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71507

Sigma-Aldrich

Sodium phosphate monobasic monohydrate

BioXtra, for molecular biology, ≥99.5% (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.25

grade

for molecular biology

Quality Level

product line

BioXtra

Assay

≥99.5% (T)

form

crystals

impurities

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

pH

4.0-4.5 (25 °C, 1 M in H2O)

solubility

H2O: 1 M, clear, colorless

anion traces

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

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤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
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

1 M in H2O

UV absorption

λ: 260 nm Amax: ≤0.03
λ: 280 nm Amax: ≤0.02

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
71504S9638S3522
Sodium phosphate monobasic monohydrate BioXtra, for molecular biology, ≥99.5% (T)

Sigma-Aldrich

71507

Sodium phosphate monobasic monohydrate

Premium Grade
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 BioReagent, suitable for electrophoresis, 98.0-102.0%

Sigma-Aldrich

S3522

Sodium phosphate monobasic monohydrate

Essential+ Grade
product line

BioXtra

product line

-

product line

-

product line

BioReagent

assay

≥99.5% (T)

assay

≥99.0% (T)

assay

≥98%, 98.0-102.0%

assay

98.0-102.0%

form

crystals

form

crystals

form

crystalline

form

powder

impurities

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

impurities

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

impurities

≤0.01% Insoluble matter

impurities

≤0.01% Insoluble matter

pH

4.0-4.5 (25 °C, 1 M in H2O)

pH

4.1-4.5 (25 °C, 50 mg/mL in H2O)

pH

4.1-4.5 (25 °C, 5% in solution)

pH

4.1-4.5 (25 °C, 5% in solution)

Application

Sodium phosphate monobasic monohydrate has been used as a component of phosphate buffer to maintain the pH for the preparation of collagen gels and matrices.

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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