Merck
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S0751

Sigma-Aldrich

Sodium phosphate monobasic

ReagentPlus®, ≥99.0%

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:

Quality Level

product line

ReagentPlus®

Assay

≥99.0%

form

powder or crystals

technique(s)

DNA extraction: suitable
electrophoresis: suitable
immunocytochemistry: suitable

pH

4.0-4.5 (25 °C, 50 g/L in water)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

solubility

water: 100 mg/mL, clear, colorless

application(s)

detection

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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S2554RDD007S3139
product line

ReagentPlus®

product line

-

product line

Redi-Dri

product line

BioReagent

assay

≥99.0%

assay

98.0-103.0% (T)

assay

≥99.0%

assay

≥98%

form

powder or crystals

form

powder

form

powder

form

solid

technique(s)

DNA extraction: suitable, electrophoresis: suitable, immunocytochemistry: suitable

technique(s)

-

technique(s)

-

technique(s)

-

pH

4.0-4.5 (25 °C, 50 g/L in water)

pH

4.1-4.5

pH

4.0-4.5 (25 °C, 50 g/L in water)

pH

4.0-4.5 (25 °C, 50 g/L in water)

solubility

water: 100 mg/mL, clear, colorless

solubility

-

solubility

-

solubility

H2O: complete 100 mg/mL, clear, colorless

General description

Sodium phosphate monobasic acts as an acidulant in laxatives and effervescent powders. It is used in beverages, cheese and soft drink formulations.

Application

Sodium phosphate monobasic has been used:
  • as a reagent for virus transfection and fiber implantation in mouse
  • in phosphate buffer for immunocytochemistry and to detect individual catalase activity by PAGE (polyacrylamide gel electrophoresis)
  • as a buffer for cycling assay
  • in automated DNA extraction method
  • as a chemical in artificial cerebro-spinal fluid (aCSF) solution for the preparation of brainstem-spinal cord from rats

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

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

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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