Adipic Acid

Adipic acid or hexanedioic acid is the organic compound with the formula (CH2)4(COOH)2. From an industrial perspective, it is the most important dicarboxylic acid. Adipic acid otherwise rarely occurs in nature, but it is known as manufactured E number food additive E355. Adipic acid has been incorporated into controlled-release formulation matrix tablets to obtain pH-independent release for both weakly basic and weakly acidic drugs. significant amounts of adipic acid are used as a food ingredient as a flavorant and gelling aid.

Specifications of Adipic Acid Commercial Pure:
Appearance: It occurs as a white crystalline powder.
Melting point: Not less than 151.5 C
Moisture: Not more than 0.2%
Ammonia solution color (PT-CO): Not more than 5
Iron (Fe): Not more than 0.4 mg/kg
Nitric acid (HNO3): Not more than 3 mg/kg
Ashes: Not more than 4 mg/kg
Assay: Not less than 99.7%.

Adipic Acid BP Grade
Ph Eur
C6H10O4 --- 146.1 --- CAS 124-04-9
Action and use: Excipient.

DEFINITION
Hexanedioic acid.
Content: 99.0 per cent to 101.0 per cent (dried substance).

CHARACTERS
Appearance: White or almost white, crystalline powder.
Solubility: Sparingly soluble in water, soluble in boiling water, freely soluble in alcohol and in methanol, soluble in acetone.

IDENTIFICATION
A. Melting point (2.2.14): 151C to 154C.
B. Infrared absorption spectrophotometry.

TESTS
Solution S: Dissolve 5.0 g with heating in distilled water and dilute to 50 ml with the same solvent. Allow to cool and to crystallise. Filter through a sintered-glass filter (40). Wash the filter with distilled water. Collect the filtrate and the washings until a volume of 50 ml is obtained.
Appearance of solution: The solution is clear and colourless.
Dissolve 1.0 g in methanol R and dilute to 20 ml with the same solvent.
Related substances: Liquid chromatography To pass the test.
Chlorides: Maximum 200 ppm.
Nitrates: Maximum 30 ppm.
Sulphates: Maximum 500 ppm.
Iron: Maximum 10 ppm.
Heavy metals: Maximum 10 ppm.
Loss on drying: Maximum 0.2 per cent, determined on 1.000 g by drying in an oven at 105C.
Sulphated ash: Maximum 0.1 per cent.

Adipic Acid USP NF Grade
C6H10O4 --- 146.1
Hexanedioic acid.
1,4-Butanedicarboxylic acid CAS 124-04-9

Adipic Acid contains not less than 99.0 percent and not more than 101.0 percent of C6H10O4, calculated on the dried basis.
Packaging and storage: Preserve in a tight container. No storage requirements specified.
Identification: Infrared Absorption 197K .
Melting range: between 151C and 154C.
Loss on drying: Dry it at 105C to constant weight: it loses not more than 0.2% of its weight.
Residue on ignition: not more than 0.1%.
Limit of nitrates: To pass the test
Chloride: A 5-mL portion of the Test solution from the Limit of nitrates test shows no more chloride than a corresponding 0.14-mL portion of 0.020 N hydrochloric acid: the limit is 0.02%.
Sulfate: A 5-mL portion of the Test solution from the Limit of nitrates test shows no more sulfate than a corresponding 0.26-mL portion of 0.020 N sulfuric acid: the limit is 0.05%.
Iron: Use a 10-mL portion of the Test solution from the Limit of nitrates test: the limit is 0.001%.
Heavy metals: 0.001%.

Adipic Acid FCC Food Grade
Hexanedioic Acid; 1,4-Butanedicarboxylic Acid
HOOC(CH2)4COOH
C6H10O4 Formula weight 146.14
INS: 355 CAS 124-04-9

DESCRIPTION
Adipic Acid occurs as white crystals or a crystalline powder. It is not hygroscopic. It is freely soluble in alcohol, soluble in acetone, and slightly soluble in water.
Function: Buffer; neutralizing agent.

REQUIREMENTS
Assay: Not less than 99.6% and not more than 101.0% of C6H10O4, calculated on the anhydrous basis.
Lead: Not more than 2 mg/kg.
Melting Range: Between 151.5° and 154°.
Residue on Ignition: Not more than 0.002%.
Water: Not more than 0.2%.

Certifications :
We manufacture Bulk Drugs / API, Excipients, Pharmaceuticals (IP/BP/USP/NF/Ph. Eur, JP/ CP), Speciality Chemicals(Pure/AR/ACS), Mineral Fortifiers, Food Chemical Codex (FCC) and Flavour chemicals. Our manufacturing facility is cGMP, GLP, ISO 9001, ISO 14001, ISO 22000, ISO/IEC 17025, FSSC 22000, FSSAI, Kosher, HALAL, EXCiPACT, WC, COPP, WHO-GMP and WC certified. We are also REACH registered for export to European countries.