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71496

Sigma-Aldrich

Sodium phosphate monobasic

purum p.a., anhydrous, ≥99.0% (T)

Synonym(s):
Monosodium dihydrogen orthophosphate, Monosodium phosphate, Sodium dihydrogen phosphate
Linear Formula:
NaH2PO4
CAS Number:
Molecular Weight:
119.98
EC Number:
MDL number:
eCl@ss:
38070208
PubChem Substance ID:
NACRES:
NA.25

grade

anhydrous
purum p.a.

Quality Level

assay

≥99.0% (T)

form

crystals

pH

4.0-4.5 (25 °C, 50 mg/mL in H2O)

solubility

water: 0.5 g/10 mL, clear, colorless

anion traces

chloride (Cl-): ≤100 mg/kg
sulfate (SO42-): ≤500 mg/kg

cation traces

Ca: ≤200 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
K: ≤300 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

application(s)

sample preparation

SMILES string

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

InChI

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

InChI key

AJPJDKMHJJGVTQ-UHFFFAOYSA-M

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General description

Sodium phosphate monobasic is an effective oral osmotic laxative at minimal concentration.[49] It is used for colonic cleansing before endoscopic examination of colon.[50]

Application

Sodium phosphate monobasic has been used:
  • as an inorganic phosphate source in cell culture media.
[51]
  • in preparation of phosphate buffered saline.
  • [52]
  • in preparation of phosphate buffer in glucose assay.
  • [53]

    Storage Class Code

    13 - Non Combustible Solids

    WGK

    WGK 1

    Flash Point(F)

    Not applicable

    Flash Point(C)

    Not applicable

    Personal Protective Equipment

    dust mask type N95 (US), Eyeshields, Gloves

    Certificate of Analysis

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    Certificate of Origin

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