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Rose Oxide Aroma Chemical
CAS# 16409-43-1

Green, Herbal, Floral, Fresh, Geranium

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In the world of perfumery, there are molecules that don’t merely recreate a scent-they hold the secret to its liveliness. Rose Oxide is one such secret: an icy-cool note, a metallic glint flashing off a velvet rose. Its story begins in the 1960s, when scientists analyzed the trace constituents of Bulgarian rose oil. It was then that they identified Rose Oxide, uncovering why natural rose possesses a sharp, faintly metallic facet that earlier synthetic rose accords could never truly reproduce.

Although it occurs naturally-hidden within rose oil, geranium oil, and even in the sweet nuance of lychee or certain wines-science is what brought it into the spotlight. Major companies developed synthetic processes that allowed perfumers to use it freely, without relying on costly extraction.

Behind its appearance as a mobile, colorless liquid, this compound bursts open with a crisp green aroma characteristic of rose and geranium, distinctly accented by a pronounced metallic effect. For that reason, it has become an indispensable tool for adding brightness, definition, and a more “natural” impression to rose, geranium, and juicy fruit accords.

Description

Rose Oxide is not a gentle whisper; it is a brilliant flare-an energy jolt in the top notes. Straddling both the Floral and Green worlds, it functions as a powerful enhancer, designed to amplify diffusion and introduce a startling sharpness.

Its odor is extremely potent: dry, green, and marked by an unmistakable metallic character. It evokes the image of crushed geranium leaves or the radiant opening of a freshly blooming rose. Its impact is absolute: even at very low concentrations, it can completely transform the character of a blend. It explodes with very high diffusion, though this brightness lasts a moderate length of time-about 12 to 24 hours on a blotter.

In formulas, Rose Oxide is key to creating a more “true-to-life” rose effect, stripping away the one-dimensional syrupy sweetness of many rose materials. It is also used in fruity accords-such as lychee and raspberry-to add juiciness and freshness. It often pairs with Geraniol, Citronellol, and Phenylethyl Alcohol to build a complete rose accord, or with aldehydic notes to intensify a metallic, clean effect.

And because its power is so extraordinary, Rose Oxide is almost always pre-diluted by perfumers to 1% or 10% before being added to a formula-so that this bright flare does not overwhelm an entire fragrance “symphony.”

Applications

The sharpness and versatility of Rose Oxide allow it to shine across many categories, from strong masculine fougères to feminine floral creations. It brings a clean, fresh sensation to shower gels, shampoos, and body lotions, and it is notably stable with good performance in soap bases. Even in scented candles, it can contribute strong throw for floral notes.

However, its strength demands absolute finesse in use. Typical dosage in fine fragrance concentrate is extremely low-often only 0.01% to 0.5%-because above that, the metallic facet can become too intense. From a safety standpoint, it may be irritating in its neat form and should be stored carefully in a tightly sealed container, protected from air and light.

Rose Oxide’s influence is clearly demonstrated by its presence in major fragrances. It provides the cool metallic-green, masculine accent in Chanel Égoïste Platinum, and the fresh, incisive modern rose impression in Chloé Eau de Parfum. Steffen Arctander described Rose Oxide as one of the most powerful and important aroma chemicals ever discovered. Its effect is so strong that even trace amounts can deliver a remarkably natural lift. When used correctly, it brings diffusion and vitality that few materials can truly replace.

