Dextrose USP NF
C6H12O6.H2O 198.17
D-Glucose, monohydrate.
D-Glucose monohydrate [5996-10-1].
Anhydrous 180.16 [50-99-7].
Dextrose is a sugar usually obtained by the hydrolysis of starch. It contains one molecule of water of hydration or is anhydrous.
Identification: Add a few drops of a solution (1 in 20) to 5 mL of hot alkaline cupric
tartrate: a copious red precipitate of cuprous oxide is formed.
Color of solution: Dissolve 25 g in water to make 50.0 mL of solution: the solution has no
more color than a solution prepared by mixing 1.0 mL of cobaltous chloride, 3.0 mL of ferric
chloride, and 2.0 mL of cupric sulfate with water to make 10 mL, and diluting 3 mL of this solution
with water to 50 mL. Make the comparison by viewing the solutions downward in matched
color-comparison tubes against a white surface.
Specific rotation: between +52.6degrees and +53.2degrees.
Acidity: Dissolve 5.0 g in 50 mL of carbon dioxide-free water. Add phenolphthalein and
titrate with 0.020 N sodium hydroxide to the production of a distinct pink color: not more than 0.30
mL is required for neutralization.
Water: Dry it at 105C for 16 hours: the hydrous form loses between 7.5% and 9.5% of its
weight, and the anhydrous form loses not more than 0.5% of its weight.
Residue on ignition: not more than 0.1%.
Chloride: A 2.0-g portion shows no more chloride than corresponds to 0.50 mL of 0.020 N
hydrochloric acid (0.018%).
Sulfate: A 2.0-g portion shows no more sulfate than corresponds to 0.50 mL of 0.020 N
sulfuric acid (0.025%).
Arsenic: 1 ppm.
Heavy metals: Dissolve 4.0 g in water to make 25 mL of solution: the limit is 5 ppm.
Dextrin: Reflux 1 g of finely powdered Dextrose with 20 mL of alcohol: it dissolves
completely.
Soluble starch, sulfites: To a solution of 1 g in 10 mL of water add 1 drop of iodine: the
liquid is colored yellow.
Dextrose FCC Food Grade
D-Glucose; Glucose; Corn Sugar
C6H12O6 --- Formula wt 180.16 --- CAS: [50-99-7]
DESCRIPTION
Dextrose occurs as white, crystalline granules or as a granular powder. It is purified and
crystallized D-glucose. It is anhydrous or contains one molecule of water of crystallization. It is
freely soluble in water, very soluble in boiling water, and slightly soluble in alcohol.
Function: Nutritive sweetener; humectant; texturizing agent.
REQUIREMENTS
Identification: Add a few drops of a 1:20 aqueous solution to 5 mL of hot alkaline cupric
tartrate. A copious red precipitate of cuprous oxide forms.
Assay: Not less than 99.5% and not more than 100.5% of reducing sugar content (dextrose
equivalent), expressed as Dglucose, calculated on the dried basis.
Arsenic: Not more than 1 mg/kg.
Chloride: Not more than 0.018%.
Lead: Not more than 0.1 mg/kg.
Loss on Drying: Anhydrous: Not more than 2.0%; Monohydrate: Not more than
10.0%.
Optical (Specific) Rotation: Between +52.6°degreeand +53.2degree after drying.
Residue on Ignition: Not more than 0.1%.
Starch: Passes test.
Sulfur Dioxide: Not more than 0.002%.
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