Ethyltriphenylphosphonium bromide
- Createtime： 2026-04-14
- Updatetime： 2026-09-30
Product Details
| useage |
Industrial use
|
| deliveryInfo |
|
| appearance |
powder
|
| Molecular Weight |
361.27
|
| aliasen |
|
| supplyCapacity |
50000MT/Month
|
| harbor |
Qingdao,China
|
| minorder |
1KG
|
| Appearance |
White to off-white crystalline powder
|
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.
Ethyltriphenylphosphonium bromide
1. Basic Product Information
Product Name: Ethyltriphenylphosphonium bromide
Abbreviation: ETPPBr
CAS Number: 1530-32-1
Molecular Formula: C??H??BrP
Molecular Weight: 361.27
Synonyms: Triphenylethylphosphonium bromide
Product Category: Organic phosphonium salt, Wittig reaction reagent, organic synthetic intermediate, phase transfer catalyst
2. Physical and Chemical Properties
Physical Indicators
- Appearance: White to off-white crystalline powder
- Odor: Odorless
- Solubility: Soluble in dichloromethane, chloroform, ethanol, methanol; slightly soluble in acetone; insoluble in water, petroleum ether, hexane
- Melting Point: 203–206 °C
- Density (20 °C): 1.23 g/cm3
- Hygroscopicity: Slightly hygroscopic under high humidity conditions
- Aqueous Stability: Stable in neutral cold water; slow hydrolysis occurs under strong alkaline heating
Chemical Characteristics
- Molecular Structure: Quaternary phosphonium salt with one ethyl group and three phenyl groups attached to central phosphorus atom, paired with bromide anion
- Core Reactivity: Classic Wittig reagent precursor; deprotonated by strong bases to generate ethylidene Wittig ylide, which converts aldehydes/ketones into terminal alkenes
- Phase Transfer Catalysis: Acts as lipophilic quaternary phosphonium phase transfer catalyst for biphasic organic synthesis reactions
- Photostability: Mildly light-sensitive; prolonged UV exposure causes slight yellowing and minor decomposition
- Thermal Stability: Stable below 180 °C; decomposes above melting point, releasing irritating organophosphorus and bromide volatile fumes
- Chemical Compatibility: Compatible with anhydrous polar organic solvents; incompatible with strong aqueous alkali, strong oxidants and metal reducing agents
3. Main Application Fields
- Core Application: Wittig Reaction Synthetic Reagent
Primary raw material for the preparation of terminal alkenes via carbonyl olefination; widely used in the synthesis of pharmaceutical intermediates, fine chemicals and natural product skeletons - Phase Transfer Catalyst
High-efficiency phosphonium phase transfer catalyst for biphasic substitution, condensation and cyclization reactions - Laboratory Organic Chemistry Research Substrate
Standard reagent for carbonyl olefination methodology research and organic heterocycle construction - Fine Chemical & Fragrance Intermediate Raw Material
Key building block for synthesizing alkene-containing perfume compounds and cosmetic raw materials
4. Platform Category & Product Group Selection Guide
1) Domestic B2B Platform Category
Recommended Path: Organic Intermediates / Organic Intermediates
Reason: It is a quaternary phosphonium organic synthetic reagent, general fine organic intermediate without exclusive pharmaceutical or catalyst-only classification.
2) English Product Group Dropdown Options
Recommended Selection: Basic Organic Chemicals
Do NOT select Pharmaceutical Chemicals; it is a universal laboratory & industrial synthesis reagent rather than regulated human pharmaceutical bulk drug.
3. Standard Foreign Trade Packaging Specification
1kg aluminum foil vacuum bag for laboratory samples; 25kg fiber drum lined with double PE inner bags for bulk industrial orders; customized packaging specifications are available upon request
5. Quality Specification Table
| Test Item | Standard Requirement |
| CAS Number | 1530-32-1 |
| Molecular Formula | C??H??BrP |
| Appearance | Uniform white crystalline powder without yellow discoloration |
| HPLC Purity | Synthetic Grade ≥99.0%, Lab Reagent Grade ≥99.5% |
| Melting Point | 203–206 °C |
| Water Content (KF Method) | ≤0.20% |
| Single Unknown Impurity | ≤0.10% |
| Total Related Substances | ≤0.40% |
| Heavy Metals (Pb) | ≤10 ppm |
| Standard Storage Package | Light-proof nitrogen-sealed aluminum foil vacuum bag, 25kg PE lined fiber drum |
