Honey-sweet, slightly animalic with a waxy, floral quality. Phenyl acetic acid smells like old honey stored in a leather pouch — sweet, musky, faintly barnyard.
Honey-sweet, waxy, slightly animalic. Warm and golden at proper dilution. At concentration, a faintly urinous-barnyard edge. The honey quality is naturalistic — less clean than synthetic honey accords, more alive and complex. Moderate tenacity.
CAS 103-82-2. A simple aromatic acid with a characteristic honey-sweet, slightly animalic aroma. Phenyl acetic acid occurs naturally in honey (contributing to its characteristic smell), rose, narcissus, and various other flowers. It is also a byproduct of microbial metabolism.
The scent is distinctly honeyed — sweet, waxy, with a warm, slightly animalic undertone. At higher concentrations, a faintly urinous or barnyard quality appears; at proper dilution, it reads as golden, warm, and naturally sweet. The molecule bridges the gap between sweet-floral and animalic categories.
In perfumery, phenyl acetic acid is used as a honey modifier and as a component of animalic bases. Its honeyed character is more naturalistic than synthetic 'honey' molecules.
Phenyl acetic acid is produced by the bacterial breakdown of phenylalanine — it is one of the molecules responsible for the characteristic smell of aged cheese, fermented foods, and unwashed skin. The same molecule that makes honey smell sweet also contributes to some of humanity's most challenging body odors.
Extraction & Chemistry
Extraction method: Produced synthetically by various routes including carbonylation of benzyl chloride. Found naturally in honey, rose oil, and narcissus. The synthetic route dominates commercially.
Molecular Formula
C8H8O2
CAS Number
103-82-2
Botanical Name
N/A - synthetic molecule
IFRA Status
No known restrictions
Synonyms
Α-TOLUIC ACID · BENZENEACETIC ACID
Physical Properties
Lasting Power
400 hour(s) at 10.00 % in dipropylene glycol
Appearance
white crystalline powder
Boiling Point
265.00 to 266.00 °C. @ 760.00 mm Hg
Flash Point
212.00 °F. TCC ( 100.00 °C. )
Melting Point
76.00 to 78.00 °C. @ 760.00 mm Hg
In Perfumery
Modifier in honey, animalic, and warm-floral compositions. Phenyl acetic acid provides naturalistic honey character with animalic depth. Used at low concentrations (0.1-1%) in honey accords, as a warm modifier in rose compositions (it occurs naturally in rose absolute), and in animalic bases where a honeyed quality is desired.