais txog dej tam sim ntawd thiab nrhiav kev kho mob.
- Inhalation: zam kev nqus tau ntawm benzoic acid vapor thiab ua haujlwm hauv thaj chaw muaj cua zoo .
- Kev noj haus: Nws muaj qee yam toxicity thiab sab hauv yog nruj me ntsis txwv .
- Cia: Muab nws tso tawm ntawm cov chaw nres nkoj thiab cov neeg sawv cev oxidising kom tiv thaiv nws los ntawm hlawv .
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: 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 .
Q: Koj puas muaj Tshuag?
A: Feem ntau ntawm cov khoom yog nyob rau hauv ib txwm tsim thiab peb tuaj yeem nkoj tam sim ntawd .
Q: Koj puas yog lub Hoobkas lossis lub tuam txhab ua lag luam?
A: Peb yog lub Hoobkas . Peb lub Hoobkas yog nyob hauv Henan xeev, peb zoo siab tos txais cov qhua tuaj noj mov hauv tsev thiab txawv txav tuaj xyuas peb! Peb yuav muab koj cov khoom lag luam zoo thiab cov nqi sib tw raws li ib txwm .
Q: Puas yog nws ua tau siv kuv daim ntawv sau npe tshwj xeeb lossis ntim khoom?
A: Tau kawg koj tuaj yeem .}}} yog tsim nyog, peb tuaj yeem siv daim ntawv lo lossis pob raws li koj cov kev xav tau.
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.
Cim npe nrov: Organic cov ntaub ntawv nyoos benzoic acid cas {}}}}}}} egents} {}} cov chaw tsim khoom, cov chaw tsim khoom, Hoobkas