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Calcium Lactobionate

Muby Chemicals established in the year 1976, is pioneer in Manufacturing Chemicals for Oil and Gas Exploration, Hydraulic Fracturing (Fracking) and coiled tube Chemicals.Our advanced chemistry leading to an innovative and high-performance product range is coupled with effective on and off site management services.

We are manufacturer of Specialty chemicals, Pharmaceutical Excipients, Fragrance & Flavorchemicals in India, which are of IP, BP, USP, Ph. Eur., FCC or Food Grade, ACS, AR or Analytical Reagent Grade, LR or Laboratory Reagent Grade, Pure and Technical Grades of various chemicals.

Description

Calcium lactobionate is a food additive used as a stabilizer.

Calcium Lactobionate USP Grade
C24H42CaO24.2H2O — 790.68
D-Gluconic acid, 4-O- -D-galactopyranosyl-, calcium salt (2:1), dihydrate.
Lactobionic acid, calcium salt (2:1), dihydrate.
Calcium lactobionate (1:2), dihydrate [110638-68-1].
Calcium Lactobionate contains not less than 96.0 percent and not more than 102.0 percent of C24H42CaO24.2H2O.
Packaging and storage— Preserve in well-closed containers.

Identification
A: A solution (1 in 50) responds to the tests for Calcium.
B: Infrared Absorption 197K.
C: Dissolve a quantity of it in water to obtain a test solution containing 10 mg per mL. Similarly prepare a Standard solution of USP Calcium Lactobionate RS in water containing 10 mg per mL. Apply separately 5 :L of the test solution and 5 :L of the Standard solution to a suitable thin-layer chromatographic plate coated with a 0.25-mm layer of chromatographic silica gel. Dry the plate in a current of cool air. Place the plate in a suitable chromatographic chamber lined with filter paper and previously equilibrated with a solvent system consisting of a mixture of alcohol, water, ethyl acetate, and ammonium hydroxide (50:30:10:10). Develop the chromatogram until the solvent front has moved about three-fourths of the length of the plate. Remove the plate from the chamber, and dry at 100 for 20 minutes. Allow to cool, and spray with a spray reagent prepared as follows. Dissolve 2.5 g of ammonium molybdate in about 50 mL of 2 N sulfuric acid in a 100-mL volumetric flask, add 1.0 g of ceric sulfate, swirl to dissolve, dilute with 2 N sulfuric acid to volume, and mix. Heat the plate at 110 for about 10 minutes: the principal spot obtained from the test solution corresponds in color, size, and RF value to that obtained from the Standard solution.

Specific rotation: between +22.0 and +26.5 .
pH: between 5.4 and 7.4, in a solution (1 in 20).
Halides: A 1.2-g portion tested as directed under Chloride shows no more turbidity than corresponds to 0.7 mL of 0.020 N hydrochloric acid (0.04%).
Sulfate: A 2.0-g portion dissolved in boiling water shows no more sulfate than corresponds to 1 mL of 0.020 N sulfuric acid (0.05%).
Heavy metals: Mix 1 g with 4 mL of 1.2 N hydrochloric acid, add water to make 25 mL, warm gently until dissolved, and cool to room temperature: the limit is 0.002%.
Reducing substances: Transfer 1.0 g to a 250-mL conical flask, dissolve in 20 mL of water, and add 25 mL of alkaline cupric citrate. Cover the flask, boil gently for 5 minutes, accurately timed, and cool rapidly to room temperature. Add 25 mL of 0.6 N acetic acid, 10.0 mL of 0.1 N iodine VS, and 10 mL of 3 N hydrochloric acid, and titrate with 0.1 N sodium thiosulfate VS, adding 3 mL of starch as the endpoint is approached. Perform a blank determination, omitting the specimen, and note the difference in volumes required. Each mL of the difference in volume of 0.1 N sodium thiosulfate consumed is equivalent to 2.7 mg of reducing substances (as dextrose): the limit is 1.0%.

Assay
Dissolve about 0.8 g of Calcium Lactobionate, accurately weighed, in a mixture of water and 3 N hydrochloric acid (150:2). While stirring with a magnetic stirrer, add about 15 mL of 0.05 M edetate disodium VS from a 50-mL buret. Add 15 mL of 1 N sodium hydroxide and 300 mg of hydroxy naphthol blue, and continue the titration to a blue endpoint. Each mL of 0.05 M edetate disodium is equivalent to 39.53 mg of C24H42CaO24.2H2O.

Calcium Lactobionate FCC Food Grade
Calcium 4-(_,D-Galactosido)-D-gluconate
C24H42CaO24 Formula wt, anhydrous 754.66
CAS: [5001-51-4]

DESCRIPTION
Calcium Lactobionate occurs as a white to cream-colored, free-flowing powder. It readily forms double salts, such as the chloride, bromide, and gluconate. It is anhydrous when obtained by spray-drying, or the dihydrate when obtained by crystallization. It is freely soluble in water, but insoluble in alcohol and in ether. It decomposes at about 120°. The pH of a 1:10 aqueous solution is between 6.5 and 7.5.
Function: Firming agent in dry pudding mixes; nutrient.

REQUIREMENTS
Labeling: Indicate whether the product has been obtained through spray-drying or from crystallization.
Identification
A. The infrared absorption spectrum of a potassium bromide dispersion of the sample, previously dried at 105C for 8 h, exhibits relative maxima at the same wavelengths as those of a similar preparation of USP Calcium Lactobionate Reference Standard.
B. A sample gives positive tests for Calcium.
Calcium Content: Not less than 5.05% and not more than 5.55% of calcium (Ca), calculated on the dried basis.
Halides: Not more than 0.04%.
Lead: Not more than 2 mg/kg.
Loss on Drying: Not more than 8.0%.
Optical (Specific) Rotation [α]D20C: Between +23° and +25°.
Reducing Substances: Not more than 1.0%.
Sulfate: Not more than 0.7%.

For Original Monographs of IP Indian Pharmacopoeia BP British Pharmacopoeia USP US Pharmacopoeia FCC Food Grade product, please check with the respective web-pages or books.