Merck
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71504-MM

Sigma-Aldrich

Sodium phosphate monobasic monohydrate

puriss. p.a., ACS reagent, ≥99.0% (T)

Synonym(s):
Sodium dihydrogen phosphate monohydrate, Monosodium phosphate
Linear Formula:
NaH2PO4 · H2O
CAS Number:
Molecular Weight:
137.99
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent
puriss. p.a.

assay

≥99.0% (T)

impurities

≤0.01% insoluble matter
≤10 mg/kg total nitrogen (N)

pH

4.1-4.5 (25 °C, 50 mg/mL in H2O)

anion traces

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤30 mg/kg

cation traces

As: ≤0.00005%
Ca: ≤0.001%
Cd: ≤0.0005%
Co: ≤0.0005%
Cr: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Mg: ≤0.0005%
Mn: ≤0.0005%
Ni: ≤0.0005%
Pb: ≤0.0005%
Zn: ≤0.0005%
heavy metals: ≤10 mg/kg (by ICP-OES)

storage temp.

10-30°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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General description

Sodium phosphate monobasic monohydrate is a sodium salt.

Application

Sodium phosphate monobasic monohydrate may be used in the following studies:
  • As a mobile phase in HPLC studies.
  • For the dissolution of BSA (Bovine serum albumin).
  • Preparation of buffer solutions.

Warning

Toxicity: Standard Handling (A)

Storage Class Code

10-13 - German Storage Class 10 to 13

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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