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Topic summary

P-Anisic acid

P-Anisic acid
Names Preferred IUPAC name
4-Methoxybenzoic acid
Other names
Draconic acid
Identifiers
3D model (JSmol)
508910 ChEBI
ChEMBL
ChemSpider
ECHA InfoCard100.002.562EC Number
  • 202-818-5
3499 KEGG
UNII
  • InChI=1S/C8H8O3/c1-11-7-4-2-6(3-5-7)8(9)10/h2-5H,1H3,(H,9,10)
    Key: ZEYHEAKUIGZSGI-UHFFFAOYSA-N
  • O=C(O)C1=CC=C(OC)C=C1
Properties C8H8O3Molar mass152.149 g·mol Density1.385 g/cm Melting point184 °C (363 °F; 457 K) (sublimation) Boiling point275 to 280 °C (527 to 536 °F; 548 to 553 K) 1 part per 2500 Acidity (pKa) 4.47 Structure monoclinic P21/a
a = 16.98 Å, b = 10.95 Å, c = 3.98 Å
α = 90°, β = 98.7°, γ = 90°
4 Hazards GHS labelling: WarningH302, H315, H319, H335P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P330, P332+P313, P337+P313, P362, P403+P233, P405
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

p-Anisic acid, also known as 4-methoxybenzoic acid or draconic acid, is one of the isomers of anisic acid. The term "anisic acid" often refers to this form specifically. It is a white crystalline solid which is insoluble in water, highly soluble in alcohols, and soluble in ether and ethyl acetate.

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