2-acetylthiophene
Description
2-Acetylthiophene (CAS 88-15-3), also known as methyl 2-thienyl ketone, is a sulfur-containing heterocyclic compound used as a flavoring and fragrance ingredient.
It delivers a roasted, nutty, and slightly meaty character that food and fragrance formulators rely on to build complex aroma profiles in various industrial applications.
In flavor creation, it contributes roasted and savory notes to snack seasonings, meat analogs, and processed food products where depth and warmth are required for the consumer.
Fragrance houses incorporate it into compositions targeting smoky, woody, or gourmand accords, particularly in fine fragrance and personal care applications for high-end markets.
It is also used in coffee and cocoa flavor systems, where its roasted sulfurous character reinforces natural aroma authenticity and enhances the overall sensory experience.
Tobacco flavor formulations represent another established end use, where it supports the characteristic warm and earthy profile required for traditional and modern products.
This product is supplied as a liquid at standard commercial purity levels, typically 98% and above, ensuring consistent performance across different manufacturing batches.
It is available in flavor-grade quality suitable for food and cosmetic applications, with documentation to support regulatory compliance in all major global markets.
Physical Properties
| Melting Point | 10.5 °C |
| Boiling Point | 214.0 °C |
| Density | 1.16711 g/cm³ (liquid) @ Temp: 65 °C; Press: 4.88 x 10⁵ Torr |
| Flash Point | 196 °F |
| Appearance | clear colorless to slightly yellow liquid |
| Color | Clear pale yellow to light brown |
| Odor | at 100.00 %. sulfurous nutty hazelnut walnut |
| Form | Liquid |
| Water Solubility | Insoluble in water. |
| Vapor Pressure | 2.7 hPa (50 °C) |
| Refractive Index | n 20/D 1.565(lit.) |
| Log P | 1.250 |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29349990 |
| UN Number | 2810 |
| ADR Class | 6.1 |
| Packing Group | II |
| Storage Class | 6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
| WGK (Germany) | 3 |
Documentation
Other Names
1-(2-Thienyl)-ethanone|methyl 2-thienyl ketone|1-thiophen-2-yl-ethanone|2-Acetothienone|2-Acetothiophene|Ethanone, 1-(2-thienyl)-|2-Thienyl methyl ketone|Ketone, methyl 2-thienyl
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