Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
3-Mercapto-2-butanone
1. Basic Information
Name: 3-Mercapto-2-butanone
Alias: 3-Sulfanylbutan-2-one, 2-Butanone-3-mercaptan
CAS No.: 40789-98-8
Molecular Formula: C4H8OS
Molecular Weight: 104.17
Category: Food flavor intermediate, fragrance raw material, organic synthetic intermediate
2. Physical and Chemical Properties
Physical Properties
- Appearance: Colorless to pale yellow transparent liquid
- Odor: Strong meat, roasted nut characteristic savory aroma
- Solubility: Miscible with ethanol, propylene glycol, vegetable oil; slightly soluble in water
- Melting Point: ?35 ℃
- Boiling Point: 140–142 ℃
- Density (20℃): 0.985–0.995 g/cm3
- Refractive Index nD20: 1.450–1.460
- Flash Point: 42 ℃
- Hygroscopy: Non-hygroscopic
- Aqueous property: Weakly acidic thiol group, stable under neutral and weak acid conditions
Chemical Properties
- Molecular structure: Contains ketone carbonyl and thiol (-SH) functional groups on four-carbon alkane skeleton
- Thiol oxidation: Sulfhydryl group easily oxidized by air to form disulfide impurities, color deepens to yellow
- Carbonyl reaction: Ketone group can undergo condensation reaction to synthesize new flavor derivatives
- Thermal stability: Stable below 100 ℃; long-time high temperature heating accelerates oxidation and aroma loss
- Photostability: Highly light-sensitive, UV irradiation speeds up oxidation and discoloration
- Compatibility: Compatible with alcohol, oil-soluble flavor solvents; incompatible with strong oxidants, heavy metal ions, alkaline substances
3. Main Application Fields
1. Food Flavor Raw Material (Core Application)
Savory flavor additive for meat sauce, roasted nuts, bread, instant food, tobacco essence to enhance roasted meat aroma
2. Daily Fragrance Intermediate
Raw material for meat type daily essence, pet food flavor enhancer
3. Organic Synthetic Reagent
Sulfur-containing building block for fine chemical synthesis, heterocyclic compound preparation
4. Spice Research Standard Sample
Reference substance for flavor and fragrance analytical detection
4. Quality Specification Table
| Test Item | Standard Specification |
| CAS Number | 40789-98-8 |
| Molecular Formula | C4H8OS |
| Appearance | Colorless to light yellow clear liquid without sediment |
| GC Purity | Food Flavor Grade ≥98.0% |
| Water Content (KF) | ≤0.10% |
| Chroma (APHA) | ≤150 |
| Heavy Metals (Pb) | ≤10 ppm (food grade) |
| Packaging | 100g/1L amber fluorinated bottle, 25kg PE plastic drum, 200kg iron drum |
| Storage Condition | Hermetically sealed cool dry warehouse 2–8 ℃, full light shielding, isolate air, oxidants and alkaline materials |
| Transportation Requirement | Flammable sulfur-containing flavor liquid, sealed anti-oxidation light-proof packaging |
| Shelf Life | 12 months under nitrogen sealed low-temperature storage |
Safety Warning
Low-toxic flammable irritant liquid with strong sulfur odor. Vapor irritates eyes, respiratory tract and skin; long-term skin contact causes mild allergic itching. All operations must be carried out in ventilated fume hood with nitrile gloves and splash-proof goggles. Strictly avoid contact with oxidants to prevent oxidation and malodor deterioration. Waste liquid diluted and neutralized before discharge; residual liquid classified as organic flavor hazardous waste disposed by licensed professional institutions.
