In short
Ultrazur is a Givaudan specialty base with a marine, ozonic character and citrus and ambery facets. Its composition is Givaudan's and is not published.
What Ultrazur smells like
Givaudan tags Ultrazur as marine, ozonic, citrus, fresh and ambery: a high-impact, substantive base pairing ozonic air with sun-dried tropical woods, which adds a fresh sea aspect, volume and diffusion. Hekserij describes the sea, water, beach and ozone, and notes that it is strong.
- Leading note
- Ozonic sea air
- Supporting facets
- Citrus, ambery
- Character
- Fresh, diffusive
What makes Ultrazur distinctive
Ozonic sea air over sun-dried tropical woods: a marine base with volume and diffusion.
How Ultrazur is used
Used in traces to modify a fragrance and at several percent for a fresh, ozonic, slightly ambery effect in fine fragrance and laundry products, according to its maker.
Typical role: modifier (used in small amounts to change the character of a blend).
How Ultrazur differs from similar materials
- Azuril
- Azuril is a single citrus, clean-linen nitrile with an ozonic side; Ultrazur is a full marine base whose sea air sits over ambery woods.
Each difference compares the published descriptions of the two materials. Smell varies with grade, supplier and dilution; compare them side by side on blotters before substituting one for another.
Formulation considerations
A proprietary mixture: its maker does not publish what it contains.
Identity and classification
- Type
- Specialty base
- Origin
- Composition not published
- Odour family
- Aquatic / Amber
- Note position
- Heart note
- Physical form at room temperature
- Liquid
No CAS number is shown: Ultrazur is a proprietary blend, and a blend has no registry number of its own. Its maker does not publish its composition, so none is given here.
Safety and compliance
This page is general information, not a safety assessment or a specification. Confirm identity, composition, IFRA status and allergen content from your supplier's documents for the lot you hold.
Materials it works with
-
Calone
Aroma chemical · Aquatic / Metallic — marine, watermelon, ozonic, watery
-
Ambroxan
Aroma chemical · Amber / Woody — amber, ambergris, woody, mineral
-
Bergamot Oil (Expressed)
Essential oil · Citrus / Aromatic — citrus, zesty, floral, tea-like
Used in formulas and accords
Used in 2 published formulas
Ultrazur is an ingredient in 2 accords in the Formula & Accord Library.
Further reading
Questions about Ultrazur
Is Ultrazur natural or synthetic?
Ultrazur is a proprietary blend whose maker does not publish its composition, so whether it contains natural or synthetic materials is not stated.
Which published formulas use Ultrazur?
Ultrazur is used in 2 published formulas in the RUŌOD Lab Formula & Accord Library: Blue Accord and Solar Accord. Each is listed with a link under "Used in formulas and accords" on this page.
Sources
- Givaudan — Ultrazur — manufacturer's description.
- Hekserij — Ultrazur (Giv) — distributor's description.
- Olfactory profile: the RUŌOD Lab team's synthesis of the published descriptions above, reviewed 26 October 2026. Evidence: more than one published description. Classification and the short description: revision 1. Descriptions of odour are judgement, not measurement.