Aromavault

Identifiers

Manufacturer

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CAS number

70356-09-1

CAS (all sources)

70356-09-1

CAS (Perfumiarz)

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CAS (PerfumersWorld)

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CAS (FraterWork)

70356-09-1

CAS (EU Hekserij)

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CAS (TSCA Hekserij)

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INCI name (FraterWork)

BUTYL METHOXYDIBENZOYLMETHANE

IUPAC name (FraterWork)

1-(4-tert-butylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione

INCI (Hekserij)

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EC number (Hekserij)

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FEMA (Hekserij)

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UN number

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Synonyms (PerfumersWorld)

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Synonyms (FraterWork)

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Scent profile

Odour profile (FraterWork)

Avobenzone is a white to pale yellow crystalline powder with a weak, virtually imperceptible odour — a functional UVA absorber that prevents yellowing and photodegradation in finished fragrances without affecting the scent.

Appearance (FraterWork)

White powder Odour Profile: Avobenzone is a white to pale yellow crystalline powder with a weak, virtually imperceptible odour — a functional UVA absorber that prevents yellowing and photodegradation in finished fragrances without affecting the scent. Uses: Prevents yellowing and UVA degradation in fine fragrances, especially those containing vanillin or citrus oils. INCI Name: BUTYL METHOXYDIBENZOYLMETHANE IUPAC Name: 1-(4-tert-butylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione

Descriptions

Comment (FraterWork)

Avobenzone is the most effective UVA absorber available to perfumers. This crystalline powder shields the full UVA range (320–400 nm, peaking at 357 nm) — the long-wave light that yellows liquids and breaks down vanillin. At typical use levels, it adds no perceptible odour to your composition. Dissolve Avobenzone in a co-solvent — benzyl benzoate, IPM, or Octinoxate — by heating to 80–85°C until completely clear. Its solubility in pure ethanol is poor (under 1%), so alcohol-based fragrances need a carrier oil in the formula. Compositions containing vanillin or citrus oils benefit most from its protection. The catch: Avobenzone is photounstable and degrades in light unless stabilised. Always include Oxynex ST at 0.5% — it quenches the reactive excited state that causes degradation, boosting photostability dramatically. Never combine Avobenzone with Octinoxate alone — without a stabiliser, the two accelerate each other's breakdown. AVOBENZONE VS OCTINOXATE Avobenzone and Octinoxate protect against different portions of the UV spectrum. Avobenzone absorbs UVA (320–400 nm) — the longer-wavelength light responsible for yellowing liquids and degrading vanillin and other phenolics. Octinoxate absorbs UVB (280–320 nm) — the shorter-wavelength radiation that attacks terpenes, aldehydes, and other volatile components. Avobenzone is a crystalline powder that must be heated to 80–85°C in a co-solvent to dissolve; Octinoxate is a pourable liquid that incorporates instantly and can dissolve up to 26% Avobenzone by weight. In theory they make a perfect pair, but they destabilise each other through photocyclisation unless a photostabiliser like Oxynex ST is included as a third ingredient. With Oxynex ST present (just 0.5% of the finished formula), the combination provides excellent broad-spectrum UV protection for your fragrances. aromachem NEW powder

Notes

Avobenzone is the most effective UVA absorber available to perfumers. This crystalline powder shields the full UVA range (320–400 nm, peaking at 357 nm) — the long-wave light that yellows liquids and breaks down vanillin. At typical use levels, it adds no perceptible odour to your composition. Dissolve Avobenzone in a co-solvent — benzyl benzoate, IPM, or Octinoxate — by heating to 80–85°C until completely clear. Its solubility in pure ethanol is poor (under 1%), so alcohol-based fragrances need a carrier oil in the formula. Compositions containing vanillin or citrus oils benefit most from its protection. The catch: Avobenzone is photounstable and degrades in light unless stabilised. Always include Oxynex ST at 0.5% — it quenches the reactive excited state that causes degradation, boosting photostability dramatically. Never combine Avobenzone with Octinoxate alone — without a stabiliser, the two accelerate each other's breakdown. AVOBENZONE VS OCTINOXATE Avobenzone and Octinoxate protect against different portions of the UV spectrum. Avobenzone absorbs UVA (320–400 nm) — the longer-wavelength light responsible for yellowing liquids and degrading vanillin and other phenolics. Octinoxate absorbs UVB (280–320 nm) — the shorter-wavelength radiation that attacks terpenes, aldehydes, and other volatile components. Avobenzone is a crystalline powder that must be heated to 80–85°C in a co-solvent to dissolve; Octinoxate is a pourable liquid that incorporates instantly and can dissolve up to 26% Avobenzone by weight. In theory they make a perfect pair, but they destabilise each other through photocyclisation unless a photostabiliser like Oxynex ST is included as a third ingredient. With Oxynex ST present (just 0.5% of the finished formula), the combination provides excellent broad-spectrum UV protection for your fragrances. aromachem NEW powder

Usage

Uses (FraterWork)

Prevents yellowing and UVA degradation in fine fragrances, especially those containing vanillin or citrus oils.

IFRA 51 (FraterWork)

No restriction for category 4 Appearance: White powder Odour Profile: Avobenzone is a white to pale yellow crystalline powder with a weak, virtually imperceptible odour — a functional UVA absorber that prevents yellowing and photodegradation in finished fragrances without affecting the scent. Uses: Prevents yellowing and UVA degradation in fine fragrances, especially those containing vanillin or citrus oils. INCI Name: BUTYL METHOXYDIBENZOYLMETHANE IUPAC Name: 1-(4-tert-butylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione

Links

FraterWorkhttps://fraterworks.com/products/avobenzone

Avobenzone

Comments