Citric acid is a weak organic tribasic acid. It occurs naturally in citrus fruits. In biochemistry, it is an intermediate in the citric acid cycle, which occurs in the metabolism of all aerobic organisms.
| Citric Acid, Anhydrous, GR 99%+ - Specifications | |
| Synonyms | 2-Hydroxy-1,2,3-propanetricarboxylic acid anhydrous |
| Description | White crystalline powder |
| Grade | AR / GR |
| Purity | 99.5 - 100.5% |
| HSN Code | 29181400 |
| Identity (IR Spectrum) | Passes test |
| Insoluble matter in H2O | Max. 0.005% |
| Heavy metals (as Pb) | Max. 0.0005% |
| Iron (Fe) | Max. 0.0003% |
| Sulphate (SO4) | Max. 0.005% |
| Phosphate (PO4) | Max. 0.001% |
| Oxalate (as C2H2O4) | Passes test |
| Lead (Pb) | Max. 0.0002% |
| Arsenic (As) | Max. 0.0001% |
| Mercury (Hg) | Max. 0.0001% |
| Water (Karl fischer) | Max. 0.5% |
| Sulphated ash (600°C) | Max. 0.02% |
| Substance carbonizable by hot H2SO4 | Passes test |
| Chloride (Cl) | Max. 0.001% |
| Citric Acid, Anhydrous, 99% Extra Pure - Specifications | |
| Categories | Carbonyl compounds, Carboxylic acids |
| Grade | Extra Pure |
| Assay | 99% |
| Appearance (Form) | Crystalline powder |
| Appearance (Colour) | White |
| Melting point | 153-159 °C(lit.) |
| HSN Code | 29181400 |