✦ Synthetic muguet aroma chemical delivering a powerful clean lily of the valley and fresh floral scent profile
✦ Extremely low odor threshold — small quantities produce strong diffusion in candles, wax melts, and reed diffusers
✦ Excellent tenacity on fabric and wax making it popular in home fragrance and laundry fragrance applications
✦ Core building block in classic floral, fresh, and clean fragrance accords used in mainstream perfumery for decades
✦ Blends seamlessly with other florals, aldehydes, musks, and woody bases to add lift and brightness
✦ Subject to EU cosmetic ban (March 2022) and IFRA 51st Amendment restrictions — not recommended for leave-on skin products
✦ Supplied as cosmetic-grade synthetic aroma chemical — verify regulatory compliance for your specific application and market

Lilial, known by its INCI name Butylphenyl Methylpropional, is a synthetic aromatic aldehyde developed in the mid-twentieth century as a muguet and lily of the valley replacement. It became one of the most commercially important floral aroma chemicals in the fragrance industry, appearing in countless personal care products, fabric softeners, shampoos, and fine fragrances from the 1970s through the 2000s. Its appeal lay in its clean, bright, non-indolic floral character that differed from the heavier white florals of jasmine or ylang.

What makes Lilial distinctive is the combination of its very low odor threshold with its long-lasting substantivity on certain substrates, particularly textiles and wax. A small concentration delivers outsized olfactory impact, making it economical for high-volume applications. Its clean facets — balancing between a fresh, almost aquatic brightness and a soft aldehydic powdery warmth — gave it enormous versatility in blending. It became the backbone of the clean laundry and fresh floral tropes that defined mass-market fragrance aesthetics for two generations.

Bio Shop Pakistan supplies cosmetic-grade Lilial suitable for experienced formulators, candle makers, reed diffuser blenders, and home fragrance applications where the ingredient is legally permitted under applicable local regulations.

SCENT DESCRIPTION : Lilial opens with an immediate clean, bright, green-floral rush reminiscent of freshly cut lily of the valley stems. The heart reveals a soft aldehydic warmth that lifts the floral character into an airy, almost powdery freshness. There is a subtle fruity-cyclamen nuance woven beneath the muguet, giving the material unexpected depth. The drydown settles into a clean, softly woody-floral base with lasting tenacity.

NOTE POSITION : Mid Note (with strong top diffusion)

FRAGRANCE FAMILY : Floral / Fresh / Aldehydic

FACETS : Muguet · Clean · Powdery · Aldehydic · Green-Floral

TENACITY : High — 12 to 20 hours on fabric; moderate on skin

SILLAGE : High — projects strongly at low concentrations; diffuses readily in open spaces

Chemical Name : 2-(4-tert-Butylbenzyl)propionaldehyde
INCI Name : Butylphenyl Methylpropional
CAS Number : 80-54-6
Synonyms : BMHCA, Lysmeral, p-tBucinal, Lilial, 2-(p-tert-Butylbenzyl)propionaldehyde
Molecular Formula : C14H20O
Molecular Weight : 204.31 g/mol
Purity : ≥98%
Appearance : Colorless to pale yellow clear liquid
Odor Threshold : Approximately 0.003–0.01 ppm (very low — powerful odor impact)
Solubility : Soluble in alcohol and fragrance oils; practically insoluble in water
Specific Gravity : 0.951–0.965 at 20°C
Refractive Index : 1.502–1.507 at 20°C
Flash Point : Approximately 99–104°C (closed cup)
Boiling Point : Approximately 270°C
Type : Synthetic aroma chemical

Fine Fragrance : ★★★☆☆
Lilial was historically a staple of mainstream fine fragrance, especially in floral, fresh, and clean accords. However, due to IFRA 51st Amendment restrictions and EU regulations, its use in leave-on skin applications including EDP and EDT is now heavily restricted. Use only where local regulations explicitly permit and within verified IFRA-compliant limits.

Candle & Wax Melts : ★★★★★
Lilial performs excellently in candles, soy wax, and wax melts. It offers strong cold and hot throw, excellent stability in most wax types, and a clean muguet note that blends well with fruity, fresh, and white floral candle accords. This is one of the safest and most practical applications for this material today.

Reed Diffuser & Home Fragrance : ★★★★☆
Reed diffusers and room sprays benefit greatly from Lilial's powerful diffusion and clean profile. It creates an immediate sense of freshness that consumers associate with clean interiors. Blends well with citrus, aquatic, and woody notes in home fragrance applications.

Industrial & Fabric Fragrance : ★★★☆☆
Lilial has traditionally been used in detergents, fabric softeners, and laundry fragrance for its powerful textile substantivity. Regulatory scrutiny has increased in this category due to residual skin contact. Verify local regulations and ensure usage is within permitted limits before use in commercial products.

Incense & Solid Perfume : ★★★★☆
In incense sticks, cones, and non-skin-contact solid fragrance objects, Lilial delivers a reliable clean floral effect at modest usage rates. Its low odor threshold means very small quantities are effective, making it cost-efficient in these applications.

RECOMMENDED USAGE RATES (Starting Points — Adjust to Formulation)

Application : Suggested Starting Rate
EDP : Not recommended — IFRA restricted (see below)
EDT : Not recommended — IFRA restricted (see below)
Body Lotion : Not recommended — EU banned in cosmetics
Shampoo/Body Wash : Not recommended — EU banned in cosmetics
Candle : 0.5% – 2.0% of fragrance oil weight
Reed Diffuser : 2.0% – 5.0% of total blend
Soap (rinse-off) : Verify current IFRA limits — very low if permitted

IFRA 51ST AMENDMENT STATUS

⚠️ Lilial (Butylphenyl Methylpropional) is classified as a CMR Category 2 substance for reproductive toxicity. Under the IFRA 51st Amendment, it is prohibited or restricted to extremely low limits across most consumer product categories. The European Union banned its use in all cosmetic products effective March 1, 2022, under Commission Regulation (EU) 2021/1902.

