Acetic acid

Description

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Acetic acid, also known as  Ethylic acid with CH₃COOH formula, is safe to handle, cost efficient, and easy to recover, by its extensive use in different fields. It is an important bulk chemical that is nowadays produced through methanol carbonylation (CH₃OH+CO→CH₃COOH).

Properties

Chemical formula	C2H4O2 or CH3COOH
Molar mass	60.052 g·mol−1
Appearance	Colourless liquid
Odor	Punget vinegar-like
Density	1.049 g cm−3 (liquid); 1.27 g cm−3 (solid)
Melting point	16 to 17 °C; 61 to 62 °F; 289 to 290 K
boiling point	118 to 119 °C; 244 to 246 °F; 391 to 392 K
Acidity (pKa)	4.756
Chemical structure

Also, glacial acetic acid, that is a pure acetic acid and entirely soluble in water, is a colorless, corrosive liquid with boiling point 117.9 °C (244.2 °F) and melting point 16.6 °C (61.9 °F).

Crystallography

Acetic acid crystals are orthorhombic, space group Pna2₁, with a= 13.324±0.02, b = 4.08±0-01, c= 5.774±0.01 Å from single-crystal X-ray diffraction. The structure is similar to that of formic acid with molecules linked into infinite chains by hydrogen bonds. The bond distances are C-C = 1.54 Å, C=O = 1.24 Å, C-O = 1.29 Å, and O-H • • • O = 2.61 Å, each ±0.02 Å, by least-squares refinement. The four heavy atoms of each molecule stand in a plane. The coherence between chains is due to van der Waals forces.

Applications

Acetic acid is one of the most widely used materials in today’s industrial society, which we will discuss the most important applications of this material in below.

Acetic acid is used in lots of industrial processes for the production of substrates and it’s often a chemical reagent for the production of chemical compounds. Acetic acid has largest use in the production of materials such as vinyl acetate monomer. also Glacial acetic acid used in recrystallization as solvent because it can purify organic compounds.

The imperative use of acetic acid is the production of vinyl acetate monomer (VAM). In 2008, this application was estimated to consume a third of the world’s production of acetic acid.

Solvents of inks and paints are made by acetic acid and related alcohol that is a kind of the main esters of acetic acid.

Almost nearly 30% of the global production is used in production of acetic anhydride; so it can be called that one of the significant applications.

Safety information

Hazards of solutions of acetic acid belong to the concentration. The following table lists the EU Classification of acetic acid solutions:

NOTEs:

• Flammable liquid and vapor [Warning Flammable liquids]
• Causes intense skin burns and eye injury [Danger Skin corrosion/irritation]
• When spilled in water all forms will mix rapidly and produce an irritating vapor.

PRODUCT DESCRIPTION: Acetic acid is used in foods as a flavor enhancer and flavoring agent; an acidifier, color diluent, curing, and pickling agent, pH control agent, solvent, and preservative.

Product Name: Acetic acid

CAS Number: 64-19-7

E Number: E260

Product Specification