| Synonyms | Monosodium citrate
Monobasic sodium citrate
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| Definition | |
| Chemical name | Monosodium citrate |
| Monosodium salt of 2-hydroxy-1,2,3-propanetricarboxylic acid |
| Chemical formula | |
(b) C6H7O7Na· H2O (monohydrate)
|
| Molecular weight | |
| |
| Assay | Content not less than 99 % on the anhydrous basis |
| Description | Crystalline white powder or colourless crystals |
| Identification | |
A.Positive tests for citrate and for sodium | |
| Purity | |
| Loss on drying | Determined by drying at 180 oC for four hours:
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| Oxalates | Not more than 100 mg/kg expressed as oxalic acid, after drying |
| pH of a 1 % aqueous solution | Between 3,5 and 3,8 |
| Arsenic | Not more than 1 mg/kg |
| Lead | Not more than 1 mg/kg |
| Mercury | Not more than 1 mg/kg |
| Heavy metals (as Pb) | Not more than 5 mg/kg |
