P9791

Potassium phosphate monobasic

for molecular biology, ≥98.0%

• Synonym(s): Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate
• Linear Formula: KH₂PO₄
• CAS Number: 7778-77-0
• Molecular Weight: 136.09
• EC Number: 231-913-4
• MDL number: MFCD00011401
• UNSPSC Code: 12161700
• PubChem Substance ID: 24898921
• NACRES: NA.21

Properties

• grade: for molecular biology
• assay: ≥98.0%
• form: powder
• pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• mp: 252.6 °C (lit.)
• solubility: H₂O: 100 mg/mL
• density: 2.338 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤10 ppm
• cation traces: Fe: ≤20 ppm; heavy metals (as Pb): ≤10 ppm
• application(s): diagnostic assay manufacturing
• foreign activity: DNase, Exonuclease; NICKase, Endonuclease; RNase and protease, none detected
• SMILES string: [K+].OP(O)([O-])=O
• InChI: 1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
• InChI key: GNSKLFRGEWLPPA-UHFFFAOYSA-M

Description

Application

Potassium phosphate monobasic has been used:

• in high-throughput fluorescence assay of cytochrome P450 3A4
• in morphological analysis of neuromuscular junction development and degeneration in rodent lumbrical muscles
• in the measurement of net high-affinity urea uptake in maize plants

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)