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Supelco

Sodium ammonium hydrogen phosphate tetrahydrate

for analysis EMSURE®

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Synonym(s):
Sodium ammonium hydrogen phosphate tetrahydrate, Ammonium sodium hydrogen phosphate, Microcosmic salt
Empirical Formula (Hill Notation):
H5NNaO4P · 4H2O
CAS Number:
Molecular Weight:
209.07
MDL number:
UNSPSC Code:
12352302
EC Index Number:
235-860-8
NACRES:
NA.21

Quality Level

product line

EMSURE®

Assay

≥99.0% (acidimetric)

form

solid

pH

8.3 (20 °C, 50 g/L in H2O)

mp

79 °C

solubility

167 g/L

density

0.85 g/cm3 at 20 °C

anion traces

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

cation traces

As: ≤0.00005%
Fe: ≤0.0005%
K: ≤0.001%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

InChI

1S/H3N.Na.H3O4P.4H2O/c;;1-5(2,3)4;;;;/h1H3;;(H3,1,2,3,4);4*1H2/q;+1;;;;;/p-1

InChI key

IQTQISLCLWJRPM-UHFFFAOYSA-M

Related Categories

Analysis Note

Assay (acidimetric): ≥ 99.0 %
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
As (Arsenic): ≤ 0.00005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.001 %

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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