Helional

СинтетичнийСИНТЕТИЧНІ МОЛЕКУЛИквітковий · акватичний · зелений
Ноти серцяПіраміда
—Сила
60годСтійкість
—Походження
Зразок
Helional як парфумерна сировина
Ноти серця
Визначення

Helional is an aldehyde used as a perfume. Its aroma is described as watery, fresh, green, ozone, cyclamen and hay.

КВІТКОВИЙ ЗЕЛЕНИЙ АКВАТИЧНИЙ СВІЖИЙ
2-piperonylpropanal, ocean propanal, Tropional, Heliofolal, Heliogan, Heliobouquet, MMDHCA
Type
Складник
Olfactive family
Акватичні
Source
synthetic molecule
Chemical class
aldehyde
Інструменти
Піраміда
ВВерхні ноти
СНоти серця
ББазові ноти
Стійкість на блотері
60годин · 3 днів
1 год6 год24 год3 дн.7 дн.400 год
за 1 %

Запах

The aroma is described as floral, fresh, melon, ozone and marine. Another description gives the odor as floral and herbaceous. A fresh watery-melon top is followed by a sweet heliotrope and cyclamen heart, with new-mown-hay and soft almond-anisic facets. The dry-down is described as mild and green-anisic.

Докладно

Identity and chemistry

Helional has the IUPAC name 3-(1,3-benzodioxol-5-yl)-2-methylpropanal and the molecular formula C₁₁H₁₂O₃. Its molar mass is 192.21 g/mol. Chemically it is an aldehyde with a hydrocinnamaldehyde motif, a structural element present in a number of other commercial fragrances and odorants. It is insoluble in water and soluble in ethanol. Its records list EC number 214-881-6, FEMA number 4599 and JECFA number 2212.

Relation to heliotropin

Helional is commonly derived from heliotropin, which is also called piperonal. Piperonal has a floral odor commonly described as similar to vanillin or cherry, and its formula, C₈H₆O₃, is smaller than that of helional.

Safety labelling

The GHS signal word for helional is Warning, and its hazard statements are H315, H319 and H335.

Explore all seven extraits in the Discovery Set.

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Related: Airy Note · Aluminum · Ozone Acetaldehyde · River Notes · Steam Accord · Water

Цікавий факт

Helional is the only one of 100 odorants that activated the human olfactory receptor OR17-40 when a mixture of 100 odorants was tested on cells carrying that receptor. Piperonal, safrole and vanillin, which resemble it in structure, did not activate the receptor.

Отримання й хімія

Спосіб отримання

Several synthetic routes exist. The most common is a crossed aldol condensation between piperonal (heliotropin) and propanal, followed by selective hydrogenation of the intermediate alkene. This produces a racemic product.

Формула
C₁₁H₁₂O₃
CAS
1205-17-0
Зовнішній вигляд
Pale yellow to yellow clear oily liquid
Стійкість
About 60 hours on a blotter at 1 %
Синоніми
2-piperonylpropanal, ocean propanal, Tropional, Heliofolal, Heliogan, Heliobouquet, MMDHCA
Статус IFRA
Обмежено

Restricted — IFRA Standard « alpha-Methyl-1,3-benzodioxole-5-propionaldehyde (MMDHCA) » (Amendment 49)

Фізичні властивості
Температура кипіння
282 °C
Відносна густина
1.162 g/cm³

У парфумерії

Helional is used as a perfume in soap and laundry detergent. It is also a substance added to food as a flavoring agent or adjuvant.

Роль у формулі
01модифікатор
02сполучний компонент
03свіжість
04дифузія
Форми випуску
синтетична речовина

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