1.19754
di-Potassium hydrogen phosphate trihydrate
buffer substance for chromatography LiChropur™
Synonym(s):
di-Potassium hydrogen phosphate trihydrate, Potassium phosphate dibasic
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About This Item
Empirical Formula (Hill Notation):
HK2O4P · 3H2O
CAS Number:
Molecular Weight:
228.22
UNSPSC Code:
12161703
EC Index Number:
231-834-5
NACRES:
NA.21
MDL number:
Assay:
≥99.0% (acidimetric)
Grade:
reagent grade
Form:
solid
grade
reagent grade
Quality Level
assay
≥99.0% (acidimetric)
form
solid
technique(s)
HPLC: suitable
pH
9.2-9.4 (20 °C, 50 g/L in H2O)
mp
340 °C (anhydrous substance; decomposes)
bulk density
800 kg/m3
storage temp.
2-30°C
SMILES string
[K+].[K+].[P](=O)([O-])([O-])O.O.O.O
InChI
1S/2K.H3O4P.3H2O/c;;1-5(2,3)4;;;/h;;(H3,1,2,3,4);3*1H2/q2*+1;;;;/p-2
InChI key
XQGPKZUNMMFTAL-UHFFFAOYSA-L
Analysis Note
Assay (acidimetric): ≥ 99.0 %
pH-value (5 %; water): 9.2 - 9.4
Self-absorption (254 nm; 0.2 mol/l; 1 cm; water): ≤ 0.01
Self-absorption (220 nm; 0.2 mol/l; 1 cm; water): ≤ 0.03
Self-absorption (215 nm; 0.2 mol/l; 1 cm; water): ≤ 0.11
pH-value (5 %; water): 9.2 - 9.4
Self-absorption (254 nm; 0.2 mol/l; 1 cm; water): ≤ 0.01
Self-absorption (220 nm; 0.2 mol/l; 1 cm; water): ≤ 0.03
Self-absorption (215 nm; 0.2 mol/l; 1 cm; water): ≤ 0.11
Legal Information
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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