Diphenyl Oxide, with CAS number 101-84-8, is a synthetic aroma chemical commonly used in perfumery for its unique scent profile. It is characterized by a subtle, sweet, and slightly floral aroma, which can add complexity and depth to fragrance compositions. Diphenyl Oxide is often utilized in the formulation of floral and fruity accords, where it can enhance the overall olfactory experience by providing a smooth, rounded character. In fragrance formulations, it typically serves as a supporting note, complementing other ingredients rather than dominating the scent profile. As a synthetic compound, it is important to consider safety and regulatory aspects when using Diphenyl Oxide in cosmetic products. While specific IFRA restrictions may apply, it is generally regarded as safe for use in perfumery, provided that it is used within established guidelines. However, as with any synthetic aroma chemical, it is advisable to conduct thorough safety assessments and adhere to relevant regulations to ensure consumer safety. — AI-generated summary, 2026-09-02.
Diphenyl oxide (diphenyl ether) has a distinctive geranium-like floral character with a sharp, slightly metallic and hyacinth-green edge. On a blotter it reads as a clean, airy floral with a somewhat rubbery/plastic nuance that becomes softer and more classically floral as it develops.AI · claude-opus-4-7
Composition, IFRA restriction figures, allergen concentrations and where this material is bought are part of Perfume Foundry’s curated library and need an account. Create one or sign in.
Perfume and Flavor Chemicals, page 442.
Colorless, long crystal needles, or colorless oily liquid, solidifying in the cold, melting at 28°C.
Very slightly soluble in water, soluble in alcohol and oils.
Harsh floral-green, metallic Geranium type odor. The crystals appear to emit a much milder odor than the liquid material, and it is only in actual use that one can truly estimate and evaluate the strength of this material, often underestimated by the inexperienced perfumer.
Often used in combination with Diphenyl methane or Diphenyl ethane, it finds a place in various types of fragrance for detergents and soaps, and many other household products. It is not confined exclusively to Geranium and Rose types, since Fougeres, New Mown Hay and Hyacinth, to mention a few, can benefit from this chemical. Like many other low-cost perfume chemicals, it is often an interesting tool in the hands of a skilled perfumer with audacity and imagination and an urge to use materials in an unconventional way.
Produced from Bromobenzene plus Potassium phenoxide heated with Copper at 220° C.