Sodium phosphate monobasic
SIGMA/RDD007 - anhydrous, free-flowing, Redi-Dri™, ≥99.0%
Synonym: Monosodium dihydrogen orthophosphate; Monosodium phosphate; Sodium dihydrogen phosphate
CAS Number: 7558-80-7
Empirical Formula (Hill Notation): H2NaO4P
Molecular Weight: 119.98
EC Number: 231-449-2
MDL Number: MFCD00003527
Linear Formula: NaH2PO4
Product Type: Chemical
Loss on Drying Graph
Free-flowing salts
The Redi-Dri™ packaging system eliminates the common issue of clumping that is noted with many hygroscopic salts and buffers and provides free-flowing, ready-to- use material at all times.
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: RDD007-1KG
This image depicts SKU: RDD007-1KG
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: RDD007-2.5KG
This image depicts SKU: RDD007-2.5KG
| application(s) | PFAS testing |
| assay | ≥99.0% |
| form | powder |
| grade | anhydrous |
| InChI | 1S/Na.H3O4P/c;1-5(2,3)4/h |
| InChI key | AJPJDKMHJJGVTQ-UHFFFAOYSA |
| pH | 4.0-4.5 (25 °C, 50 g/L in water) |
| pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
| product line | Redi-Dri™ |
| quality | free-flowing |
| Quality Level | 100  |
| SMILES string | [Na+].OP(O)([O-])=O |
| Application: | Sodium phosphate monobasic can be used: • As a catalyst in the synthesis of non-ionic surfactants used for adhesive and detergent applications. • As a component of phosphate buffer saline (PBS buffer) used in the study of glucose biosensor. |
| General description: | Sodium phosphate is a salt of sodium hydroxide and phosphoric acid. It is commonly used in buffers for molecular biology applications. It can also be used as a catalyst in some organic reactions. |
| Legal Information: | Redi-Dri is a trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 1, 2.5 kg in poly bottle |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99.0% |
| UNSPSC | 12161700 |