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81910

Sigma-Aldrich

Propionic acid

puriss. p.a., ≥99.5% (GC)

Synonym(s):
Acid C3, Propanoic acid, Propanyl acid
Linear Formula:
CH3CH2COOH
CAS Number:
Molecular Weight:
74.08
Beilstein:
506071
EC Number:
MDL number:
eCl@ss:
39021305
PubChem Substance ID:

vapor density

2.55 (vs air)

Quality Level

vapor pressure

2.4 mmHg ( 20 °C)

grade

puriss. p.a.

assay

≥99.5% (GC)

form

liquid

autoignition temp.

955 °F

expl. lim.

12.1 %

refractive index

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

bp

141 °C (lit.)

mp

−24-−23 °C (lit.)

solubility

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

density

0.993 g/mL at 25 °C (lit.)

cation traces

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

SMILES string

CCC(O)=O

InChI

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

InChI key

XBDQKXXYIPTUBI-UHFFFAOYSA-N

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General description

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.

Application

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

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

129.2 °F - closed cup

Flash Point(C)

54 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

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