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Disodium Phosphate or Sodium Phosphate Dibasic or Disodium Hydrogen Phosphate Specifications of Commercial Pure & USP NF Analytical Reagent FCC Food Grade Manufacturers & Exporters

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Disodium Phosphate or Sodium Phosphate Dibasic or Disodium Hydrogen Phosphate
CAS Number:
CAS Number 10039-32-4 for Dodecahydrate,
CAS Number 7782-85-6 for Heptahydrate,
CAS Number 10028-24-7 for Dihydrate,
CAS Number 118830-14-1 for Monohydrate,
CAS Number 10140-65-5 for Hydrate,
CAS Number 7558-79-4 for Anhydrous

Dibasic Sodium Phosphate USP NF Grade Specifications:
Na2HPO4-12H2O --- 358.14
Na2HPO4-7H2O --- 268.07
Na2HPO4-2H2O --- 177.99
Na2HPO4-H2O --- 159.94
Na2HPO4 --- 141.96
Phosphoric acid, disodium salt, dodecahydrate;
Disodium hydrogen phosphate, dodecahydrate CAS 10039-32-4
Phosphoric acid, disodium salt, heptahydrate;
Disodium hydrogen phosphate heptahydrate CAS 7782-85-6
Phosphoric acid, disodium salt, dihydrate;
Disodium hydrogen phosphate, dihydrate CAS 10028-24-7
Phosphoric acid, sodium salt, monohydrate;
Disodium hydrogen phosphate, monohydrate CAS [118830-14-1
Phosphoric acid, disodium salt, hydrate;
Disodium hydrogen phosphate hydrate CAS 10140-65-5
Anhydrous CAS 7558-79-4

DEFINITION
Dibasic Sodium Phosphate is dried or contains one, two, seven, or twelve molecules of water of hydration. It contains NLT 98.0% and NMT 100.5% of Na2HPO4 calculated on the dried basis.

IDENTIFICATION
A. Identification Tests-General, Sodium
B. Identification Tests-General, Phosphate.

Insoluble Substances:
Sample solution: Equivalent to 5.0 g of Na2HPO4 in 100 mL of hot water
Analysis: Filter through a tared filtering crucible, wash the insoluble residue with hot water, and dry at 105C for 2 h.
Acceptance criteria: NMT 20 mg (NMT 0.4%)
Chloride and Sulfate, Chloride: To pass the test. --- (NMT 0.06%)
Chloride and Sulfate, Sulfate: To pass the test. --- (NMT 0.2%)
Arsenic: To pass the test. --- NMT 16 ppm
Loss on Drying: Dry a sample at 130C to constant weight.
Acceptance criteria:
Dried: NMT 5.0%
Monohydrate: 10.3% to 12.0%
Dihydrate: 18.5% to21.5%
Heptahydrate: 43.0% to 50.0%
Dodecahydrate: 55.0% to 64.0%

Specifications of Sodium Phosphate Dibasic FCC Food Grade
Disodium Monohydrogen Phosphate; Disodium Phosphate
Na2HPO4 Formula Weight, anhydrous 141.96
Na2HPO4-2H2O Formula Weight, dihydrate 177.99
INS: 339(ii) CAS anhydrous 7558-79-4
CAS dihydrate 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%.


Specifications of Sodium Phosphate Dibasic, Heptahydrate Analytical Reagent
Disodium Hydrogen Phosphate Heptahydrate
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%


Specifications of Sodium Phosphate Dibasic Analytical Reagent
Disodium Hydrogen Phosphate
(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%

SDS MSDS of Disodium Phosphate, Sodium Phosphate Dibasic BP Ph Eur EP JP USP NF IP ACS Analytical Reagent FCC Food grade Manufacturers

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Crystal Clear Products
Plot No-C1-1031-9, GIDC Estate, Panoli, Ankleshwar, Gujarat - 393002. India
Telephone Mobile: 91-7506449333; e-mail: info@crystalclearproducts.org

e-mail: info@crystalclearproducts.org

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