Joined: 27 Oct 2014
|Posted: Tue Sep 19, 2017 4:15 am Post subject: Few things about Acetic acid you must know
|Acetic acid which is also known as Ethanoic acid is a colorless organic acid with chemicals formula C2H4O2 is liquid with strong and distinctive pungent and sour smell. Acetic acid got its name from a word “Acetum”, which is a Latin word for vinegar. Because of its presence in vinegar, it’s mostly well known, as the pungent and sour smell is because of acetic acid in vinegar.
Characteristics of acetic acid
Acetic acid is a weak acid.
Glacial Ethanoic acid is very much corrosive to metals.
Boiling point: 118.1 degree Celsius.
Melting point: 16.6 degree Celsius.
Acetic acid is miscible with water.
Acidity: 4.76 pKa, basicity 9.24 pKb and viscosity 1.22 mPa s.
At STP it has liquid state.
Sour in taste and have pungent smell.
Freezes in its purest form. That is why it is also known as glacial acetic acid.
Ph and molarity of Acetic acid:
Ph of acids is dependent upon molarity and normality of the acid.
So, for 1.0 M or for 1N of acetic acid its pH value will be around 2.4.
Molarity and Normality of Acetic acid is 17.4.
Common Uses of Acetic acid:
Acetic acid being a chemical reagent is widely used for chemical compounds production.
The widely use of acetic acid is in the Vinyl Acetate Monomer production, followed by ester and acetic anhydride production.
Acetic acid is used as a solvent mainly as a solvent for inks, paints and coatings.
Acetic acid is used as a coagulant in manufacturing rubber and is also used in manufacturing many dye stuffs and perfumes.
Food industry: Used a a table vinegar and as a preservative.
Medical industry: Acetic acid injection is used to treat cancer and is also used in antiseptic creams. It is also used in the treatment of otitis externa.
How acetic acid is made/ production of acetic acid:
Acetic/Ethnaoic acid is manufactured in industries through synthetically fermentation and bacterial fermentation. Around 75% of acetic acid which is made for use in chemical industries is made through methanol carbonylation which is a process in which carbon monoxide along with methanol reacts to produce acetic acid. Iodomethane is involved as a intermediate in this process. This process appears in three steps:
CH3OH + HI → CH3I + H2O
CH3I + CO → CH3COI
CH3COI + H2O → CH3COOH + HI
Read more: https://goo.gl/Qfboid
chemical data analyst