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Isobutyric acid (CAS#79-31-2)

Ngwongwo kemịkalụ:

Usoro ihe omimi C4H8O2
Molar Mass 88.11
Njupụta 0.95 g/mL na 25 Celsius C (ọkụ)
Ebe Na-agbaze -47 Celsius C (ọkụ ọkụ)
Ebe Boling 153-154 Celsius C (ọkụ)
Ebe mgbari 132°F
Nọmba JECFA 253
Mmiri Solubility 210 g/L (20ºC)
Solubility 618g/l
Uzuoku nrịbama 1.5 mm Hg (20 Celsius C)
Uzuoku Njupụta 3.04 (na ikuku)
Ọdịdị Mmiri mmiri
Agba Kpochapụ enweghị agba
Merck 14,5155
BRN 635770
pKa 4.84 (na 20 ℃)
PH 3.96 (1 mM ngwọta); 3.44 (10 mM ngwọta); 2.93 (100 mM ngwọta);
Ọnọdụ Nchekwa Chekwaa n'okpuru +30 Celsius.
Oke ihe mgbawa 1.6-7.3% (V)
Ntụgharị uche n20/D 1.393 (ọkụ)
Njirimara anụ ahụ na kemịkalụ Mmiri mmiri na-acha mmanụ na-enweghị agba nke nwere isi ísì ụtọ.
ebe agbaze -47 ℃
esi esi 154,5 ℃
njupụta ikwu 0.949
index refractive 1.3930
Ebe nchekwa ọkụ 76.67
solubility bụ miscible na mmiri, soluble na ethanol, ether, wdg.
Jiri A na-ejikarị eme ihe na njikọ nke isobutyric acid ester ngwaahịa, dị ka methyl, Propyl isobutyrate, isoamyl Ester, benzyl ester, wdg, nwere ike iji dị ka oriri na-esi ísì ụtọ, nke a na-ejikwa na ọgwụ ọgwụ.

Nkọwa ngwaahịa

Mkpado ngwaahịa

Akara egwu Xn - na-emerụ ahụ
Koodu ihe egwu 21/22 - na-emerụ ahụ na kọntaktị na akpụkpọ ahụ ma ọ bụrụ na loro ya.
Nkọwapụta nchekwa S23 - Ekula uzuoku.
S36 / 37/39 - Yiri uwe nchebe kwesịrị ekwesị, uwe aka na nchebe anya / ihu.
S24/25 - Zere kọntaktị na akpụkpọ ahụ na anya.
NJ UN UN 2529 3/PG 3
WGK Germany 1
RTECS NQ4375000
FLUKA BRAND F CODES 13
TSCA Ee
Koodu HS 29156000
Klas Hazard 3
Otu nkwakọ ngwaahịa III
Nsi LD50 ọnụ na oke bekee: 266 mg / kg LD50 dermal oke bekee 475 mg / kg

 

Okwu mmalite

Isobutyric acid, nke a makwaara dị ka 2-methylpropionic acid, bụ ngwakọta organic. Ihe na-esonụ bụ nkọwa zuru ezu banyere njirimara, ojiji, ụzọ nkwadebe na ozi nchekwa nke isobutyric acid:

 

Ogo:

Ọdịdị: Mmiri mmiri na-enweghị agba nwere isi ísì pụrụ iche.

Njupụta: 0.985 g/cm³.

Solubility: Solubility na mmiri na ọtụtụ ihe mgbaze organic.

 

Jiri:

Ihe mgbaze: N'ihi ezigbo solubility ya, isobutyric acid na-ejikarị eme ihe dị ka ihe mgbaze, karịsịa na agba, agba, na nhicha.

 

Usoro:

A na-enweta usoro nkwadebe nke isobutyric acid site na oxidation nke butene. Usoro a na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-eme ka a na-eme ya na okpomọkụ dị elu na nrụgide.

 

Ozi nchekwa:

Isobutyric acid bụ kemịkalụ na-emebi emebi nke nwere ike ịkpasu iwe na mmebi mgbe ọ na-akpakọrịta na akpụkpọ ahụ na anya, yana ịkpachara anya kwesịrị ekwesị kwesịrị iyi mgbe ị na-eji ya.

Ikpughe ogologo oge nwere ike ịkpata nkụ, mgbawa, na mmeghachi ahụ nfụkasị ahụ.

Mgbe ị na-echekwa ma na-ejikwa acid isobutyric, ekwesịrị idobe ya ka ọ ghara imeghe ọkụ na oke okpomọkụ iji gbochie ọkụ na mgbawa ihe egwu.


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