In short
Hercolyn D is a deodorised methyl ester of hydrogenated pine rosin. It is almost odourless and is used as a fixative, blender and viscous carrier.
What Hercolyn D smells like
Fraterworks describes Hercolyn D as a high-quality deodorised hydrogenated pine resin, extremely viscous and light amber, virtually odourless, a fixative and blender whose thickness adds body and texture to dilutions, and notes its use with mastic absolute to extend IFRA-compliant oakmoss in reformulations of Mitsouko. dsm-firmenich's own listing calls it almost odourless with subtle ambery undertones, and an excellent fixative with remarkable stability.
- Leading note
- No single note leads in the published descriptions
- Character
- Viscous
What makes Hercolyn D distinctive
Virtually odourless: valued for the body and texture its viscosity gives a dilution, and as a fixative and blender.
How Hercolyn D is used
Used as a fixative and blender, to add body and texture to dilutions, and to extend mossy notes.
Typical role: fixative (slow to evaporate; helps a blend last and holds lighter notes); solvent (dilutes or carries other materials).
How Hercolyn D differs from similar materials
- Caprylic/Capric Triglyceride
- Caprylic/capric triglyceride is a light, thin oil carrier; Hercolyn D is extremely viscous and gives a dilution body and fixation.
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
Extremely viscous and light amber in colour. Its commercial supplier has changed over the years; Fraterworks sells it as Firmenich's.
Identity and classification
- Type
- Solvent or carrier
- Origin
- Semi-synthetic
- Odour family
- No odour family
- Note position
- Base note
- Physical form at room temperature
- Viscous liquid
- Also known as
- Methyl hydrogenated rosinate, Hydrogenated rosin methyl ester
- CAS number
- 8050-15-5
The CAS number was checked on 24 October 2026 against a PubChem substance record that gives it for this material. A natural material is a mixture, so it has no single formula; its composition varies with origin and processing.
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
-
Oakmoss Absolute
Absolute · Chypre / Green — mossy, earthy, inky, forest floor
-
Benzyl Benzoate
Solvent or carrier · No odour family — faint, balsamic
-
Dipropylene Glycol (DPG)
Solvent or carrier · No odour family — odourless
Used in formulas and accords
Used in 2 published formulas
Hercolyn D is an ingredient in 1 perfume formula and 1 accord in the Formula & Accord Library.
Further reading
Questions about Hercolyn D
Is Hercolyn D natural or synthetic?
Hercolyn D is semi-synthetic: it is made by chemically modifying a natural raw material.
What is the CAS number of Hercolyn D?
8050-15-5, the registry number for the solvent or carrier as a substance rather than a single molecule. It was checked against PubChem on 24 October 2026.
Which published formulas use Hercolyn D?
Hercolyn D is used in 2 published formulas in the RUŌOD Lab Formula & Accord Library: Blue Accord and Hindi Maliki Qadeem. Each is listed with a link under "Used in formulas and accords" on this page.
Sources
- PubChem — substance 135361302, checked 24 October 2026.
- Fraterworks — Hercolyn D — distributor's description.
- dsm-firmenich — Hercolyn D (PE 900019) — manufacturer'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.