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Technical standards

Solubility @25˚C

Solvent Solubility (g/L)
ethanol 699.94
methanol 468.76
isopropanol 753.08
water 1.33
ethyl acetate 421.79
n-propanol 654.0
acetone 491.48
n-butanol 724.9
acetonitrile 551.22
DMF 312.69
toluene 414.43
isobutanol 530.62
1,4-dioxane 1010.95
methyl acetate 360.26
THF 1240.37
2-butanone 456.13
n-pentanol 443.24
sec-butanol 663.1
n-hexane 374.71
ethylene glycol 114.08
NMP 362.59
cyclohexane 668.04
DMSO 368.47
n-butyl acetate 552.66
n-octanol 468.55
chloroform 2196.09
n-propyl acetate 259.89
acetic acid 546.42
dichloromethane 1278.2
cyclohexanone 728.46
propylene glycol 253.11
isopropyl acetate 270.11
DMAc 294.68
2-ethoxyethanol 320.55
isopentanol 558.12
n-heptane 472.75
ethyl formate 284.71
1,2-dichloroethane 565.5
n-hexanol 1008.84
2-methoxyethanol 481.24
isobutyl acetate 206.76
tetrachloromethane 454.92
n-pentyl acetate 308.49
transcutol 1192.73
n-heptanol 399.22
ethylbenzene 229.81
MIBK 253.76
2-propoxyethanol 710.2
tert-butanol 842.24
MTBE 557.96
2-butoxyethanol 397.72
propionic acid 423.03
o-xylene 277.58
formic acid 95.3
diethyl ether 575.25
m-xylene 279.12
p-xylene 297.48
chlorobenzene 468.31
dimethyl carbonate 98.85
n-octane 134.27
formamide 104.58
cyclopentanone 627.93
2-pentanone 376.53
anisole 289.27
cyclopentyl methyl ether 597.52
gamma-butyrolactone 597.45
1-methoxy-2-propanol 456.14
pyridine 703.57
3-pentanone 288.9
furfural 525.51
n-dodecane 100.32
diethylene glycol 388.64
diisopropyl ether 219.08
tert-amyl alcohol 604.89
acetylacetone 296.34
n-hexadecane 110.82
acetophenone 248.43
methyl propionate 276.44
isopentyl acetate 468.16
trichloroethylene 1063.6
n-nonanol 380.94
cyclohexanol 784.31
benzyl alcohol 264.94
2-ethylhexanol 597.39
isooctanol 288.15
dipropyl ether 585.08
1,2-dichlorobenzene 394.11
ethyl lactate 160.03
propylene carbonate 440.89
n-methylformamide 181.28
2-pentanol 515.47
n-pentane 369.55
1-propoxy-2-propanol 605.19
1-methoxy-2-propyl acetate 379.74
2-(2-methoxypropoxy) propanol 384.27
mesitylene 199.46
ε-caprolactone 600.05
p-cymene 263.35
epichlorohydrin 652.59
1,1,1-trichloroethane 827.97
2-aminoethanol 258.31
morpholine-4-carbaldehyde 444.33
sulfolane 560.6
2,2,4-trimethylpentane 133.75
2-methyltetrahydrofuran 988.61
n-hexyl acetate 517.25
isooctane 116.74
2-(2-butoxyethoxy)ethanol 532.64
sec-butyl acetate 194.77
tert-butyl acetate 281.94
decalin 186.65
glycerin 245.26
diglyme 748.43
acrylic acid 296.13
isopropyl myristate 240.6
n-butyric acid 702.1
acetyl acetate 274.9
di(2-ethylhexyl) phthalate 217.46
ethyl propionate 216.71
nitromethane 440.21
1,2-diethoxyethane 467.55
benzonitrile 457.55
trioctyl phosphate 169.56
1-bromopropane 601.2
gamma-valerolactone 629.72
n-decanol 290.97
triethyl phosphate 174.52
4-methyl-2-pentanol 273.5
propionitrile 489.83
vinylene carbonate 392.6
1,1,2-trichlorotrifluoroethane 517.91
DMS 255.14
cumene 177.3
2-octanol 290.2
2-hexanone 308.23
octyl acetate 298.72
limonene 423.13
1,2-dimethoxyethane 519.85
ethyl orthosilicate 181.66
tributyl phosphate 199.47
diacetone alcohol 309.35
N,N-dimethylaniline 214.28
acrylonitrile 407.04
aniline 405.56
1,3-propanediol 372.01
bromobenzene 515.58
dibromomethane 1068.43
1,1,2,2-tetrachloroethane 1018.13
2-methyl-cyclohexyl acetate 330.2
tetrabutyl urea 225.95
diisobutyl methanol 298.96
2-phenylethanol 378.85
styrene 262.16
dioctyl adipate 301.81
dimethyl sulfate 123.67
ethyl butyrate 344.29
methyl lactate 168.21
butyl lactate 258.43
diethyl carbonate 236.19
propanediol butyl ether 426.21
triethyl orthoformate 277.85
p-tert-butyltoluene 252.18
methyl 4-tert-butylbenzoate 310.6
morpholine 1039.12
tert-butylamine 683.25
n-dodecanol 233.36
dimethoxymethane 262.03
ethylene carbonate 350.26
cyrene 261.08
2-ethoxyethyl acetate 304.22
2-ethylhexyl acetate 400.69
1,2,4-trichlorobenzene 444.45
4-methylpyridine 619.03
dibutyl ether 469.02
2,6-dimethyl-4-heptanol 298.96
DEF 305.28
dimethyl isosorbide 530.1
tetrachloroethylene 634.55
eugenol 271.13
triacetin 402.88
span 80 473.77
1,4-butanediol 156.38
1,1-dichloroethane 756.77
2-methyl-1-pentanol 353.46
methyl formate 144.19
2-methyl-1-butanol 534.09
n-decane 161.53
butyronitrile 652.26
3,7-dimethyl-1-octanol 403.34
1-chlorooctane 334.96
1-chlorotetradecane 158.97
n-nonane 178.5
undecane 121.3
tert-butylcyclohexane 166.33
cyclooctane 245.93
cyclopentanol 674.2
tetrahydropyran 1281.12
tert-amyl methyl ether 376.63
2,5,8-trioxanonane 562.03
1-hexene 536.94
2-isopropoxyethanol 262.27
2,2,2-trifluoroethanol 142.44
methyl butyrate 276.88

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  • CAS NUMBER

    16409-43-1

  • FAMILIES

    Floral

  • BRAND

    Takasago

  • EVAPORATION RATE

    Moderately fast

  • Odor impact

    High est.

  • FLASH POINT

    326.2 ˚C est.

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Green
Herbal
Floral
Fresh
Geranium
Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
No restriction
Category 2
Products applied to the axillae
No restriction Category 7B
Leave-on products applied to the hair with some hand contact
No restriction
Category 3
Products applied to the face/body using fingertips
No restriction Category 8
Products with significant anogenital exposure
No restriction
Category 4
Products related to fine fragrance
No restriction Category 9
Products with body and hand exposure, primarily rinse off
No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
No restriction Category 10A
Household care products with mostly hand contact
No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
No restriction
Category 5D
Baby Creams, baby Oils and baby talc
No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
No restriction
Category 6
Products with oral and lip exposure
No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
No restriction
  • All orders will be processed within 1-2 business days from the time the order is confirmed.
  • Free shipping is available for orders valued at $200 or more.
  • Delivery time is 1-3 business days for local areas, 3-7 days for suburban and nationwide deliveries, and 1-4 weeks for international orders.
  • You have 30 days from the date of receipt to initiate the return process.
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  • Certificate of Analysis (COA)

    Provides information on the physical and chemical properties of the product.
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  • IFRA Certificate of Conformity

    Sets safety standards and guidelines for the product in manufacturing.
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  • Safety Data Sheet (SDS)

    Provides important safety guidelines for transporting, storing, and using the product.
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