1.04873

Potassium dihydrogen phosphate

for analysis EMSURE^® ISO

• Synonym(s): Potassium phosphate monobasic, mono-Potassium orthophosphate, Potassium biphosphate, Potassium phosphate monobasic, Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate
• Linear Formula: KH₂PO₄
• CAS Number: 7778-77-0
• Molecular Weight: 136.09
• MDL number: MFCD00011401
• EC Index Number: 231-913-4

Properties

• Agency: reag. ISO
• Quality Level: 300
• product line: EMSURE^®
• assay: ≥99.5% dry basis (alkalimetric); 99.5-100.5% (alkalimetric)
• form: solid
• potency: >4640 mg/kg LD₅₀, skin (Rabbit)
• technique(s): UV/Vis spectroscopy: suitable
• loss: ≤0.2% loss on drying, 110 °C; ≤0.2% loss on drying, 130 °C
• pH: 4.2-4.6 (20 °C, 20 g/L in H₂O)
• mp: 252.6 °C (lit.)
• solubility: 208 g/L
• density: 2.338 g/mL at 25 °C (lit.)
• bulk density: 1200 kg/m³
• anion traces: chloride (Cl^-): ≤0.0005%; sulfate (SO₄^2-): ≤0.003%
• cation traces: As: ≤0.0002%; Cu: ≤0.0003%; Fe: ≤0.0010%; N: ≤0.001%; Na: ≤0.02%; Pb: ≤0.001%; heavy metals (as Pb): ≤0.0010%
• storage temp.: 2-30°C
• 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

Packaging

250 , 250 g

1 , 5 kg in Plastic bottle

25 , 50 kg in Fibre carton

Analysis Note

Assay (alkalimetric, calculated on dried substance): 99.5 - 100.5 %
Assay (alkalimetric; dried substance): ≥ 99.5 %
pH-value (5 %; water): 4.2 - 4.5
Chloride (Cl): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.003 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0010 %
As (Arsenic): ≤ 0.0002 %
Cu (Copper): ≤ 0.0003 %
Fe (Iron): ≤ 0.0010 %
Na (Sodium): ≤ 0.02 %
Pb (Lead): ≤ 0.001 %
Reducing substances: passes test
Loss on drying (110 °C): ≤ 0.2 %
Loss on drying (130 °C): ≤ 0.2 %
Correspons to ISO

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable