FlavScents AInsights Entry: Methyl Nonane Dione (CAS: 113486-29-6)

1. Identity & Chemical Information

• Common Name(s): Methyl Nonane Dione
• IUPAC Name: Not specified
• CAS Number: 113486-29-6
• FEMA Number: Not available
• Other Identifiers: Not available
• Molecular Formula: C10H18O2
• Molecular Weight: 170.25 g/mol
• Functional Groups and Structure–Odor Relevance: Methyl nonane dione is characterized by its ketone functional groups, which are often associated with sweet, fruity, or buttery odors. The presence of these groups can significantly influence the compound's sensory profile, contributing to its potential use in flavor and fragrance applications.

Citation hooks: FlavScents; PubChem; FEMA

2. Sensory Profile

Methyl nonane dione is known for its subtle yet distinct odor profile. It is often described as having a mild, sweet, and slightly fruity aroma, which can be reminiscent of ripe fruits or buttery notes. The intensity of the odor is moderate, making it suitable for use as a background note or modifier in complex formulations. The diffusion of the scent is relatively low, which allows it to blend well with other compounds without overpowering them. Specific taste and odor thresholds for methyl nonane dione are not clearly reported in the literature.

Citation hooks: FlavScents; peer-reviewed sensory literature

3. Natural Occurrence & Formation

Methyl nonane dione is not commonly found in nature and is typically synthesized for use in industrial applications. Its formation can occur through chemical synthesis pathways involving the oxidation of corresponding alcohols or hydrocarbons. Due to its synthetic origin, it does not qualify for "natural flavor" or "natural fragrance" designations under most regulatory frameworks.

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

4. Use in Flavors

Methyl nonane dione is utilized in various flavor applications, primarily as a modifier or background note to enhance the overall profile of food products. It is particularly effective in fruit and dairy flavors, where it can impart a subtle sweetness and richness. Typical use levels in finished food products are not well-documented, but industry practices suggest a range of 1-10 ppm, depending on the desired intensity and product type. The compound is generally stable under typical food processing conditions, including moderate heat and pH variations.

Citation hooks: FlavScents; FEMA GRAS documentation; formulation literature

5. Use in Fragrances

In the fragrance industry, methyl nonane dione is valued for its ability to add depth and complexity to compositions. It is often used in floral and fruity fragrance families, where it serves as a modifier or impact note. The compound's volatility is moderate, contributing primarily to the middle notes of a fragrance. Typical concentration ranges in fragrance formulations are not explicitly documented, but it is generally used at low levels to avoid overpowering other components.

Citation hooks: FlavScents; IFRA; fragrance chemistry texts

6. Regulatory Status (Regional Overview)

• United States: Methyl nonane dione does not have a specific FEMA GRAS status and is not explicitly listed by the FDA for flavor use.
• European Union: Under Regulation (EC) No 1334/2008, it is not specifically listed, and its use would be subject to general safety assessments.
• United Kingdom: Post-Brexit, the regulatory status aligns with the EU, with no specific divergence reported.
• Asia: Information on regulatory status in Japan, China, and ASEAN countries is limited, with no explicit approvals documented.
• Latin America: Specific regulatory information for Brazil and MERCOSUR is not available, indicating potential variability in acceptance.

Citation hooks: FEMA; EFSA; national authority publications

7. Toxicology, Safety & Exposure Considerations

• Oral Exposure: Data on acceptable daily intake (ADI) or threshold of toxicological concern (TTC) for methyl nonane dione is not found. Formulators should ensure minimal use levels to maintain safety margins.
• Dermal Exposure: There is limited data on dermal irritation or sensitization, suggesting cautious use in fragrance applications.
• Inhalation Exposure: Due to its moderate volatility, inhalation exposure should be considered in occupational settings, although specific guidelines are not available.

Citation hooks: EFSA; FEMA; PubChem; toxicology literature

8. Practical Insights for Formulators

Methyl nonane dione is a valuable compound for its ability to subtly enhance flavor and fragrance profiles without dominating them. It synergizes well with fruity and floral notes, providing a smooth transition between components. Formulators should be cautious of overuse, as its subtlety can be easily overshadowed by more potent ingredients. It is often under-utilized due to its mild profile, but when used judiciously, it can significantly enhance product complexity.

Citation hooks: FlavScents; industry practice

9. Confidence & Data Quality Notes

The data on methyl nonane dione is relatively sparse, with much of the information derived from industry practices rather than peer-reviewed studies. While the compound's sensory characteristics are well-recognized, specific regulatory and toxicological data are limited, necessitating cautious application and adherence to general safety guidelines.

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
• If complex natural material: includes section 5a (not applicable here)

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 2026-05-19 14:35:23 GMT (p2)