Floral > Light Flowers > Aldehydes > Fresh Flowers > Aquatic

Lyral®

Kovanol® ; Leerall® ; 4-(4-hydroxy-4-methylpentyl)cyclohex-3-ene-1-carbaldehyde ; Cyclohexal ; 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde ; Kovyral ; Landolal ; Lanyral ; Lydoucal ; Lysinal ; Mugonal

Lyral® (CAS N° 31906-04-4)​

Photo credits: ScenTree SAS

Company Ingredient Name ID Naturality Purity Latin name Treated part Geographical origin Certifications Comments MOQ
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Lyral® - 30gr - - - - - - more -
Information Générales

General Presentation

  • CAS N° : : 31906-04-4

  • EINECS number : 250-863-4

  • FEMA number : Donnée indisponible.

  • Density : 0,995

  • Optical rotation : Lorem Ipsum

  • Allergens : This ingredient does not contain any allergen.

  • Refractive Index @20°C : Lorem Ipsum

  • Volatility : Heart

  • Price Range : €€

  • Appearance : Colorless liquid that crystallizes at room temperature

  • FLAVIS number : Donnée indisponible.

  • JECFA number : Donnée indisponible.

Information on synthetic ingredients

  • Acid Value : Lorem Ipsum

  • Boiling Point : 121°C

  • Detection Threshold : 0,1 ng/l air

  • Molecular formula : C13H22O2

  • Log P : 2,08

  • Molecular Weight : 210,32 g/mol

  • Fusion Point : -20°C

  • Flash Point : 105°C

  • Vapor pressure : Lorem Ipsum

Utilisation

Uses

Other comments :

Lyral® was subject to a recall procedure in 2019, and its use will be banned in 2021.
It is one of the 26 allergens in perfumery.

Stability :

Aldehydes may form diethylacetals in alcoholic perfumes, with no real impact on their smell.

Uses in perfumery :

Lyral® is used in floral notes such as white flowers, lily of the valley, lilac or lily.

Year of discovery :

Discovered in 1958. Patent N°868,850 published on May 8, 1958 by IFF

Isomerism :

The positional isomer that is formed during the synthesis of Lyral® has no great olfactory difference with Lyral® used in perfumery. Geranyl Propionate is a constitutional isomer of Lyral®. Their smell is very different as Geranyl Propionate is much rosier.

Synthesis precursor :

Lyral® forms Schiff bases in the presence of amino compounds such as Methyl Anthranilate or Indole.

Natural availability :

Lyral® is not available in its natural state.

Synthesis route :

Lyral® is synthesized by a Diels-Alder reaction between Myrcenol and Acrolein (or Propenal) in the presence of a Lewis catalyst such as zinc chloride. When this reaction is performed without a catalyst and at a high temperature, it results in the formation of a mixture of two positional isomers of Lyral®, although Lyral® is still predominant (70%).

Utilisation

Regulations & IFRA

  • IFRA 51th : This ingredient is restricted by IFRA

  • Restriction type : RESTRICTION

  • Cause of restriction : DERMAL SENSITIZATION AND SYSTEMIC TOXICITY

  • Amendment : 49

Quantitative limit on the use :
Cat.1 Cat.2 Cat.3 Cat.4 Cat.5A Cat.5B Cat.5C Cat.5D Cat.6
0,02 % 0,02 % 0,1 % 0,2 % 0,2 % 0,2 % 0,2 % 0,067 % 0,2 %
Cat.7A Cat.7B Cat.8 Cat.9 Cat.10A Cat.10B Cat.11A Cat.11B Cat.12
0,02 % 0,02 % 0,067 % 0,2 % 0,2 % 0,2 % 0,067 % 0,067 % 91 %

Comments :

The restrictions as given for the individual categories are not based on the Quantitative Risk Assessment (QRA) methodology but solely represent a pragmatic approach to address the specific situation for 3 and 4-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde (HMPCC). This ingredient is part of the Schiff base (Lyral-methyl anthranilate (or Lyrantion) - N°CAS :67634-12-2) and induces the application of IFRA regulations for 61,3% of the Schiff base usage. Please also refer to the IFRA Annex II for more information

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