Сіно
The smell of summer dying slowly in a barn. Sun-dried grass releasing coumarin — powdery, almond-sweet, faintly tobacco-stained. Not green: hay is what happens after the green is gone.
- Type
- Складник
- Olfactive family
- Ароматичні
- Source
- leaves and flowering tops
- Chemical class
- synthetic aroma chemical
Запах
Докладно
Цікавий факт
Coumarin was the first synthetic fragrance ingredient ever used in a commercial perfume. William Henry Perkin synthesized it in 1868; it was marketed from 1876; and Paul Parquet deployed it in Fougere Royale (1882), founding the fougere family — still the most common family in masculine perfumery. The FDA banned coumarin from food products in 1954 (21 CFR 189.130) after hepatotoxicity studies in rats, but it remains unrestricted in perfumery at standard use levels.
Отримання й хімія
Спосіб отримання
Hay absolute is produced by solvent extraction of dried Lolium perenne (perennial ryegrass) or Hierochloe alpina (alpine sweetgrass). The dried grass is first extracted with a hydrocarbon solvent (typically hexane) to yield a concrete, which is then washed with ethanol to produce the absolute — a dark brown paste or viscous olive-brown liquid. Yield is approximately 1 kg of absolute per 250 kg of dried plant material. No essential oil of hay exists via steam distillation — the relevant molecules (principally coumarin, MW 146.14) are too heavy and non-volatile in the living plant. Synthetic coumarin, produced industrially via the Perkin reaction since the 1870s, is the standard commercial material and costs a fraction of the natural absolute.
- Формула
- Complex mixture — key compound: coumarin (C₉H₆O₂)
- CAS
- 8031-00-3
- Ботанічна назва
- Lolium perenne (perennial ryegrass) / Hierochloe alpina (alpine sweetgrass)
- Зовнішній вигляд
- Dark brown paste to viscous olive-brown liquid
- Сила запаху
- Середня
- Стійкість
- 400 hours at 100.00%
- Синоніми
- DRIED GRASS, FOIN, FOIN COUPE
Restricted (IFRA Standard 023, Amendment 49 — coumarin content limited by category; Category 4 fine fragrance: max 1.5% coumarin in finished product)
- Температура спалаху
- > 200.00 °F. TCC ( > 93.33 °C. )
У парфумерії
Hay — through its key molecule coumarin — occupies a foundational position in perfumery. It is the harmonic center of the fougere family: the lavender-coumarin-oakmoss skeleton that Paul Parquet codified in 1882. Coumarin bridges floral hearts to woody-mossy bases, providing warm sweetness and strong fixative properties. Beyond fougere, coumarin appears in amber, amber, tobacco, chypre, and powdery compositions. Natural hay absolute provides a richer, more multi-faceted version of the coumarin note than the synthetic isolate alone. It is used in high-end formulas for its jammy depth, tobacco quality, and honey warmth — qualities the pure synthetic cannot replicate. Dihydrocoumarin (CAS 119-84-6) offers a related but more lactonic, coconut-inflected alternative. PREMIEREPEAU features hay absolute from Grasse as a fond note in Nuit Elastique (/products/nuit-elastique-jasmine-night-perfume), where it contributes coumarinic warmth and tobacco-like tenacity beneath the jasmine-carnation accord.
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