Skip to Content
Merck

Key Documents

View All Documentation

1.19754

di-Potassium hydrogen phosphate trihydrate

buffer substance for chromatography LiChropur™

Synonym(s):

di-Potassium hydrogen phosphate trihydrate, Potassium phosphate dibasic

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Empirical Formula (Hill Notation):
HK2O4P · 3H2O
CAS Number:
16788-57-1
Molecular Weight:
228.22
UNSPSC Code:
12161703
EC Index Number:
231-834-5
NACRES:
NA.21
MDL number:
MFCD00149926
Assay:
≥99.0% (acidimetric)
Grade:
reagent grade
Form:
solid
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

grade

reagent grade

Quality Segment

100

assay

≥99.0% (acidimetric)

form

solid

technique(s)

HPLC: suitable

pH

9.0-9.4((50 g/L in water))

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 9.0 - 9.4 (50 g/L in water)
  • 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

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library