 |
Sodium Fluoride USP Analytical Reagent Grade Supplier Exporter Manufacturers' Representative |
Email: info@ammol.org |
Call Toll Free +1-855-552-6665 |
Sodium Fluoride
CAS Number: 7681-49-4
Molecular Formula: NaF
Molecular Weight: 41.99
Sodium Fluoride
Sodium Fluoride USP Grade Specifications
NaF -- 41.99 -- CAS 7681-49-4
Sodium Fluoride contains not less than 98.0 percent and not more than 102.0 percent of NaF, calculated on the dried basis.
Identification:
A: Place 1 g in a platinum crucible in a well-ventilated hood, add 15 mL of sulfuric acid, and cover the crucible with a piece of clear, polished glass. Heat the crucible on a steam bath for 1 hour, remove the glass cover, rinse it in water, and wipe dry: the surface of the glass is etched.
B: A solution (1 in 25) responds to the tests for Sodium.
Tests:
Acidity or alkalinity: Dissolve 2.0 g in 40 mL of water in a platinum dish, add 10 mL of a saturated solution of potassium nitrate, cool the solution to 0 , and add 3 drops of phph. If no color appears, a pink color persisting for 15 seconds is produced by not more than 2.0 mL of 0.10 N sodium hydroxide. If the solution is colored pink by the addition of phph, it is rendered colorless by not more than 0.50 mL of 0.10 N sulfuric acid. Save the neutralized solution for the test for Fluosilicate.
Loss on drying: Dry it at 150 for 4 hours: it loses not more than 1.0% of its weight.
Fluosilicate: After the solution from the test for Acidity or alkalinity has been neutralized, heat to boiling, and titrate while hot with 0.10 N sodium hydroxide until a permanent pink color is obtained: not more than 1.5 mL of 0.10 N sodium hydroxide is required.
Chloride: Dissolve 300 mg in 20 mL of water, and add 200 mg of boric acid, 1 mL of nitric acid, and 1 mL of 0.1 N silver nitrate: any turbidity produced is not greater than that of a blank to which has been added 1.0 mL of 0.0010 N hydrochloric acid (0.012%).
Heavy metals: To 1 g, in a platinum dish or crucible, under a hood, add 1 mL of water and 3 mL of sulfuric acid, and heat at as low a temperature as practicable until all of the sulfuric acid has been expelled. Dissolve the residue in 20 mL of water, neutralize the solution to phph with ammonium hydroxide, add 1 mL of glacial acetic acid, dilute with water to 45 mL, filter, and use 30 mL of the filtrate for the test: the limit is 0.003%.
Sodium Fluoride Analytical Reagent Grade Specifications
Molecular Formula: NaF
Formula Weight 41.99
CAS Number 7681-49-4
REQUIREMENTS
Assay: 99% NaF
MAXIMUM ALLOWABLE
Insoluble matter: 0.02%
Loss on drying at 150C: 0.3%
Chloride (Cl): 0.005%
Titrable acid: 0.03 meq/g
Titrable base: 0.01 meq/g
Sodium fluosilicate (Na2SiF6): 0.1%
Sulfate (SO4): 0.03%
Sulfite (SO2): 0.005%
Heavy metals (as Pb): 0.003%
Iron (Fe): 0.003%
Potassium (K): 0.02%.
We also supply Sodium Fluoride of BP Ph Eur Grade.
Please visit SDS Safety Data Sheet of Sodium Fluoride 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:
9910 Bent Oak Dr
Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665
Email: info@ammol.org