glacial acetic acid and ethanol_

High Purity Acetic Acid 99.85% for Industrial and Laboratory Applications

The specific gravity of a substance is defined as the ratio of its density to that of water at a reference temperature, usually 4°C or 68°F (3.98°C). For glacial acetic acid, this ratio is notably high due to its minimal water content. Glacial acetic acid contains approximately 99.9% acetic acid by mass, with virtually no water present. In comparison, common laboratory-grade acetic acid typically has a concentration of around 99.7%, and household vinegar contains about 4–5% acetic acid. The lack of water molecules in glacial acetic acid results in a denser solution, which translates to a higher specific gravity.

The percentage of glacial acetic acid in a solution is important because it determines the strength and properties of the acid. The higher the percentage, the more concentrated the acid is, and the more potent it will be in its applications. For example, a solution with 100% glacial acetic acid is considered to be pure acetic acid, while lower percentages are diluted with water.

\[ \text{酢酸 (CH}_3\text{COOH)} + \text{エタノール (C}_2\text{H}_5\text{OH)} \rightleftharpoons \text{酢酸エチル (C}_4\text{H}_8\text{O}_2) + \text{水 (H}_2\text{O)} \]

Glacial Acetic Acid Safety Data Sheet Overview from Sigma Aldrich

Πέρα από τη διατροφή, η 5% γλασιακή ακετική οξύς χρησιμοποιείται και στην καθαριότητα. Είναι αποτελεσματική στην απομάκρυνση λεκέδων, ακαθαρσιών και οσμών. Αυτή η φυσική λύση είναι δημοφιλής για την φιλικότητά της προς το περιβάλλον, σε σύγκριση με πολλές χημικές καθαριστικές ουσίες που μπορεί να είναι επικίνδυνες για την υγεία.