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Fluorescein Sodium or Acid Yellow 73
CAS Number: 518-47-8
Molecular Formula: C20H10Na2O5
Molecular Weight: 376.27
Fluorescein Sodium or Acid Yellow 73
General Properties and Specifications of Fluorescein Sodium or Acid Yellow 73:
Appearance: Orange-red powder. Hygroscopic.
Odor: Odorless
Assay: >98%
Relative Density: about 1.6
Melting Point: >300C literature.
Boiling Point: 663C literature.
Flash Point: 217C literature.
Solubility: Soluble in water.
Storage: Room temperature. Preferably refrigerate.
Fluorescein Sodium USP Grade Specifications:
C20H10Na2O5 --- 376.27
Benzoic acid, 2-(6-hydroxy-3-oxo-3H -xanthene-9-yl), sodium salt (1:2);
Fluorescein disodium salt CAS 518-47-8
UNII: 93X55PE38X
UNII: TPY09G7XIR
DEFINITION
Fluorescein Sodium contains NLT 90.0% and NMT 102.0% of fluorescein sodium (C20H10Na2O5), calculated on the anhydrous basis.
IDENTIFICATION
A. A solution is strongly fluorescent, even in extreme dilution. The fluorescence disappears when the solution is made acid and reappears when the solution is again made alkaline.
B. Identification Tests—General, Sodium: The residue remaining after incineration meets the requirements.
C. The retention time of the major peak of the Sample solution corresponds to that of the Standard solution, as obtained in the Assay.
Zinc:
Sample solution: 10 mg/mL of Fluorescein Sodium in a saturated solution of sodium chloride.
Analysis: To 10 mL of Sample solution add 2 mL of 3 N hydrochloric acid. Shake well, filter, and add 1 mL of potassium ferrocyanide to the filtrate.
Acceptance criteria: No turbidity is produced.
Acriflavine:
Sample solution: 2 mg/mL of Fluorescein Sodium in water. Swirl the mixture, and filter.
Analysis: To the Sample solution add a few drops of 100-mg/mL sodium salicylate solution.
Acceptance criteria: No precipitate is formed.
Organic Impurities: To pass the test by chromatography.
Water Determination: NMT 17.0%
Packaging and Storage: Preserve in tight containers.
Fluorescein Sodium is also available as per BP Ph Eur monograoh.
Please visit SDS Safety Data Sheet of Fluorescein Sodium or Acid Yellow 73 Suppliers.
American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.
Suppliers and Manufacturers' Representative:
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Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665
Email: info@ammol.org