Potassium hydrogen phthalate

Agency

reag. Ph. Eur.

Quality Level

300

product line

EMSURE^®

Assay

≥99.5% dry basis (perchloric acid titration)

form

solid

potency

>3200 mg/kg LD₅₀ oral (Rat)

impurities

≤0.005% In water insoluble matter

loss

≤0.2% loss on drying 105°C

pH

4.0 (20 °C 50 g/L in H₂O)

mp

295-300 °C

density

1.636 g/cm³

bulk density

900 kg/m³

anion traces

chloride (Cl^–): ≤0.002%
sulfur compounds (as SO₄^2-): ≤0.005%

cation traces

Cu: ≤0.0002%
Fe: ≤0.0005%
Na: ≤0.01%
Pb: ≤0.0005%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

InChI

1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H (H 9 10)(H 11 12);/q;+1/p-1

InChI key

IWZKICVEHNUQTL-UHFFFAOYSA-M