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HPLC Buffer Salts
POTASSIUM HYDROGEN PHTHALATE
POTASSIUM HYDROGEN PHTHALATE For HPLC
KHP; Phthalic acid monopotassium salt, Potassium biphthalate; Potassium phthalate monobasic
Article No.
05371
Grade
For HPLC
Purity
99.5%
CAS No.
877-24-7
Molecular Formula
C
8
H
5
KO
4
Molecular Weight
204.22
H.S. Code
2917.3990
Shelf Life
60 Months
MSDS
DE
EN
FR
KO
PT
ES
TH
TR
Certificate of Analysis (COAs)
Physical Properties
Physical state at 20 °C
Solid
Colour
White crystalline
Odour
Odorless
pH value
3.8 - 4.0 (5% aq. sol.)
Melting point/ Freezing point [°C]
295 - 300 °C
Density [g/cm3]
1.64
Solubility in water [% weight]
80 g/L @ 20°C
Packings
500 g
(00500)
Specifications
Appearance
White crystalline powder
Assay
Min 99.5%
Filter test
In accordance
Solubility (100 mg/mL in water)
Complete, colourless
pH
3.5 - 5.0
UV absorbance (10% solution in water)
at 330 nm
Amax : <0.05
at 340 nm
Amax : <0.03
at 350 nm
Amax : <0.02
at 500 nm
Amax : <0.02
Safety Information and Hazard Symbols
Safety Statement: 22-24/25
Revision Date :
13-Dec-2013