PX1476
Potassium Hydrogen Phthalate
Meets ACS Specifications GR ACS
Synonym(s):
Potassium Hydrogen Phthalate, Potassium Biphthalate, Potassium Acid Phthalate
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SMILES string
[K+].[O-]C(=O)c1c(cccc1)C(=O)[O-].[H+]
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
grade
ACS reagent
assay
99.95-100.05% dry basis
form
solid
impurities
≤0.002% Sulfur compounds (as S), ≤0.005% Insoluble matter
color
white
pH
4.0 (20 °C, 50 g/L in H2O)
mp
295-300 °C
solubility
80 g/L
anion traces
chloride (Cl-): 0.003%
cation traces
Fe: ≤5 ppm, Na: ≤0.005%, heavy metals (as Pb): ≤5 ppm
shipped in
ambient
storage temp.
room temp
Quality Level
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Related Categories
1 of 4
This Item | |||
|---|---|---|---|
| form solid | form - | form crystals | form solid |
| solubility 80 g/L | solubility - | solubility - | solubility - |
| assay 99.95-100.05% dry basis | assay - | assay - | assay ≥99.5% dry basis (perchloric acid titration) |
| Quality Level 200 | Quality Level - | Quality Level 100 | Quality Level 300 |
| cation traces Fe: ≤5 ppm, heavy metals (as Pb): ≤5 ppm, Na: ≤0.005% | cation traces - | cation traces - | cation traces Cu: ≤0.0002%, Fe: ≤0.0005%, Na: ≤0.01%, Pb: ≤0.0005%, heavy metals (as Pb): ≤0.0005% |
| anion traces chloride (Cl-): 0.003% | anion traces - | anion traces - | anion traces chloride (Cl-): ≤0.002%, sulfur compounds (as SO42-): ≤0.005% |
Application
Analysis Note
wgk
WGK 1
flash_point_f
387.1 °F - Pensky-Martens closed cup
flash_point_c
197.3 °C - Pensky-Martens closed cup
Storage Class
11 - Combustible Solids
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