D & L Aspartic Acid Commercial Pure & BP Ph Eur USP FCC Food Grade Manufacturers & Exporters
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D L Aspartic Acid CAS Number 56-84-8 for L-isomer and 1783-96-6 for D-isomer
Specifications of Aspartic acid USP Grade Specifications:
C4H7NO4 --- 133.10
l-Aspartic acid --- CAS 56-84-8.
DEFINITION
Aspartic Acid contains NLT 98.5% and NMT 101.5% of aspartic acid& (C4H7NO4), calculated on the dried basis.
IDENTIFICATION
A. Infrared Absorption
Residue on Ignition: NMT 0.1%
Chloride and Sulfate, Chloride:
Sample solution: Dissolve 0.7 g of Aspartic Acid in 10 mL of diluted nitric acid, and dilute with water to 15 mL.
Acceptance criteria: The Sample solution shows no more chloride than corresponds to 0.20 mL of 0.020 N hydrochloric acid (NMT 0.02%).
Chloride and Sulfate, Sulfate:
Sample solution: Dissolve 0.8 g of Aspartic Acid in 4 mL of hydrochloric acid, and dilute with water to 15 mL.
Acceptance criteria: The Sample solution shows no more sulfate than corresponds to 0.25 mL of 0.020 N sulfuric acid (NMT 0.03%).
Iron: NMT 10 ppm
Related Compounds: To pass the chromatography test.
Optical Rotation, Specific Rotation:
Sample solution: 80 mg/mL in 6 N hydrochloric acid
Acceptance criteria: +24.0° to +26.0°, at 20c
Loss on Drying:
Analysis: Dry at 105C for 3 h.
Acceptance criteria: NMT 0.5%
Specifications of Aspartic Acid BP Ph Eur Grade:
C4H7NO4 --- 133.1 --- CAS 56-84-8
Action and use: Amino acid.
DEFINITION
Aspartic acid contains not less than 98.5 per cent and not more than the equivalent of 101.5 per cent of (2S)-2-aminobutanedioic acid, calculated with reference to the dried substance.
CHARACTERS
A white or almost white, crystalline powder or colourless crystals, slightly soluble in water, practically insoluble in alcohol. It dissolves in dilute mineral acids and in dilute solutions of alkali hydroxides.
IDENTIFICATION
First identification: A, C
Second identification: A, B, D
A. Specific optical rotation.
B. A suspension of 1 g in 10 mL of water is strongly acid.
C. Examine by infrared absorption spectrophotometry.
D. Examine the chromatograms obtained in the test for ninhydrin-positive substances. The principal spot in the chromatogram obtained with test solution (b) is similar in position, colour and size to the principal spot in the chromatogram obtained with reference solution (a).
TESTS
Appearance of solution: Dissolve 0.5 g in 1 M hydrochloric acid and dilute to 10 mL with the same acid. The solution is clear and not more intensely coloured than reference solution.
Specific optical rotation: Dissolve 2.000 g in hydrochloric acid and dilute to 25.0 mL with the same acid. The specific optical rotation is + 24.0 to + 26.0, calculated with reference to the dried substance.
Ninhydrin-positive substances: To pass the chromatography test.
Ammonium: 50 mg complies with limit test B (200 ppm).
Iron: In a separating funnel, dissolve 1.0 g in 10 mL of dilute hydrochloric acid. Shake with 3 quantities, each of 10 mL of methyl isobutyl ketone, shaking for 3 min each time. To the combined organic layers add 10 mL of water and shake for 3 min. The aqueous layer complies with the limit test for iron (10 ppm).
Loss on drying: Not more than 0.5 per cent, determined on 1.000 g by drying in an oven at 105C.
Sulfated ash: Not more than 0.1 per cent, determined on 1.0 g.
Specifications of L-Aspartic Acid FCC Food Grade:
L-Aminosuccinic Acid
C4H7NO4 Formula weight 133.10
CAS 56-84-8
DESCRIPTION
L-Aspartic Acid occurs as white crystals or as a crystalline powder. It is slightly soluble in water, but insoluble in alcohol and in ether. It melts at about 270C.
Function: Nutrient.
REQUIREMENTS
Identification: The infrared absorption spectrum.
Assay: Not less than 98.5% and not more than 101.5% of C4H7NO4, calculated on the dried basis.
Lead: Not more than 5 mg/kg.
Loss on Drying: Not more than 0.25%.
Optical (Specific) Rotation [alpha]D20C: Between +24.5° and +26.0°, calculated on the dried basis.
Residue on Ignition: Not more than 0.1%.
Specifications of DL-Aspartic Acid FCC Food Grade:
DL-Aminosuccinic Acid
C4H7NO4 Formula weight 133.10
CAS: 617-45-8
DESCRIPTION
DL-Aspartic Acid occurs as colorless or white crystals. It is slightly soluble in water, but insoluble in alcohol and in ether. It is optically inactive and melts with decomposition at about 280C.
Function: Nutrient.
REQUIREMENTS
Identification: The infrared absorption spectrum.
Assay: Not less than 98.5% and not more than 101.5% of C4H7NO4, calculated on the dried basis.
Lead: Not more than 5 mg/kg.
Loss on Drying: Not more than 0.3%.
Residue on Ignition: Not more than 0.1%. SDS MSDS of D L Aspartic Acid BP Ph Eur EP JP USP NF IP ACS Analytical Reagent FCC Food grade Manufacturers |
