hay oil

Hay oil, also known by its botanical source Lolium perenne, is a natural essential oil exhibiting a delicate sweet herbal odor reminiscent of fresh clary sage and new-mown hay. Distinguished by its complex herbal tea notes, this fragrance raw material is commonly referenced as lolium perenne l. oil or ryegrass oil. Its appearance typically ranges from a pale yellow to greenish liquid. Sourced primarily via steam distillation from the aerial parts of perennial ryegrass (Lolium perenne), it holds significance for flavor and fragrance sectors. For chemical classification and further data, a reliable source is the PubChem database. The oil’s characteristic botanical aroma contributes to its utilization in perfuming compositions and cosmetic preparations.

Derived from Lolium spp., particularly Lolium perenne, hay oil naturally occurs in these common grass species. It captures the scent of freshly cut grass and hay, replicating an herbal, green fragrance note known in many ecosystems where these grasses prevail. Hay oil finds primary applications as a perfuming agent in the cosmetic and fragrance industries due to its warm, dry herbal profile. It is formulated to impart notes reminiscent of carnation, fern, forest air, jasmine, and tobacco. Though sometimes employed as a flavoring for tea, regulatory guidance such as the IFRA Code of Practice (Global) advises against its use for flavoring purposes at significant levels. Additionally, its characteristic aroma extends to formulations evoking straw-like or spice-related fragrances. The oil complements natural and niche olfactory blends demanding authentic hay or grassy accords.

Hay oil’s physical and chemical characteristics influence its performance in fragrance and cosmetic formulations. It is typically a light to moderately viscous liquid with a pale yellow to greenish hue, reflecting its botanical origin and extraction process. The aromatic profile is stable under normal storage conditions, preserving its sweet, fresh, and herbal notes. Its solubility in common fragrance solvents supports versatile use in scented products. Although exact boiling points and density values vary depending on compositional nuances, the oil’s volatility contributes to its clean top and middle notes in blends. No classified hazards under OSHA regulations support its safe handling within recommended use parameters. These features enable hay oil to be effectively incorporated into complex aromatic compositions without adverse interactions or degradation.

	lolium perenne l. oil
Canada Domestic Sub. List:	8031-00-3
Pubchem (sid):	3730722
	lolium spp. oil
Canada Domestic Sub. List:	100209-32-3
Pubchem (sid):	3805015

Export Tariff Code:	3301.29.6000
Wikipedia:	View
FAO:	BASIC PRINCIPLES OF STEAM DISTILLATION

Safety information

Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Pictogram
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined

Safety in use information

Category:
cosmetic and fragrance agents
RIFM Fragrance Material Safety Assessment: Search
IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice
Recommendation for hay oil flavor usage levels up to:
	not for flavor use.

Safety references

AIDS Citations:Search

Cancer Citations:Search

Toxicology Citations:Search

EPA Substance Registry Services (TSCA):8031-00-3

EPA ACToR:Toxicology Data

EPA Substance Registry Services (SRS):Registry

National Institute of Allergy and Infectious Diseases:Data

WGK Germany:2

lolium perenne l. oil

Chemidplus:0008031003

lolium spp. oil

Chemidplus:100209323