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Sodium Phosphate Tribasic or Trisodium Phosphate Dodecahydrate Monohydrate Anhydrous USP NF Analytical Reagent FCC Food Grade Supplier Exporter Manufacturers' Representative |
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Sodium Phosphate Tribasic or Trisodium Phosphate Dodecahydrate Monohydrate Anhydrous
CAS Number: 7601-54-9 Anhydrous & 10101-89-0 Dodecahydrate
Molecular Formula: Na3PO4 Anhydrous
Molecular Weight: 163.94 Anhydrous
Sodium Phosphate Tribasic or Trisodium Phosphate Dodecahydrate Monohydrate Anhydrous
Specifications of Tribasic Sodium Phosphate USP NF
Tribasic Sodium Phosphate
Na3PO4 (anhydrous) 163.94
Phosphoric acid, trisodium salt, dodecahydrate.
Trisodium phosphate, dodecahydrate 380.13 CAS Number 10101-89-0
Trisodium phosphate, monohydrate 181.96
Anhydrous CAS Number 7601-54-9
Tribasic Sodium Phosphate is anhydrous or contains one to twelve molecules of water of hydration. Na3PO4 (anhydrous) and Na3PO4·H2O (monohydrate) contain not less than 97.0 percent of Na3PO4, calculated on the ignited basis; Na3PO4-12H2O (dodecahydrate) contains not less than 92.0 percent of Na3PO4, calculated on the ignited basis.
Identification: A solution (1 in 20) meets the requirements of the tests for Sodium and for Phosphate.
Loss on ignition: Dry a portion at 100 for 5 hours. Ignite about 2 g, accurately weighed, of the dried sample at about 800 for 30 minutes: calculated on the dried basis, the anhydrous form loses not more than 2.0% of its weight, the monohydrate loses between 8.0% and 11.0% of its weight, and the dodecahydrate loses between 45.0% and 57.0% of its weight.
Insoluble substances: Dissolve a portion equivalent to 10.0 g of anhydrous tribasic sodium phosphate in 100 mL of hot water, and filter through a tarred filtering crucible. [NOTE—Do not use glass.] Wash the insoluble residue with hot water, and dry at 105 for 2 hours: the weight of the residue so obtained does not exceed 20 mg (0.2%).
Arsenic:3 µg per g.
Heavy metals:0.001%.
Sodium Phosphate Tribasic FCC Food Grade Specifications
Trisodium Phosphate
Na3PO4 Formula Weight, anhydrous 163.94
Na3PO4·12H2O Formula Weight, dodecahydrate 380.12
INS: 339(iii) CAS: anhydrous CAS Number 7601-54-9
CAS: dodecahydrate CAS Number 10101-89-0
DESCRIPTION
Sodium Phosphate, Tribasic, occurs as white crystals or granules or as a crystalline material. It may be anhydrous or contain 1 to 12 molecules of water of hydration. The formula for a crystalline material is approximately 4(Na3PO4·12H2O)- NaOH. It is freely soluble in water, but is insoluble in alcohol. The pH of a 1:100 aqueous solution is between 11.5 and 12.5.
Function: Antimicrobial; buffer; emulsifier; nutrient.
REQUIREMENTS
Identification: A 1:20 aqueous solution gives positive tests for Sodium and for Phosphate.
Assay: Anhydrous and Monohydrate: Not less than 97.0% of Na3PO4, calculated on the ignited basis; Dodecahydrate: Not less than 90.0% of Na3PO4, calculated on the ignited basis.
Arsenic: Not more than 3 mg/kg.
Fluoride: Not more than 0.005%.
Insoluble Substances: Not more than 0.2%.
Lead: Not more than 4 mg/kg.
Loss on Ignition Anhydrous: Not more than 2.0%; Monohydrate: Between 8.0% and 11.0%; Dodecahydrate: Between 45.0% and 57.0%.
Specifications of Sodium Phosphate Tribasic Dodecahydrate ACS Analytical Reagent
Na3PO4-12H2O
Formula Weight 380.12
CAS Number 10101-89-0
NOTE. This salt, when stored under ordinary conditions, may lose some water of crystallization. Any loss in water will result in an assay of more than 100% Na3PO4-12H2O but does not affect the determination of the relative amount of free alkali present.
REQUIREMENTS
Assay: 98.0-102.0% Na3PO4-12H2O
MAXIMUM ALLOWABLE
Excess alkali (as NaOH): 2.5%
Insoluble matter: 0.01%
Chloride (Cl): 0.001%
Nitrogen compounds (as N): 0.001%
Sulfate (SO4): 0.01%
Heavy metals (as Pb): 0.001%
Iron (Fe): 0.001%
Please visit SDS Safety Data Sheet of Sodium Phosphate Tribasic or Trisodium Phosphate Dodecahydrate Monohydrate Anhydrous Suppliers.
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