Citric acid is white powder or tiny crystals, indorous and salty, easily soluble in water, insoluble in alcohol, presenting slightly alkalinity, decomposed when heating. Decomposed slowly when exposed to moist air. It is used for food loosen agent, acidity modifier, or used in feedstuff, drug, medicine, film, tannage, fiber and rubber, or used as detergent and firefight.
Citric acid monohydrate
| Item | BP | E330 | USP | FCC | EP | JSFA | GB |
| Appearance | Colorless or white crystal |
| Light Transmittance | pass test |
| pass test |
|
|
| ≥95% |
| Assay | 99.5%-100.5% | ≥99.5% | 99.5%-100.5% | 99.5%-100.5% | 99.5%-100.5% | 99.5%-100.5% | 99.5%-100.5% |
| Water | 7.5-9.0% | ≤8.8% | 7.5-9.0% | ≤8.8% | 7.5-9.0% | ≤8.8% | 7.5-9.0% |
| Sulphated Ash | ≤0.1% | ≤0.1% | ≤0.1% | ≤0.1% | ≤0.1% | ≤0.1% | ≤0.1% |
| Sulpate | ≤150ppm |
| ≤150ppm | / | / | ≤480ppm | ≤150ppm |
| Oxalate | ≤360ppm | ≤100ppm | ≤360ppm |
| ≤360ppm |
| ≤100ppm |
| Calcium | / | / | / | / | / | / | ≤200ppm |
| Heavy Metals | ≤10ppm | ≤5ppm | ≤10ppm |
| ≤10ppm | ≤10ppm |
|
| Iron | / | / | / | / | / | / | ≤5ppm |
| Chloride | / | / | / | / | / | / | ≤50ppm |
| Readily carbureted substances | / | / | / | / | / | / | k≤1.0 |
| Bacterial endotoxins | ≤0.5IU/mg | / | / | / | ≤0.5IU/mg | / | / |
| Aluminium | ≤0.2ppm | / | ≤0.2ppm |
| ≤0.2ppm | / | / |
| Arsenic | / | ≤1ppm | / | / | / | ≤4ppm | ≤1ppm |
| Mercury | / | ≤1ppm | / | / | / | / | / |
| Lead | / | ≤1ppm | / | ≤0.5ppm | / | / | / |
| Tridodecylamine | / | / | / | ≤0.1ppm | / | / | / |
Citric acid anhydrous alias
BETZ 0623,BETZ 6251,Citric acid,Citric acid anhydrous,Citric acid anhydride,BUFFER CONCENTRATE, PH 9.00,BUFFER CONCENTRATE, PH 8.00,BUFFER CONCENTRATE, PH 7.00,2-hydroxypropane-1,2,3-tricarboxylate,2-Hydroxy-1,2,3-propanetricarboxylic acid,BORIC ACID-POTASSIUM CHLORIDE-SODIUM HYDROXIDE BUFFER,Citric acid, anhydrous, USP Grade 1,2,3-Propanetricarboxylic acid, 2 hydroxy-citric acid, anhydrous, USP Grade
Citric acid anhydrous
| Item | BP | E330 | USP | FCC | EP | JSFA | GB |
| Appearance | Colorless or white crystal |
| Light Transmittance | pass test |
| pass test |
|
|
| ≥96% |
| Assay | 99.5%-100.5% | ≥99.5% | 99.5%-100.5% | 99.5%-100.5% | 99.5%-100.5% | ≥99.5% | 99.5%-100.5% |
| Water | ≤1.0% | ≤0.5% | ≤1.0% | ≤0.5% | ≤1.0% | ≤0.5% | ≤0.5% |
| Sulphated Ash | ≤0.1% | ≤0.05% | ≤0.1% | ≤0.05% | ≤0.1% | ≤0.1% | ≤0.05% |
| Sulpate | ≤150ppm | / | ≤150ppm | / | Pass test | ≤480ppm | ≤100ppm |
| Oxalate | ≤360ppm | ≤100ppm | ≤360ppm |
| ≤360ppm | Pass test | ≤100ppm |
| Calcium | / | / | / | / | / | / | ≤200ppm |
| Heavy Metals | ≤10ppm | ≤5ppm | ≤10ppm | / | ≤10ppm | ≤10ppm | / |
| Iron | / | / | / | / | / | / | ≤5ppm |
| Chloride | / | / | / | / | / | / | ≤50ppm |
| Readily carbureted substances | / | / | / | / | / | / | k≤1.0 |
| Bacterial endotoxins | ≤0.5IU/mg | / | / | / | ≤0.5IU/mg | / | / |
| Aluminium | ≤0.2ppm | / | ≤0.2ppm |
| ≤0.2ppm | / | / |
| Arsenic | / | ≤1ppm | / | / | / | ≤4ppm | ≤1ppm |
| Mercury | / | ≤1ppm | / | / | / | / | / |
| Lead | / | ≤1ppm | / | ≤0.5ppm | / | / | / |
| Tridodecylamine | / | / | / | ≤0.1ppm | / | / | / |