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Disodium Hydrogen Phosphate or Sodium Phosphate Dibasic or Disodium Phosphate Heptahydrate Dihydrate Anhydrous USP NF Analytical Reagent FCC Food Grade Supplier Exporter Manufacturers' Representative |
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Disodium Hydrogen Phosphate or Sodium Phosphate Dibasic or Disodium Phosphate Heptahydrate Dihydrate Anhydrous
CAS Number: 10039-32-4 Dodecahydrate & 7782-85-6 Heptahydrate & 10028-24-7 Dihydrate & 118830-14-1 Monohydrate & 10140-65-5 Hydrate & 7558-79-4 Anhydrous
Molecular Formula: Na2HPO4 Anhydrous
Molecular Weight: 141.96 Anhydrous
Disodium Hydrogen Phosphate or Sodium Phosphate Dibasic or Disodium Phosphate Heptahydrate Dihydrate Anhydrous
Specifications of Dibasic Sodium Phosphate USP NF
Dibasic Sodium Phosphate
Na2HPO4·xH2O (anhydrous) 141.96
Phosphoric acid, disodium salt, dodecahydrate.
Disodium hydrogen phosphate, dodecahydrate 358.14 CAS Number 10039-32-4
Phosphoric acid, disodium salt, heptahydrate.
Disodium hydrogen phosphate heptahydrate 268.07 CAS Number 7782-85-6
Phosphoric acid, disodium salt, dihydrate.
Disodium hydrogen phosphate, dihydrate 177.99 CAS Number 10028-24-7
Phosphoric acid, sodium salt, monohydrate.
Disodium hydrogen phosphate, monohydrate 159.94 CAS Number 118830-14-1
Phosphoric acid, disodium salt, hydrate.
Disodium hydrogen phosphate hydrate CAS Number 10140-65-5
Anhydrous 7558-79-4
Dibasic Sodium Phosphate is dried or contains one, two, seven, or twelve molecules of water of hydration. It contains not less than 98.0 percent and not more than 100.5 percent of Na2HPO4, calculated on the dried basis.
Identification: A solution (the equivalent of 1 part of Na2HPO4 in 30) responds to the tests for Sodium and for Phosphate.
Loss on drying: Dry it at 130 to constant weight: the dried form loses not more than 5.0% of its weight, the monohydrate loses between 10.3% and 12.0% of its weight, the dehydrate loses between 18.5% and 21.5% of its weight, the heptahydrate loses between 43.0% and 50.0% of its weight, and the dodecahydrate loses between 55.0% and 64.0% of its weight.
Insoluble substances: Dissolve the equivalent of 5.0 g of Na2HPO4 in 100 mL of hot water, filter through a tarred filtering crucible, 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 (0.4%).
Chloride: A portion equivalent to 0.5 g of Na2HPO4 shows no more chloride than corresponds to 0.42 mL of 0.020 N hydrochloric acid (0.06%).
Sulfate: A portion equivalent to 0.1 g of Na2HPO4 shows no more sulfate than corresponds to 0.2 mL of 0.020 N sulfuric acid (0.2%).
Arsenic: the limit is 16 ppm.
Heavy metals: the limit is 0.002%.
Sodium Phosphate Dibasic FCC Food Grade Specifications
Disodium Monohydrogen Phosphate; Disodium Phosphate
Na2HPO4 Formula weight, anhydrous 141.96
Na2HPO4·2H2O Formula weight, dihydrate 177.99
INS: 339(ii) CAS: anhydrous CAS Number 7558-79-4
CAS: dihydrate CAS Number 10028-24-7
DESCRIPTION
Sodium Phosphate, Dibasic, occurs as a white, crystalline powder or as granules. It may be anhydrous or contain two molecules of water of hydration. The anhydrous form is hygroscopic. Both forms are freely soluble in water and insoluble in alcohol.
Function: Emulsifier; texturizer; buffer; nutrient.
REQUIREMENTS
Identification: A 1:20 aqueous solution gives positive tests for Phosphate and for Sodium.
Assay: Not less than 98.0% of Na2HPO4 after drying.
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 Drying Anhydrous: Not more than 5.0%; Dihydrate: Between 18.0% and 22.0%.
Sodium Phosphate Dibasic, Heptahydrate ACS Analytical Reagent
Disodium Hydrogen Phosphate Heptahydrate ACS Specifications
Na2HPO4-7H2O
Formula Weight 268.07
CAS Number 7782-85-6
REQUIREMENTS
Assay: 98.0-102.0% Na2HPO4-7H2O
pH of a 5% solution: 8.7-9.3 at 25C
MAXIMUM ALLOWABLE
Insoluble matter: 0.005%
Chloride (Cl): 0.001%
Nitrogen compounds (as N): 0.001%
Sulfate (SO4): 0.005%
Heavy metals (as Pb): 0.001%
Iron (Fe): 0.001%
Sodium Phosphate Dibasic ACS Analytical Reagent Specifications
Disodium Hydrogen Phosphate ACS
(suitable for buffer solutions)
Na2HPO4
Formula Weight 141.96
CAS Number 7558-79-4
REQUIREMENTS
Assay: 99.0% Na2HPO4 min
pH of a 5% solution: 8.7-9.3 at 25C
MAXIMUM ALLOWABLE
Insoluble matter: 0.01%
Loss on drying at 105C: 0.2%
Chloride (Cl): 0.002%
Nitrogen compounds (as N): 0.002%
Sulfate (SO4): 0.005%
Heavy metals (as Pb): 0.001%
Iron (Fe): 0.002%
Please visit SDS Safety Data Sheet of Sodium Phosphate Dibasic or Disodium Phosphate Heptahydrate Dihydrate Anhydrous Suppliers.
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