pH standard-Disodium hydrogen , PH value (25 ° C): 6.864 , 7558-79-4
Synonym(s):
Disodium phosphate;Sodium phosphate dibasic;Disodium hydrogen phosphate;Na?HPO?;Sodium hydrogenphosphate
CAS NO.：7558-79-4
Empirical Formula: HNa2O4P
Molecular Weight: 141.96
MDL number: MFCD00003496
EINECS: 231-448-7
| Pack Size | Price | Stock | Quantity |
| 10G | RMB479.20 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | 243-245 °C |
| Density | 1.064 g/mL at 20 °C |
| vapor density | 4.9 (vs air) |
| vapor pressure | 0Pa at 20℃ |
| FEMA | 2398 | DISODIUM PHOSPHATE |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 0.5 M at 20 °C, clear, colorless |
| form | powder |
| color | White |
| PH | 8.9-9.2 (25℃, 50g/L in water) |
| pka | (1) 2.15, (2) 6.82, (3) 12.38 (at 25℃) |
| Odor | odorless |
| Water Solubility | >=10 g/100 mL at 20 ºC |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.019 λ: 280 nm Amax: 0.016 |
| Merck | 14,8659 |
| Stability: | Stable. Incompatible with strong acids. Hygroscopic. |
| InChIKey | BNIILDVGGAEEIG-UHFFFAOYSA-L |
| LogP | -2.15 |
Description and Uses
Sodium phosphate dibasic is highly hygroscopic and water soluble. Useful in conjunction with Sodium Phosphate, Monobasic in the preparation of biological buffers. It is commonly used in biological assay buffers. Sodium is required for nerve and muscle functioning. Sodium Phosphate Dibasic can be used as a dietary supplement and as a nutrient. Sodium hydrogen phosphate is used in food and water treatment in conjunction with trisodium phosphate.In foods, it is used to adjust pH. In water treatment, It retards calcium scale formation. It is also found in some detergents and cleaning agents. This product is known to be Used in many applications including the purification of antibodies. It is used as a saline laxative to treat constipation or to clean the bowel before a colonoscopy.
Sodium Phosphate Dibasic is used as an in conjunction with trisodium phosphate in foods and water treatment. In foods, it is used to adjust pH. In water treatment, It retards calcium scale formation. It is also found in some detergents and cleaning agents. Sodium Phosphate Dibasic is used as a saline laxative to treat constipation or to clean the bowel before a colonoscopy.
Safety
| Symbol(GHS) |  GHS07 |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36-24/25 |
| RIDADR | UN 3077 9 / PGIII |
| WGK Germany | 3 |
| RTECS | WC4500000 |
| F | 3 |
| TSCA | Yes |
| HS Code | 28352200 |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
