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81910

Sigma-Aldrich

Propionic acid

puriss. p.a., ≥99.5% (GC)

Sinônimo(s):

Acid C3, Propanoic acid, Propanyl acid

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About This Item

Fórmula linear:
CH3CH2COOH
Número CAS:
Peso molecular:
74.08
Beilstein:
506071
Número CE:
Número MDL:
Código UNSPSC:
12352100
eCl@ss:
39021305
ID de substância PubChem:
NACRES:
NA.21

densidade de vapor

2.55 (vs air)

Nível de qualidade

pressão de vapor

2.4 mmHg ( 20 °C)

grau

puriss. p.a.

Ensaio

≥99.5% (GC)

forma

liquid

temperatura de autoignição

955 °F

Lim. expl.

12.1 %

índice de refração

n20/D 1.386 (lit.)
n20/D 1.386

pb

141 °C (lit.)

pf

−24-−23 °C (lit.)

solubilidade

organic solvents: soluble(lit.)
water: soluble(lit.)

densidade

0.993 g/mL at 25 °C (lit.)

traços de cátion

Al: ≤0.5 mg/kg
Ba: ≤0.1 mg/kg
Bi: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.1 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.5 mg/kg
K: ≤0.5 mg/kg
Li: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Mo: ≤0.1 mg/kg
Na: ≤1 mg/kg
Ni: ≤0.1 mg/kg
Pb: ≤0.1 mg/kg
Sr: ≤0.1 mg/kg
Zn: ≤0.1 mg/kg

cadeia de caracteres SMILES

CCC(O)=O

InChI

1S/C3H6O2/c1-2-3(4)5/h2H2,1H3,(H,4,5)

chave InChI

XBDQKXXYIPTUBI-UHFFFAOYSA-N

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Descrição geral

Propionic acid is a linear monocarboxylic acid. It affords esters on reaction with alcohols or alkenes. It can be synthesized by reacting ethane, carbon monoxide and water. It participates as a precursor in the preparation of smallest azolium homoenolate intermediate.

Aplicação

Propionic acid may be used in the synthesis of cellulose propionate (cellulose ester).

Palavra indicadora

Danger

Frases de perigo

Classificações de perigo

Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B - STOT SE 3

Órgãos-alvo

Respiratory system

Código de classe de armazenamento

3 - Flammable liquids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

129.2 °F - closed cup

Ponto de fulgor (°C)

54 °C - closed cup

Equipamento de proteção individual

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Direct β-carbon activation of propionic acid (C2H5CO2H) by carbene organocatalysis has been developed. This activation affords the smallest azolium homoenolate intermediate (without any substituent) as a 3-carbon nucleophile for enantioselective reactions. Propionic acid is an excellent raw material because it
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