Acetic Acid, systematically named ethanoic acid, is an organic compound with the chemical formula CH3COOH (also written as CH3CO2H or C2H4O2). It is a colorless liquid that when undiluted is also called glacial acetic acid. Vinegar is roughly 3-9% acetic acid by volume, making acetic acid the main component of vinegar apart from water. Acetic acid has a distinctive sour taste and pungent smell. Besides its production as household vinegar, it is mainly produced as a precursor to polyvinylacetate and cellulose acetate. Although it is classified as a weak acid, concentrated acetic acid is corrosive and can attack the skin.
Acetic acid is the second simplest carboxylic acid (after formic acid) and is an important chemical reagent and industrial chemical, mainly used in the production of cellulose acetate for photographic film and polyvinyl acetate for wood glue, as well as synthetic fibers and fabrics. In households, diluted acetic acid is often used in descaling agents. In the food industry, acetic acid is used under the food additive code E260 as an acidity regulator and as a condiment. As a food additive it is approved for usage in many countries, including Canada, the European Union, the United States, and Australia and New Zealand.
The global demand of acetic acid is around 6.5 million tons per year (Mt/a), of which approximately 1.5 Mt/a is met by recycling; the remainder is manufactured from petrochemical feed-stock. As a chemical reagent, biological sources of acetic acid are of interest, but generally noncompetitive. Vinegar is dilute acetic acid, often produced by fermentation and subsequent oxidation of ethanol.
Source: Wikipedia
Acetic Acid
Chromatogram(s) using Benson Polymeric Columns
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
DI H2O
0.4 ml/min
RI
Ambient
20 ul, 30 mg/ml
300 x 7.8 mm
6% H
2 – Maltose
3 – Glucose
4 – Fructose
5 – Glycerol
6 – Acetic Acid
7 – Methanol
8 – Ethanol
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
0.10% H3PO4
0.5 ml/min
UV 210nm
Ambient
20 ul, 30 mg/ml
300 x 7.8 mm
8% H
2 – Citric Acid
3 – Tartaric Acid
4 – Malic Acid
5 – Succinic Acid
6 – Formic Acid
7 – Acetic Acid
8 – Fumaric Acid
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
0.003 N H2SO4
0.5 ml/min
Conductivity
Ambient
20 ul, 30 mg/ml
300 x 7.8 mm
8% H
2 – Maleic Acid
3 – Malic Acid
4 – Succinic Acid
5 – Formic Acid
6 – Acetic Acid
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
0.5 mM H2SO4
0.6 ml/min
RI
50 C
20 ul, 30 mg/ml
250 x 7.8 mm
8% H
2 – Glucose
3 – Fructose
4 – Succinic Acid
5 – Lactic Acid
6 – Glycerol
7 – Acetic Acid
8 – Ethanol
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
0.003 N H2SO4
0.7 ml/min
RI
Ambient
20 ul, 30 mg/ml
100 x 7.8 mm
8% H
2 – Acetic Acid
3 – Ethanol
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
DI H2O
0.5 ml/min
RI
35 C
20 ul, 30 mg/ml
300 x 7.8 mm
8% H
2 – Glucose
3 – Fructose
4 – Succinic Acid
5 – Glycerol
6 – Acetic Acid
7 – Methanol
8 – Ethanol
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