1,2-Ethanedithiol
- Createtime： 2026-04-14
- Updatetime： 2026-09-30
Product Details
| useage |
Industrial use
|
| deliveryInfo |
|
| appearance |
powder
|
| Molecular Weight |
94.20
|
| aliasen |
|
| supplyCapacity |
50000MT/Month
|
| harbor |
Qingdao,China
|
| minorder |
1KG
|
| Appearance |
Colorless transparent oily liquid
|
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.
1,2-Ethanedithiol
1. Basic Information
Name: 1,2-Ethanedithiol
Alias: Ethylene dimercaptan, Ethane-1,2-dithiol
CAS No.: 540-63-6
Molecular Formula: C2H6S2
Molecular Weight: 94.20
Category: Organic synthetic cross-linking reagent, metal chelating agent, peptide deprotection reagent, heterocyclic intermediate, metal surface treatment additive
2. Physical and Chemical Properties
Physical Properties
- Appearance: Colorless transparent oily liquid
- Odor: Extremely strong pungent rotten sulfur odor, highly penetrating
- Solubility: Miscible with ethanol, methanol, acetone, chloroform, toluene; slightly soluble in water
- Boiling Point: 146–148 °C (760 mmHg)
- Density (20 °C): 1.123–1.127 g/cm3
- Refractive Index nD20: 1.555–1.559
- Flash Point: 44 °C
- Hygroscopy: Non-hygroscopic
- Aqueous property: Weakly acidic dithiol compound; stable in neutral cold water at room temperature
Chemical Properties
- Molecular structure: Two terminal -SH groups on ethane straight chain, dual active mercapto functional groups
- Thiol reactivity: Easily oxidized by air to form disulfide; undergoes alkylation, acylation, cyclization and metal complexation reactions
- Synthetic application characteristic: Classic scavenger for carbonyl protection groups in peptide and organic synthesis; forms stable five-membered dithiolane cyclic acetal with aldehydes/ketones
- Photostability: Strongly light-sensitive; UV exposure drastically accelerates air oxidation and darkens liquid
- Thermal stability: Stable below 120 °C; high-temperature heating releases highly toxic sulfur-containing irritating fumes
- Compatibility: Compatible with anhydrous polar aprotic solvents; incompatible with air, strong oxidants, alkaline substances and heavy metal ions
3. Main Application Fields
1. Organic Synthesis Deprotection & Protecting Group Reagent (Core Application)
Standard reagent for removing carbonyl protecting groups in pharmaceutical and peptide synthesis; forms reversible dithiolane derivatives for carbonyl group masking
2. Metal Ion Chelating & Electroplating Additive
Strong chelator for heavy metal ions; brightening agent and corrosion inhibitor for copper, nickel electroplating baths
3. Heterocyclic Compound Synthetic Intermediate
Raw material for synthesizing sulfur-containing heterocyclic drugs, pesticides and rubber vulcanization accelerators
4. Laboratory Analytical Reagent
Chromogenic reagent for qualitative detection of transition metal ions
4. Quality Specification Table
| Test Item | Standard Specification |
| CAS Number | 540-63-6 |
| Molecular Formula | C2H6S2 |
| Appearance | Clear colorless liquid without precipitate |
| GC Purity | Synthetic Reagent Grade ≥99.0%, Industrial Grade ≥98.5% |
| Water Content (KF) | ≤0.10% |
| Chroma (APHA) | ≤80 |
| Disulfide Impurity | ≤0.30% |
| Heavy Metals (Pb) | ≤10 ppm |
| Packaging | Light-proof nitrogen-sealed amber glass bottle; bulk 200kg nitrogen-filled lined iron drum |
| Storage Condition | Hermetically sealed cool dry warehouse below 25 °C, full light shielding, strictly isolated from air, oxidants and alkaline chemicals |
| Transportation Requirement | Flammable malodorous sulfur liquid, Class 3 flammable liquid transport standard, separated from oxidizing hazardous goods and food supplies |
| Shelf Life | 18 months under nitrogen vacuum sealed storage |
