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Isobutyric acid (CAS # 79-31-2)

Chemical Property:

Molecular Formula C4H8O2
Molar Mass 88.11 ib
Qhov ntom 0.95 g / mL ntawm 25 ° C (lit.)
Melting Point -47 ° C (lit.)
Boling Point 153-154 ° C (lit.)
Flash Point 132 ° F
JECFA Number 253
Dej Solubility 210 g / L (20 ºC)
Solubility 618g/l ua
Vapor Siab 1.5 hli Hg (20 ° C)
Vapor Density 3.04 (vs huab cua)
Qhov tshwm sim Ua kua
Xim Ntshiab xim tsis muaj xim
Merck 14, 5155 ib
BRN 635770 ua
pKa 4.84 (ntawm 20 ℃)
PH 3.96 (1 mM tov); 3.44 (10 mM tov); 2.93 (100 mM tov);
Kev cia khoom Khaws hauv qab +30 ° C.
Explosive txwv 1.6-7.3% (V)
Refractive Index n20/D 1.393 (lit.)
Physical thiab Chemical Properties Colorless oily kua nrog muaj zog pungent tsw.
melting point -47 ℃
Kub taw tes 154.5 ℃
txheeb ze ntom ntom 0.949
Refractive Index 1.3930
lus 76.67
solubility yog miscible nrog dej, soluble hauv ethanol, ether, thiab lwm yam.
Siv Feem ntau yog siv rau hauv kev sib txuas ntawm isobutyric acid ester cov khoom, xws li methyl, Propyl isobutyrate, isoamyl Ester, benzyl ester, thiab lwm yam, tuaj yeem siv los ua cov txuj lom noj tau, kuj siv tau rau hauv cov tshuaj.

Product Detail

Khoom cim npe

Hazard Cov Cim Xn – Ua phem
Risk Codes 21/22 - Ua phem rau ntawm daim tawv nqaij thiab yog tias nqos.
Kev nyab xeeb piav qhia S23 - Tsis txhob ua pa.
S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag.
S24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag.
UN IDs UN 2529 3/PG 3
WGK Germany 1
RTECS NQ4375000
FLUKA BRAND F CODE 13
TSCA Yog lawm
HS Code 29156 000 ib
Hazard Class 3
Packing Group III
Toxicity LD50 qhov ncauj hauv luav: 266 mg/kg LD50 dermal luav 475 mg/kg

 

Taw qhia

Isobutyric acid, tseem hu ua 2-methylpropionic acid, yog cov organic compound. Cov hauv qab no yog cov lus qhia ntxaws txog cov khoom, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb ntawm isobutyric acid:

 

Zoo:

Cov tsos mob: Cov kua xim tsis muaj xim nrog cov ntxhiab tsw tshwj xeeb.

Qhov ceev: 0.985 g / cm³

Solubility: Soluble hauv dej thiab ntau cov kuab tshuaj organic.

 

Siv:

Cov kuab tshuaj: Vim nws cov solubility zoo, isobutyric acid yog dav siv los ua cov kuab tshuaj, tshwj xeeb tshaj yog nyob rau hauv cov xim, xim, thiab cov tshuaj ntxuav.

 

Txoj kev:

Ib hom kev npaj ntawm isobutyric acid yog tau los ntawm oxidation ntawm butene. Cov txheej txheem no yog catalyzed los ntawm ib qho catalyst thiab yog nqa tawm ntawm qhov kub thiab txias.

 

Cov ntaub ntawv kev nyab xeeb:

Isobutyric acid yog cov tshuaj corrosive uas tuaj yeem ua rau khaus thiab puas thaum sib cuag nrog daim tawv nqaij thiab qhov muag, thiab kev ceev faj tsim nyog yuav tsum tau hnav thaum siv nws.

Kev raug mus ntev yuav ua rau qhuav, tawg, thiab ua xua.

Thaum khaws cia thiab tuav isobutyric acid, nws yuav tsum khaws cia kom deb ntawm qhov qhib nplaim taws thiab kub kub kom tsis txhob muaj hluav taws kub thiab tawg.


  • Yav dhau los:
  • Tom ntej:

  • Sau koj cov lus ntawm no thiab xa tuaj rau peb