FlavScents AInsights Entry: Neroli Oil (CAS: 8016-38-4)

1. Identity & Chemical Information

Neroli oil is a natural complex material derived from the blossoms of the bitter orange tree (Citrus aurantium). It is not a single chemical compound but a mixture of various constituents. The CAS number for neroli oil is 8016-38-4. It is recognized by FEMA with the number 2771. Other identifiers include its FL number 2760 and its CoE number 257. As a complex essential oil, neroli oil does not have a single molecular formula or molecular weight. Its composition can vary significantly depending on the geographical origin, harvest time, and processing methods.

Citation hooks: FlavScents; PubChem; FEMA

2. Sensory Profile

Neroli oil is renowned for its distinctive, sweet, floral fragrance with citrusy undertones. It is often described as having a fresh, green, and slightly spicy aroma. The intensity of its scent is moderate to strong, with a high diffusion rate, making it a popular choice in perfumery as a top note. While specific taste thresholds are not well-documented, neroli oil is primarily used for its olfactory properties rather than its flavor. It serves as an impact note in fragrance compositions, providing a bright and uplifting character.

Citation hooks: FlavScents; peer-reviewed sensory literature

3. Natural Occurrence & Formation

Neroli oil is naturally sourced from the flowers of the bitter orange tree, primarily cultivated in regions such as Tunisia, Morocco, and Egypt. The oil is extracted through steam distillation of the freshly picked blossoms. Its designation as a "natural fragrance" is due to its direct derivation from plant material without synthetic modification. The formation of its characteristic aroma is attributed to the complex interplay of its constituents, including linalool, linalyl acetate, and limonene.

Citation hooks: FlavScents; food chemistry literature; EFSA/JECFA monographs

4. Use in Flavors

In flavor applications, neroli oil is used sparingly due to its potent aroma. It is typically employed in citrus and floral flavor profiles, enhancing the complexity and depth of the flavor system. The typical use levels in food and beverages are low, often ranging from 0.1 to 5 ppm, depending on the desired intensity and the matrix of the product. Stability considerations include its moderate resistance to heat and pH variations, although it is prone to oxidation, necessitating careful storage and handling.

Citation hooks: FlavScents; FEMA GRAS documentation; formulation literature

5. Use in Fragrances

Neroli oil is a staple in the fragrance industry, commonly used in floral, citrus, and oriental fragrance families. It functions as a top note, providing freshness and vibrancy to the composition. Typical concentration ranges in perfumes are between 0.5% to 5%, depending on the desired impact and the complexity of the fragrance. Its volatility contributes to its role as a top note, offering an initial burst of aroma that gradually transitions to the middle notes.

Citation hooks: FlavScents; IFRA; fragrance chemistry texts

5a. Key Constituents (Typical)

Neroli oil's composition includes several key constituents that contribute to its characteristic aroma. Major components typically include linalool (20-30%), linalyl acetate (10-20%), and limonene (5-10%). Other notable constituents are nerolidol, geraniol, and alpha-terpineol. The exact composition can vary based on factors such as geographical origin and extraction method.

Citation hooks: FlavScents; peer-reviewed literature; authoritative industry references

6. Regulatory Status (Regional Overview)

In the United States, neroli oil is generally recognized as safe (GRAS) for flavor use by FEMA. In the European Union, it is regulated under Regulation (EC) No 1334/2008 and has an assigned FL number 2760. The United Kingdom follows similar regulations post-Brexit. In Asia, regulations vary, with Japan and China having specific guidelines for essential oils. In Latin America, countries like Brazil and MERCOSUR have their own regulatory frameworks, often aligning with international standards.

Citation hooks: FEMA; EFSA; national authority publications

7. Toxicology, Safety & Exposure Considerations

For oral exposure, neroli oil is considered safe at low concentrations typical in flavor applications, with no specific ADI or MSDI established. Dermal exposure in fragrance use is generally safe, though it may cause irritation or sensitization in sensitive individuals. IFRA provides guidelines for its use in perfumery to minimize risks. Inhalation exposure is primarily relevant in occupational settings, where adequate ventilation is recommended to prevent overexposure.

Citation hooks: EFSA; FEMA; PubChem; toxicology literature

8. Practical Insights for Formulators

Neroli oil is valued for its unique floral-citrus aroma, which can enhance both flavor and fragrance formulations. It synergizes well with other citrus and floral notes, adding complexity and brightness. Formulators should be cautious of its potency, as overuse can overwhelm a composition. It is often under-utilized in non-traditional applications, where its distinctive aroma can provide a novel twist.

Citation hooks: FlavScents; industry practice

9. Confidence & Data Quality Notes

The data on neroli oil is well-established, with extensive documentation in both flavor and fragrance applications. Industry practices are well-documented, though some variability exists due to natural composition differences. Regulatory frameworks are generally harmonized, though specific regional variations may occur.

Citation hooks: FlavScents

QA Check

• All required sections 1-9 are present
• "Citation hooks:" line is present under each section
• Flavor section includes ppm ranges
• Toxicology section covers oral, dermal, inhalation
• Regulatory section mentions US, EU, UK, Asia, Latin America
• Includes section 5a for complex natural material

About FlavScents AInsights (Disclosure)
FlavScents AInsights integrates information from authoritative government, scientific, academic, and industry sources to provide applied, exposure-aware insight into flavor and fragrance materials. Data are drawn from regulatory bodies, expert safety panels, peer-reviewed literature, public chemical databases, and long-standing professional practice within the flavor and fragrance community. Where explicit published values exist, they are reported directly; where gaps remain, AInsights reflects widely accepted industry-typical practice derived from convergent sensory behavior, historical commercial use, regulatory non-objection, and expert consensus. All such information is clearly labeled to distinguish documented data from professional guidance or informed estimation, with the goal of offering transparent, practical, and scientifically responsible context for researchers, formulators, and regulatory specialists. This section is generated using advanced computational language modeling to synthesize and structure information from established scientific and regulatory knowledge bases, with the intent of supporting—not replacing—expert review and judgment.

Generated 2026-06-11 14:07:54 GMT (p2)