Hay absolute

Chemotypes :

Several hay species are part of the genus Lolium L. . In contrast, only Lolium perenne L. is grown and extracted in perfumery.

Extraction process :

The plants that constitutes hay are deliberately planted for their growth and dried in the sun. Large areas of culture are needed as these plants are invasive. The cultivation of hay is made by vehicles like tractors or with a scythe, once the herbs are dried.
Hay absolute is obtained by macerating the hay in hexane in order to obtain a concrete of hay. After removing the plants from the extractor and evaporating the hexane, the concrete is collected and the hexane recycled. The concrete is diluted in alcohol and glazed at 32 °F. After evaporation of the solvent, the absolute is obtained.
Sometimes the hay absolute can be distilled to be bleached, without a great olfactory impact.

Uses in perfumery :

Used in luxury perfumery for chypre, fougere, amber, tobacco and for a long-lasting aromatic note.

Stability :

Solubility issues in perfumes
Stable oil in perfumes and in diverse functional bases

Other comments :

Hay is a mixture of sun-dried plants : mainly sweet vernal grass, sweet-scented bedstraw and liatrix among others. The drying allows to evaporate the smell molecules of the most volatile plants and allows to keep the heavier molecules only.
The presence of liatrix in particular contributes to the high rate of coumarin of this absolute (about 15%). These characteristics of culture explain its good tenacity.

Hay is a mixture of sun-dried plants : mainly sweet vernal grass, sweet-scented bedstraw and liatrix among others. The drying allows to evaporate the smell molecules of the most volatile plants and allows to keep the heavier molecules only.
The presence of liatrix in particular contributes to the high rate of coumarin of this absolute (about 15%). These characteristics of culture explain its good tenacity.

Allergens :

Coumarin

Signal word :

-

Hazard pictograms :

Precautionary statements :

IFRA 51^th :

This ingredient is restricted by the 51th amendment

Annexe I :

Some regulated synthetic ingredients are found in nature and in certain proportions in natural ingredients. This presence in nature has to be taken into account when calculating limits of use recommended by the IFRA. In case you do not know these concentrations, you can use the ones estimated by the IFRA. Here they are :

Disclaimer :

ScenTree is solely responsible for the information provided here.

To learn more about IFRA's standards : https://ifrafragrance.org/safe-use/library