INTRODUCTION
Gallic acid is an organic aromatic compound activated by 3-hydroxyl groups. It is abundant in grapes and leaves of some plants. The acid has excellent antioxidant and medicinal properties and finds uses in many industry verticals.
Manufacture
It is commercially produced by acid hydrolysis of tannin or gallnuts.
| Synonym | 3,4,5-Trihydroxybenzoic acid Pyrogallol-5-carboxylic acid |
| CAS no. | 149-91-7 |
| EINECS no. | 205-749-9 |
| Molecular formula | C7H6O5 |
| Molecular weight | 170.12 |
| Structure |  |
Applications
| API: |
|---|
| Gallic acid itself is a drug having antibacterial, antiviral, and antifungal activities. |
| Intermediates: It is consumed to manufacture |
|---|
| Propyl gallate |
| Pyrogallol |
| Bismuth subgallate |
| n-Octyl gallate |
| Dodecyl gallate |
| Methyl 3,4,5-trihydroxybenzoate |
| Others: |
|---|
| In tanning and leather industries |
| In making raw material for blue/black ink |
| As an additive to increase storage time and oxidation resistance of fats and oil |
| As standard to measure total tannin content in Oak wood powder |
SPECIFICATIONS
| Test | Unit | Specification |
|---|---|---|
| Appearance | – | White to creamy white crystalline powder |
| Solubility | – | Soluble in hot water, 95% ethanol, and acetone |
| LOD at 105°C | % | Max 1.0 |
| ROI | % | Max 0.1 |
| Sulphate | % | Max 0.02 |
| Tannic acid and related substances by TLC | – | Any secondary spot with solution (1) is not more intense than the spot obtained with solution (2) |
| Heavy metals | ppm | Max 20 |
| Arsenic | ppm | Max 4 |
| Assay on dried basis | % | Min 99.00 |
STORAGE
Stored at ambient temperature.
PACKING
25 kg carboard box with inner liner.
REACH Status
Not registered yet.
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