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Sodium propanoate or sodium propionate is the sodium salt of propionic acid which has the chemical formula Na(C2H5COO). This white crystalline solid is deliquescent in moist air. It is used primarily as a mold inhibitor in bakery products. It is approved for use as a food additive.
| Product Name | SODIUM PROPIONATE BP/EP/USP |
| Synonym | |
| Product Code | SODI08 |
| Chemical Formula | C3H5NaO2 |
| Molecular Weight | 96.060 g/mol |
| CAS No. | 137-40-6 |
| Standard Pack Size | 25 KG |
| Storage | Store in cool and dry place. |
| Retest Period | 1 YEAR |
| Application |
| Sr. No. | Test | Specifications | Reference |
| 1. | Description | Colourless crystals, or white or almost white powder, slightly hygroscopic | BP/EP/USP |
| 2. | Solubility | Freely soluble in water, sparingly soluble in alcohol, practically insoluble in methylene chloride. | BP/EP/USP |
| 3. | Identification | (A) By infrared absorption spectrophotometry (B) Both upper and lower layer show a blue colour. (C) To 5 ml sol. S add 2 ml of 0.1 M silver nitrate, a white precipitates formed. (D) Solution S gives reaction of sodium. | (A)&(D) BP/EP/USP (B)&(C) BP/EP |
| 4. | Appearance of solution | Solution S is clear and colourless. | BP/EP |
| 5. | pH (2 % solution) | 7.8 – 9.2 | BP/EP |
| 6. | Related substances | (A) Any impurity: NMT 0.1% (B) Total impurity: NMT 0.5% (C) Discharged limit : NMT 0.05% | BP/EP |
| 7. | Readily oxidisable substances | The difference between the volumes used in the 2 titrations is not more greater than 2.2 ml. | BP/EP |
| 8. | Alkalinity | Should pass the test. | USP |
| 9. | Heavy metals | Not more than 0.001 % w/w | BP/EP/USP |
| 10. | Iron | Not more than 0.001 % w/w | BP/EP |
| 11. | Water | Not more than 1.0 % w/w. | USP |
| 12. | Loss on drying | Not more than 0.5 % w/w. | BP/EP |
| 13. | Assay | (A) 99.0 % w/w to 101.0 % w/w (B) 99.0 % w/w to 100.5 % w/w | (A) BP/EP (B) USP |