⚠️ Always consult the current IFRA guidelines (ifrafragrance.org) and local cosmetic regulations for your specific market before using Lilial in any finished product intended for skin contact or consumer use.

⚠️ Bio Shop Pakistan supplies this material as a raw aroma chemical. The responsibility for regulatory compliance in any finished product lies entirely with the formulator.

METHOD 1 — Clean Muguet Solo Accord
Use Lilial at 8–15% of a fragrance concentrate to build a clean lily of the valley accord. Anchor with a small amount of Hedione or Cyclamen Aldehyde for naturalness. Add a touch of Linalool for smoothness. This forms the backbone of a classic clean floral accord suitable for non-skin home fragrance.

METHOD 2 — Fresh Floral Candle Accord
Combine Lilial at 10–15% with Iso E Super at 5%, a citrus top (Limonene or Bergamot EO) at 20%, and a soft musk at 15–20% in a DPG carrier. This creates a fresh, airy floral candle accord with excellent cold and hot throw.

METHOD 3 — Laundry & Clean Accord
For detergent and home fragrance, pair Lilial with Galaxolide or Habanolide musk at a 1:2 ratio. Add a small amount of Lemon or Grapefruit aroma chemical and a touch of Ambroxan for depth. This builds the classic clean laundry trope with lasting diffusion.

BEST PAIRINGS

Hedione → Adds natural jasmine transparency and rounds the floral character
Cyclamen Aldehyde → Amplifies the muguet facet and adds watery freshness
Galaxolide → Grounds the floral with a clean musky warmth and improves tenacity
Iso E Super → Contributes a woody, smooth ambiance that balances the brightness
Linalool → Softens and naturalizes the overall accord
Bergamot EO → Lifts with citrus freshness and improves the top note opening
Ambroxan → Adds depth and diffusion to the drydown without competing

AVOID
Avoid combining with heavy phenolic or tar-like materials — these clash with the clean nature of Lilial and produce discordant results. Avoid overuse — above 15% in a concentrate, Lilial becomes harsh and synthetic. Do not use in any product intended for lip, eye, or mucous membrane contact.

I have worked with Lilial across candle blending and home fragrance development, and what still impresses me after all this time is its sheer broadcasting power. A single drop in a room fragrance trial immediately communicates clean, fresh, and expensive — which explains why it became such an industry workhorse for so many decades before the regulatory picture changed. The sadness in the perfumery community over its restrictions is real, because Lilial had a quality of lightness that is genuinely difficult to replace. Its CMR classification is a reminder that olfactory beauty and biological safety are entirely separate questions.

ADVANCED TIP : When using Lilial in candle or reed diffuser work, pre-blend it into your DPG or fragrance carrier at 1% the day before your full formulation session. Lilial benefits from brief maceration — it integrates more smoothly into complex accords and its sharp top edge softens, revealing the cleaner, more refined muguet character beneath. This small step prevents the material from dominating the accord before the other components have had time to bind.

Physical State : Liquid at room temperature
Skin Safety : ⚠️ Sensitizer — avoid direct skin contact; EU cosmetic ban applies; use appropriate PPE when handling raw material
Eye Contact : ⚠️ Irritant — avoid contact; rinse immediately with water for 15 minutes if contact occurs; seek medical advice
Ingestion : ⚠️ Harmful if swallowed — do not ingest; seek immediate medical attention if ingested
Ventilation : Work in a well-ventilated area or under a fume hood when handling in bulk quantities
CMR Status : ⚠️ CMR Category 2 (reproductive toxicity) — handle with appropriate precautions
Storage : Store in a cool, dry, dark place away from direct sunlight and heat sources; ideal temperature 10–25°C
Shelf Life : 2–3 years from manufacture date when stored correctly in sealed containers
Container : Amber glass or HDPE containers with airtight closure recommended to prevent oxidation
Flammability : Flash point approximately 99–104°C — combustible liquid; keep away from open flames and ignition sources

Q: Can I use Lilial in a perfume or body lotion sold in Pakistan?
A: Lilial is banned in cosmetics in the EU and restricted under IFRA standards. Pakistani regulations may differ, but selling products globally that contain Lilial in leave-on applications carries significant regulatory and liability risk. It is strongly advised to avoid leave-on skin applications.

Q: What is the best use for Lilial today given the restrictions?
A: Candles, reed diffusers, incense, and non-skin home fragrance products are the safest and most practical applications. Lilial performs excellently in these categories with strong cold and hot throw in wax.

Q: Why does Lilial smell so strong even at very low percentages?
A: Lilial has an extremely low odor threshold of approximately 0.003–0.01 ppm. The human nose detects it at very small concentrations, which is why it can dominate a blend if overused. Start at 0.5–1% in your fragrance oil and adjust upward carefully.

Q: How do I handle Lilial safely in my workshop?
A: Wear nitrile gloves, safety glasses, and work in a ventilated space. Avoid skin and eye contact. Store in a sealed amber glass or HDPE bottle away from sunlight and heat. Wash hands thoroughly after handling.

Q: How does Lilial compare to Lyral and other muguet aroma chemicals?
A: Lyral (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde) is another classic muguet chemical that is similarly restricted due to high sensitization rates. Lilial has a cleaner, less floral and more aldehydic-fresh profile than Lyral. Modern alternatives such as Triplal, Floralozone, and Cyclamen Aldehyde can partially replicate the muguet effect with better regulatory profiles, though none fully replicate Lilial's specific clean brightness.