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71504

Sigma-Aldrich

Sodium phosphate monobasic monohydrate

puriss. p.a., ACS reagent, ≥99.0% (T)

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Synonym(s):
Monosodium phosphate, Sodium dihydrogen phosphate monohydrate
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)

form

crystals

impurities

≤0.001% total nitrogen (N)
≤0.01% insoluble matter

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: ≤0.5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg
heavy metals: ≤0.001% (by ICP-OES)

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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This Item
715071.063491.06346
Sodium phosphate monobasic monohydrate puriss. p.a., ACS reagent, ≥99.0% (T)

Sigma-Aldrich

71504

Sodium phosphate monobasic monohydrate

Essential Grade
Sodium phosphate monobasic monohydrate BioXtra, for molecular biology, ≥99.5% (T)

Sigma-Aldrich

71507

Sodium phosphate monobasic monohydrate

Premium Grade
assay

≥99.0% (T)

assay

≥99.5% (T)

assay

-

assay

99.0-102.0% (alkalimetric)

form

crystals

form

crystals

form

solid

form

crystals

impurities

≤0.001% total nitrogen (N), ≤0.01% insoluble matter

impurities

DNases, none detected, RNases, none detected, insoluble matter, passes filter test, phosphatases, none detected, proteases, none detected, ≤0.001% total nitrogen (N)

impurities

-

impurities

≤0.01% Insoluble matter

pH

4.1-4.5 (25 °C, 50 mg/mL in H2O)

pH

4.0-4.5 (25 °C, 1 M in H2O)

pH

4.1-4.5 (25 °C, 50 g/L in H2O)

pH

4.1-4.5 (25 °C, 50 g/L in H2O)

anion traces

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

anion traces

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

anion traces

-

anion traces

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

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.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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