71639
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71639
Fluka
Sodium phosphate dibasic
BioUltra, anhydrous, ≥99.5% (T)
| Synonym: | sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate |
| CAS Number: | 7558-79-4 |
| Linear Formula: | Na2HPO4 |
| Molecular Weight: | 141.96 |
| EC Number: | 231-448-7 |
| MDL number: | MFCD00003496 |
Description
| Other Notes | Primary standard buffer1 |
Properties
| product line | BioUltra |
| assay | ≥99.5% (T) |
| total impurities | insoluble matter, passes filter test |
| ≤0.001% total nitrogen (N) | |
| loss | ≤0.1% loss on drying, 110 °C |
| pH | 8.8-9.4 (25 °C, 0.5 M in H2O) |
| pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
| solubility | H2O: 0.5 M at 20 °C, clear, colorless |
| anion traces | chloride (Cl-): ≤10 mg/kg |
| sulfate (SO42-): ≤50 mg/kg | |
| cation traces | Al: ≤5 mg/kg |
| As: ≤0.2 mg/kg | |
| Ba: ≤5 mg/kg | |
| Bi: ≤5 mg/kg | |
| Ca: ≤10 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| Fe: ≤5 mg/kg | |
| K: ≤50 mg/kg | |
| Li: ≤5 mg/kg | |
| Mg: ≤5 mg/kg | |
| Mn: ≤5 mg/kg | |
| Mo: ≤5 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Sr: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| λ | 0.5 M in H2O |
| UV absorption | λ: 260 nm Amax: 0.025 |
| λ: 280 nm Amax: 0.020 |
Safety
| Personal Protective Equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
| RIDADR | UN3077 9/PG 3 |
| WGK Germany | 1 |
| RTECS | WC4500000 |
Related Products
| Replaced by | 71636, Sodium phosphate dibasic |
References
| Cited Reference | 1. , R.M.C. Dawson, et al., eds. Data for Biochemical Research 3rd ed., Oxford , (1986), 421 |
| Merck | Merck 13,8733 |
| reference | Corp MSDS 1 (2), 3151:D / FT-IR 1 (2), 1267:A / FT-IR 2 (3), 4742:C / RegBook 1 (3), 3425:J / Sax 6, 2441 / Vapor Phase 3, 1480:B |
