Galaxolide aka. Musk G HHCB Aroma Chemical
CAS# 1222-05-5

Galaxolide is the trade name registered by IFF for the compound HHCB, whose full chemical name is 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-gamma-2-benzopyran. It is also known by other names such as Musk 50 or Abbalide. Belonging to the family of polycyclic musks-synthetic musks made entirely from petrochemical feedstocks-this material was invented at IFF by the chemists Heering and Beets in 1965 as a replacement for expensive, unethical animal musk and for nitro musks, which are toxic and chemically less stable. The introduction of Galaxolide effectively solved both the cost and alkaline-stability problems, making it the world’s highest-volume musk. In its neat 100% form, it is a colorless liquid but extremely viscous and glue-like. Therefore, in practical compounding, it must be pre-diluted in solvents such as DEP, IPM, or Benzyl Benzoate for easier handling, resulting in common commercial grades such as Galaxolide 50, which contains 50% active material.

Description

In terms of odor character, this material has a clean musk scent with a touch of powdery sweetness and a soft floral nuance, reminiscent of freshly laundered clothes or clean skin after a shower-without any animalic “funk.” Although its diffusion strength is only moderate, with a smooth, gentle radiance rather than a sharp intensity, Galaxolide is exceptionally tenacious, lasting for weeks on a blotter strip and lingering for a long time on fabrics. Working mainly in the base, it acts as an excellent odor modifier that rounds off harsh notes, adds smoothness, and provides a solid foundation for most modern perfumes. When combined with Hedione and Iso E Super, the trio forms the famous Grojsman Accord, creating a massive, long-lasting base that diffuses well and blends easily with virtually any floral or woody note. In addition, pairing Galaxolide with aldehydes can yield a classic vintage soap effect with an especially clean impression.

Applications

Thanks to its outstanding substantivity even after harsh wash-and-dry processes, its largest application is in laundry products such as detergents, liquid detergents, and fabric softeners. Beyond that, it is widely used in commercial perfumes and cosmetics such as shower gels, body lotions, and deodorants. Usage levels are highly flexible, ranging from 1% to 30% or higher; in perfumery it is often used at 5% to 20%, while laundry products typically use much larger amounts. IFRA considers Galaxolide skin-safe and does not impose a specific concentration limit. However, while it is generally mild for users, it has faced environmental controversy due to poor biodegradability and a tendency to accumulate, which is why today’s green-chemistry trend is gradually replacing it with more eco-friendly musks such as Helvetolide or Romandolide. Another important point is that a certain proportion of the population has odor blindness (anosmia) and cannot smell it at all. For storage, it is sufficient to keep the material in a dry, cool, well-ventilated place, as it is chemically stable and not easily oxidized. On the market, Galaxolide is the backbone of The Body Shop White Musk, contributes legendary softness to Lancôme Trésor at a level reportedly reaching 21% under perfumer Sophia Grojsman, and is the source of the “clean laundry” smell in products such as Tide, Ariel, and Downy. Finally, it is worth noting that Steffen Arctander’s Perfume and Flavor Chemicals (published in 1969) does not mention this material, because at that time Galaxolide had only recently been invented, remained an internal IFF captive, and had not yet been widely commercialized-so the author focused instead on the then-common nitro musks or macrocyclic musks of that era.