CAS 1506-02-1 corresponds to tonalide (AHTN), a widely used synthetic musk fragrance with the chemical name 6-acetyl-1,1,2,4,4,7-hexamethyltetralin. It is primarily used as a fixative in perfumes, detergents, and cosmetics.

Basic Information
- Chinese Name: Tuna Musk
- English name: 6-Acetyl-1,1,2,4,4,7-hexamethyltetralin (synonyms: Tonalide, AHTN, Fixolide)
Molecular formula: C₁₈H₂₆O
- Molecular weight: 258.40 g/mol
CAS No.: 1506-02-1
- EINECS No.: 216-133-4
- Structural type: Tetralin-based synthetic musk (isomer of Wanshan musk)

Physical and chemical properties
Appearance: colorless or white crystalline powder (some sources describe it as grayish-white)
Melting point: 52–57 °C (some literature reports 107 °C, possibly due to water of crystallization or measurement discrepancies)
- Boiling point: approximately 356.8 °C (760 mmHg)
- Density: 0.919 g/cm³
- Flash point: 149.9 °C
- Solubility: Insoluble in water, soluble in ethanol and oils; stable in nature, resistant to discoloration
- Scent: Warm, sweet musk fragrance with strong longevity and excellent diffusion

main purpose
- Widely used as a fixative in the formulations of soaps, detergents, shampoos, bath oils, perfumes, and cosmetic essences;
- In spice formulations, it can typically reach a usage of around 10%, and harmonizes well with floral, aldehydic, and oriental fragrance types;
It is also used in the preparation of synthetic civet musk and various fragrance types (such as orchid, citrus cologne, jasmine, rose, etc.).

Safety and Environmental Information
- GHS Classification: Acute oral toxicity (Category 4, H302 Harmful if swallowed); Extremely toxic to aquatic life with long-lasting effects (H410)
- Hazardous material symbol: Xn (Harmful)
Storage requirements: Store in a cool, well-ventilated place and avoid releasing into the environment
- Ecological Concern: Detected as persisting in the environment, some studies indicate its potential endocrine-disrupting risks to aquatic organisms (e.g., zebrafish), leading to usage restrictions or evaluations in multiple countries.

This substance is not classified as a food additive and is strictly prohibited for use in food or clinical medical applications. It is limited to industrial flavoring and research purposes only.

Products :

CAS 1506-02-1 (Tonalide, AHTN, Tuna Musk), C18H26O
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