Perfume and Flavor Chemicals, page 276.
Colorless mobile liquid.
Very slightly soluble in water, soluble in alcohol and oils.
Powerful, fresh, green-citrusy, slightly woody odor, lacking in sweetness and fruitiness as compared to Citral, and more suggestive of Citronella oil, inevitably if the observer is familiar with that oil.
Citronellal is occasionally used — in traces - in flavor compositions of the Citrus, Cherry, Fruit (tutti-frutti), Ginger Ale, Spice and other types.
This aldehyde is rather unstable under exposure to air, daylight and alkali, and is therefore not much used as such in perfumes or flavors. Citronella oil is less expensive and more stable. It gives a more attractive picture of the Citronellal odor in its natural modification and composition.
1) By isolation from Eucalyptus Citriodora oil or from Java/Formosa/Guatemala type of Citronella oil. 2) Synthetically from Pinene. 3) By dehydrogenation of Geraniol.
| Category | Kind | Max % | Notes | Source |
|---|---|---|---|---|
| Category 1 | Max % | 0.41% | — | DOC |
| Category 2 | Max % | 0.16% | — | DOC |
| Category 3 | Max % | 0.026% | — | DOC |
| Category 4 | Max % | 0.49% | — | DOC |
| Category 5A | Max % | 0.33% | — | DOC |
| Category 5B | Max % | 0.051% | — | DOC |
| Category 5C | Max % | 0.1% | — | DOC |
| Category 5D | Max % | 0.017% | — | DOC |
| Category 6 | Max % | 0.82% | — | DOC |
| Category 7A | Max % | 0.077% | — | DOC |
| Category 7B | Max % | 0.077% | — | DOC |
| Category 8 | Max % | 0.017% | — | DOC |
| Category 9 | Max % | 1.4% | — | DOC |
| Category 10A | Max % | 1.4% | — | DOC |
| Category 10B | Max % | 2.3% | — | DOC |
| Category 11A | Max % | 0.017% | — | DOC |
| Category 11B | Max % | 0.017% | — | DOC |
| Category 12 | No restriction | — | No Restriction | DOC |
Compliance-support only. Values resolved from the current IFRA corpus; each row cites the document excerpt it came from. Not a substitute for a qualified safety assessor.
Natural complex substances (NCSs) in which this material typically occurs.
| NCS | Botanical | Typical % |
|---|---|---|
| Eucalyptus citriodora oil | Corymbia citriodora (Hook.) K.D. Hill & L.A. Johnson | 75% |
| Citrus hystrix extract | Citrus hystrix DC | 11.7% |
| Lime oil. expressed folded (2-5X) | Citrus aurantifolia (Christman) Swingle | 5% |
| Citronella oil, Ceylon type | Cymbopogon nardus (L.) Rendle | 4.5% |
| Kumquat oil, Fortunella margarita | Fortunella (Lour.) Swingle | 3% |
| Tangerine oil terpeneless | Citrus reticulata blanco | 3% |
| Lemon oil terpeneless | Citrus limon (L.) Burm. f. | 3% |
| Mandarin oil, terpeneless | Citrus reticulata Blanco | 3% |
| Orange peel oil, sweet terpeneless | Citrus sinensis (L.) Osbeck | 2% |
| Orange oil, sweet, psoralen-free | Citrus sinensis (L.) Osbeck | 2% |
| Lime oil, cold pressed, furocoumarin free | Citrus aurantifolia (Christman) Swingle | 1.4% |
| Lime Oil, Expressed | Citrus aurantifolia (Christman) Swingle | 1.4% |
| Melissa oil (genuine Melissa officinalis L.) | Melissa officinalis L. | 1.3% |
| Litsea cubeba oil | Litsea Cubeba(Lour.) Pers. | 1.1% |
| Petitgrain lemon oil | Citrus limon (L.) Burm. f. | 1% |
| Lemon oil cold pressed | Citrus limon (L.) Burm. f. | 1% |
| Lemongrass oil, East Indian | Cymbopogon flexuosus (Nees ex Steudel) Will. Watson | 0.7% |
| Fir balsam oleoresin | Abies balsamea (L.) Mill. | 0.6% |
| Ginger Oil | Zingiber officinale Rosc. | 0.4% |
| Meyer lemon oil. cold pressed | Citrus x meyerii | 0.2% |
| Citron oil | Citrus medica L. | 0.2% |
| Geranium oil | Pelargonium graveolens l'Hertier ex Aiton | 0.15% |
| Grapefruit Oil | Citrus paradisi Macf. | 0.1% |
| Rose oil | Rosa x damascena Mill. | 0.1% |
| Petitgrain mandarin oil terpeneless | Citrus reticulata Blanco | 0.1% |
| Grapefruit oil, folded | Citrus paradisi Macf. | 0.1% |
| Murcote oil, expressed | Citrus clementina Hort. Ex Tan | 0.1% |
| Lemon oil, furocoumarin free | Citrus limon (L.) Burm. f. | 0.1% |
| Tangelo oil, expressed | Citrus x tangelo Ingram and Moore | 0.1% |
| Tangerine Oil | Citrus reticulata blanco | 0.1% |
| Petitgrain Bigarade Oil | Citrus aurantium L. spp. Amara Link | 0.05% |
| Lemon extract | Citrus limon (L.) Burm. f. | 0.03% |