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I-Isobutyric acid(CAS#79-31-2) Isithombe Esifakiwe
  • I-Isobutyric acid(CAS#79-31-2) 1

I-Isobutyric acid(CAS#79-31-2)

Isakhiwo Samakhemikhali:

I-Molecular Formula C4H8O2
I-Molar Mass 88.11
Ukuminyana 0.95 g/mL ku-25 °C (okhanyisiwe)
I-Melting Point -47 °C (ukukhanya)
I-Boling Point 153-154 °C (okhanyisiwe)
I-Flash Point 132°F
Inombolo ye-JECFA 253
Ukuncibilika kwamanzi 210 g/L (20 ºC)
Ukuncibilika 618g/l
I-Vapor Presure 1.5 mm Hg ( 20 °C)
I-Vapor Density 3.04 (vs air)
Ukubukeka Uketshezi
Umbala Sula engenambala
I-Merck 14,5155
I-BRN 635770
pKa 4.84(ku-20℃)
PH 3.96(1 mM isisombululo);3.44(10 mM isixazululo);2.93(100 mM isixazululo);
Isimo Sesitoreji Gcina ngaphansi kuka +30°C.
Umkhawulo Oqhumayo 1.6-7.3%(V)
I-Refractive Index n20/D 1.393(lit.)
Izakhiwo Zomzimba Nezamakhemikhali Uketshezi olunamafutha angenambala olunephunga elimnandi elinamandla.
indawo encibilikayo -47 ℃
iphoyinti abilayo 154.5 ℃
ukuminyana okuhlobene 0.949
inkomba ye-refractive 1.3930
iphoyinti elikhanyayo 76.67
ukuncibilika kuhlangana namanzi, kuncibilika ku-ethanol, ether, njll.
Sebenzisa Isetshenziswa kakhulu ekuhlanganisweni kwemikhiqizo ye-isobutyric acid ester, efana ne-methyl, i-Propyl isobutyrate, i-isoamyl Ester, i-benzyl ester, njll., ingasetshenziswa njengezinongo ezidliwayo, iphinde isetshenziswe kwezokwelapha.

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Izimpawu Eziyingozi I-Xn - Iyingozi
Amakhodi Engozi 21/22 - Kuyingozi ukuthintana nesikhumba futhi uma kugwinywe.
Incazelo Yokuphepha S23 – Ungawuphefumuli umhwamuko.
S36/37/39 – Gqoka izingubo zokuzivikela ezifanele, amagilavu ​​kanye nokuvikela iso/ubuso.
I-S24/25 - Gwema ukuthintana nesikhumba namehlo.
Ama-ID e-UN UN 2529 3/PG 3
I-WGK Germany 1
I-RTECS NQ4375000
AMAKHODI E-FLUKA BRAND F 13
I-TSCA Yebo
Ikhodi ye-HS 29156000
I-Hazard Class 3
Iqembu Lokupakisha III
Ubuthi I-LD50 ngomlomo kuNogwaja: 266 mg/kg LD50 dermal Rabbit 475 mg/kg

 

Isingeniso

I-Isobutyric acid, eyaziwa nangokuthi i-2-methylpropionic acid, iyinhlanganisela yezinto eziphilayo. Okulandelayo isingeniso esinemininingwane yezakhiwo, ukusetshenziswa, izindlela zokulungiselela kanye nolwazi lokuphepha lwe-isobutyric acid:

 

Ikhwalithi:

Ukubukeka: Uketshezi olungenambala olunephunga elimnandi elikhethekile.

Ukuminyana: 0.985 g/cm³.

I-Solubility: Incibilika emanzini kanye nezincibilikisi eziningi eziphilayo.

 

Sebenzisa:

Izincibilikisi: Ngenxa yokuncibilika kwayo okuhle, i-isobutyric acid isetshenziswa kakhulu njengesixazululi, ikakhulukazi kumapende, opende, nezihlanzi.

 

Indlela:

Indlela evamile yokulungiselela i-isobutyric acid itholakala nge-oxidation ye-butene. Le nqubo yenziwa yi-catalyst futhi yenziwa emazingeni okushisa aphezulu kanye nezingcindezi.

 

Ulwazi Lokuphepha:

I-Isobutyric acid iyikhemikhali edlayo engabangela ukucasuka nokulimala lapho ithinta isikhumba namehlo, futhi kufanele kugqokwe izinyathelo ezifanele zokuqapha lapho uyisebenzisa.

Ukuchayeka isikhathi eside kungase kubangele ukoma, ukuqhekeka, kanye nokungezwani komzimba.

Lapho ugcina futhi uphatha i-isobutyric acid, kufanele igcinwe kude namalangabi avulekile namazinga okushisa aphezulu ukuvimbela izingozi zomlilo neziqhumane.

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