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di-Sodium hydrogen phosphate anhydrous
Product Identifier
| Product Code |
TC051M |
| Molecular weight |
141.96 |
| Molecular formula |
Na₂HPO₄ |
| CAS No. |
7558-79-4 |
Quality Control
| Appearance (USP) |
White powder that readily absorb moisture |
| Appearance (EP, BP) |
White or almost white powder, hygroscopic |
| Solubility (USP) |
Freely soluble in water; insoluble in alcohol |
| Solubility (EP, BP) |
Soluble in water, practically insoluble in ethanol (96%) |
| Appearance of solution (EP, BP) |
5% solution in water is clear and colourless |
| Identification A (USP) |
Reactions for sodium |
| Identification A (EP, BP) |
5% solution in water is slightly alkaline |
| Identification B (USP) |
Reactions for phosphate |
| Identification B : LOD (EP, BP) |
≤ 1.0% (at 105°C, 4hr) |
| Identification C (EP, BP) |
5% solution in water gives reaction (b) of phosphate |
| Identification D (EP, BP) |
5% solution in water gives reaction (a) of sodium |
| Arsenic (USP) |
≤ 0.0016% |
| Arsenic (EP, BP) |
≤ 0.0002% |
| Chloride (USP) |
≤ 0.06% |
| Chloride (EP, BP) |
≤ 0.02% |
| Iron (EP, BP) |
≤ 0.002% |
| Sulphate (USP) |
≤ 0.2% |
| Sulphate (EP, BP) |
≤ 0.05% |
| Reducing substances (EP, BP) |
The colour of the permanganate is not completely discharged |
| Insoluble substances (USP) |
≤ 0.4% |
| Monosodium phosphate (EP, BP) |
≤ 2.5% |
| Loss on drying: (at 130°C, 2hr) (USP) |
≤ 5.00% |
| Loss on drying (at 105°C, 4hr) (EP, BP) |
≤ 1.00% |
| Assay (NaOH T, dried basis) (USP) |
98.00 - 100.50% |
| Assay (NaOH T, dried substance) (EP, BP) |
98.00 - 101.00% |
Storage and Shelf Life
| Storage |
Store below 30°C away from bright light. |
| Shelf life |
48 months. |
| Use before expiry date |
Use before expiry date given on the product label. |
CAS Number :
7558-79-4
Molecular Formula :
Na₂HPO₄
More Information
| Product Name |
di-Sodium hydrogen phosphate anhydrous |
| SKU |
TC051M |
| CAS No |
7558-79-4 |
| EC No. |
231-448-7 |
| Molecular formula |
Na₂HPO₄ |