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71497

Sigma-Aldrich

Sodium citrate monobasic

BioXtra, anhydrous, ≥99.5% (T)

Synonym(s):
Citric acid monosodium salt, Sodium dihydrogen citrate
Linear Formula:
HOC(COONa)(CH2COOH)2
CAS Number:
Molecular Weight:
214.11
Beilstein:
3920246
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

product line

BioXtra

Assay

≥99.5% (T)

form

crystals

impurities

insoluble matter, passes filter test
≤0.2% water

pH

3.5-4.0 (25 °C, 0.25 M in H2O)

solubility

H2O: 0.25 M at 20 °C, clear, colorless

anion traces

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

0.25 M in H2O

UV absorption

λ: 260 nm Amax: ≤0.20
λ: 280 nm Amax: ≤0.10

SMILES string

[Na+].OC(=O)CC(O)(CC([O-])=O)C(O)=O

InChI

1S/C6H8O7.Na/c7-3(8)1-6(13,5(11)12)2-4(9)10;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);/q;+1/p-1

InChI key

HWPKGOGLCKPRLZ-UHFFFAOYSA-M

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714987140271405
assay

≥99.5% (T)

assay

≥99.0% (T)

assay

-

assay

≥99.0% (NT)

form

crystals

form

crystals

form

crystals

form

powder

impurities

insoluble matter, passes filter test, ≤0.2% water

impurities

-

impurities

DNases, none detected, RNases, none detected, insoluble matter, passes filter test, phosphatases, none detected, proteases, none detected, 11-13% Water (Karl Fischer)

impurities

11-13% water (KFT)

pH

3.5-4.0 (25 °C, 0.25 M in H2O)

pH

3.5-3.8 (25 °C, 50 mg/mL in H2O)

pH

7.5-9.0 (25 °C, 0.1 M in H2O)

pH

7.0-9.0 (25 °C, 50 mg/mL in H2O)

solubility

H2O: 0.25 M at 20 °C, clear, colorless

solubility

water: soluble 50, clear, colorless

solubility

H2O: 0.1 M at 20 °C, clear, colorless

solubility

water: soluble 29.4 g/L at 20 °C

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-): ≤10 mg/kg, sulfate (SO42-): ≤50 mg/kg

anion traces

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

Application

Sodium citrate monobasic has been used-
  • as a component of Beltsville thawing solution (BTS) for semen dilution
  • for the formulation of isonitrogenous diets to study the effects of sodium citrate in red hybrid tilapia
  • for the preparation of SSC (saline sodium citrate) made for post-hybridization wash

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

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