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Key Documents

1.05099

Supelco

di-Potassium hydrogen phosphate trihydrate

for analysis EMSURE®

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
MDL number:
UNSPSC Code:
12352302
EC Index Number:
231-834-5
NACRES:
NA.21

Quality Level

product line

EMSURE®

Assay

≥99.0% (acidimetric)

form

solid

pH

9.2-9.4 (20 °C, 50 g/L in H2O)

mp

340 °C (anhydrous substance; decomposes)

bulk density

800 kg/m3

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

As: ≤0.00005%
Fe: ≤0.0005%
N: ≤0.001%
Na: ≤0.1%
heavy metals (as Pb): ≤0.001%

storage temp.

15-25°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

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Linkage

Replaces: PX1571; PX1571-1; PX1571-20

Analysis Note

Assay (acidimetric): ≥ 99.0 %
pH-value (5 %; water): 9.1 - 9.3
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.00005 %
Fe (Iron): ≤ 0.0005 %
Na (Sodium): ≤ 0.1 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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