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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:
16788-57-1
Molecular Weight:
228.22
MDL number:
MFCD00149926
UNSPSC Code:
12161703
EC Index Number:
231-834-5
NACRES:
NA.21

Quality Level

100

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

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

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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