Merck
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27635

Sigma-Aldrich

Adipic acid

meets analytical specification of Ph.Eur., BP, E 355, 99.6-101.0% (calc. to the dried substance)

Synonym(s):
Hexanedioic acid
Linear Formula:
HOOC(CH2)4COOH
CAS Number:
Molecular Weight:
146.14
Beilstein:
1209788
EC Number:
MDL number:
eCl@ss:
39021711
PubChem Substance ID:

vapor density

5 (vs air)

vapor pressure

1 mmHg ( 159.5 °C)

assay

99.6-101.0% (calc. to the dried substance)

form

solid

autoignition temp.

788 °F

quality

meets analytical specification of Ph.Eur., BP, E 355

impurities

residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.2% water (Karl Fischer)

ign. residue

≤0.002% (as SO4)

loss

≤0.2% loss on drying, 105 °C

bp

265 °C/100 mmHg (lit.)

mp

151-154 °C (lit.)
151-154 °C

solubility

H2O: slightly soluble
H2O: soluble (Boiling)
acetone: soluble
benzene: insoluble
cyclohexane: slightly soluble
ethanol: freely soluble
methanol: freely soluble
petroleum ether: insoluble

anion traces

chloride (Cl-): ≤50 mg/kg
nitrate (NO3-): ≤30 mg/kg
sulfate (SO42-): ≤500 mg/kg

cation traces

As: ≤3 mg/kg
Fe: ≤5 mg/kg
Hg: ≤1 mg/kg
Pb: ≤10 mg/kg
Pb: ≤5 mg/kg

suitability

passes test for appearance of solution

SMILES string

OC(=O)CCCCC(O)=O

InChI

1S/C6H10O4/c7-5(8)3-1-2-4-6(9)10/h1-4H2,(H,7,8)(H,9,10)

InChI key

WNLRTRBMVRJNCN-UHFFFAOYSA-N

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Application

Adipic acid is an organic acid used for resolving the problem of pH-dependent release of weakly basic drugs.

Biochem/physiol Actions

Presence of adipic acid in the urine of ketotic patients is utilized as a marker for diagnosing the degree of ketosis.

Preparation Note

Adipic acid is freely soluble in ethanol and methanol. It also dissolves in boiling water, and acetone. Additionally, the product is slightly soluble in water and cyclohexane and is practically insoluble in benzene and petroleum ether.

Certificate of Analysis

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Certificate of Origin

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