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1.06346

Supelco

Sodium dihydrogen phosphate monohydrate

for analysis EMSURE® ACS,Reag. Ph Eur

Synonym(s):
Sodium phosphate monobasic monohydrate, Monosodium phosphate, Sodium dihydrogen phosphate monohydrate
Linear Formula:
NaH2PO4 · H2O
CAS Number:
Molecular Weight:
137.99
MDL number:
EC Index Number:
231-449-2

grade

ACS reagent

Quality Level

Agency

reag. Ph. Eur.

product line

EMSURE®

assay

99.0-102.0% (alkalimetric)

form

crystals

potency

>2000 mg/kg LD50, oral (Rat)
>7940 mg/kg LD50, skin (Rabbit)

impurities

≤0.01% Insoluble matter

pH

4.1-4.5 (25 °C, 50 g/L in H2O)

solubility

850 g/L

density

2.04 g/cm3 at 20 °C

bulk density

880 kg/m3

anion traces

chloride (Cl-): ≤0.0005%
sulfate (SO42-): ≤0.003%

cation traces

Ca: ≤0.005%
Fe: ≤0.0005%
K: ≤0.005%
N: ≤0.001%
heavy metals: ≤0.0005%

UV absorption

λ: 280 nm Amax: ≤0.05

storage temp.

2-30°C

SMILES string

[Na+].[H]O[H].OP(O)([O-])=O

InChI

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

InChI key

BBMHARZCALWXSL-UHFFFAOYSA-M

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Related Categories

Linkage

Replaces: SX0709; SX0709-5; SX0710; SX0710-1; SX0710-3; SX0710-5; SX0710-20

Analysis Note

Assay (alkalimetric): 99.0 - 102.0 %
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water, 25 °C): 4.1 - 4.5
UV absorption (280 nm; 1 mol/l; 1 cm; water): ≤ 0.05
Chloride (Cl): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.003 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (ACS): ≤ 0.0005 %
Ca (Calcium): ≤ 0.005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.005 %
Corresponds to ACS,Reag. Ph Eur

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

Certificate of Analysis

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Certificate of Quality

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