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71500

Sigma-Aldrich

Sodium phosphate monobasic dihydrate

purum p.a., crystallized, ≥99.0% (T)

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Synonym(s):
Sodium dihydrogen phosphate dihydrate
Linear Formula:
NaH2PO4 · 2H2O
CAS Number:
Molecular Weight:
156.01
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

grade

purum p.a.

Assay

≥99.0% (T)

form

crystals

quality

crystallized

pH

4.0-4.5 (25 °C, 50 mg/mL in H2O)

solubility

H2O: 50 mg/mL, clear, colorless

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
K: ≤100 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

SMILES string

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

InChI

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

InChI key

VBJGJHBYWREJQD-UHFFFAOYSA-M

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This Item
71505042691.93624
Sodium phosphate monobasic dihydrate BioUltra, for molecular biology, ≥99.0% (T)

Sigma-Aldrich

71505

Sodium phosphate monobasic dihydrate

Premium Grade
Sodium phosphate monobasic dihydrate meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, 98-100.5% (calc. to the dried substance)

Sigma-Aldrich

04269

Sodium phosphate monobasic dihydrate

Essential Grade
assay

≥99.0% (T)

assay

≥99.0% (T)

assay

98-100.5% (calc. to the dried substance)

assay

-

form

crystals

form

powder or crystals

form

powder or crystals

form

-

pH

4.0-4.5 (25 °C, 50 mg/mL in H2O)

pH

4.0-4.5 (25 °C, 1 M in H2O)

pH

4.1-5.0 (20 °C, 1%), 4.2-4.5 (20 °C, 5%)

pH

-

solubility

H2O: 50 mg/mL, clear, colorless

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

-

solubility

-

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg

anion traces

chloride (Cl-): ≤50 mg/kg, fluoride (F-): ≤10 mg/kg, sulfate (SO42-): ≤200 mg/kg

anion traces

-

General description

Sodium dihydrogen phosphate is an inorganic compound, which is soluble in water. Sodium dihydrogen phosphate dihydrate is used as a reagent in the development of silicate-based grouts.

Application

Sodium phosphate monobasic dihydrate has been used:
  • to perform perfusion for fixed brain tissue to the validate magnetic resonance (MR) signal changes and analyze neuropathological changes in the brain
  • as a component of basal salt solution to prepare biofilm minimal media (BMM) for culturing Pseudomonas aeruginosa strain PAO1
  • to prepare sodium phosphate monobasic (NaH2PO4) stock solutions to make running buffer for capillary electrophoresis

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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