Disodium Phosphate Anhydrous
EP, USP (Tested for Endotoxin & Microbes)
CAS #:
7558-79-4
Molecular Formula:
Na2HPO4
Synonym:
Dibasic sodium phosphate, Disodium orthophosphate, Disodium phosphoric acid, Soda phosphate
Molecular Weight:
141.96 g/mol
Overview
Sodium Phosphate Dibasic Anhydrous is typically used as a component in the preparation of phosphate-based buffers. It is also used as a saline laxative to treat constipation or to clean the bowel before a colonoscopy.
| Characters | Unit | Specification |
|---|---|---|
| Appearance | white or almost white, crystalline powder | |
| Assay | % | 98,0 – 100,5 |
| Identification | complies | |
| Insoluble substances | % | max. 0,4 |
| Chloride | ppm | max. 200 (Ph. Eur) |
| % | max. 0,06 (USP) | |
| Sulphate | ppm | max. 500 (Ph. Eur.) |
| % | max. 0,2 (USP) | |
| Arsenic | ppm | max. 2(Ph., Eur) |
| % | max. 16(USP) | |
| Iron | ppm | max. 20 |
| Heavy metals | ppm | max. 10 |
| Reducing Substances | complies | |
| Loss on drying | % | max. 1,0 (Ph. Eur) |
| % | max. 5,0 (USP) | |
| Total aerobic microbial count | cfu/g | max. 100 |
| Total yeasts and moulds count | cfu/g | max. 50 |
| E.coli | cfu/g | absent in 1g |
| Pseudomonas aeruginosa | cfu/g | absent in 1g |
| Staphylococcus aureus | cfu/g | absent in 1g |
| Salmonella | cfu/g | absent in 25g |
| Bacterial endotoxine | IU/g | max. 10 |
Shelf Life/Retest Date: Di-Sodium Phosphate Anhydrous can be kept for at least 2 years if stored under recommended conditions.
Storage/Shipping Conditions:
- Keep container tightly closed in a dry and well-ventilated place.
- Store at room temperature in the original container.
- Store away from incompatible materials.
- Hygroscopic.
Pack Sizes: 5 Kg
