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.
Triethyl Phosphate
1. Basic Product Information
Product Name: Triethyl Phosphate
CAS Number: 78-40-0
Molecular Formula: C6H15O4P
Molecular Weight: 182.15
Synonyms: Phosphoric acid triethyl ester, TEPO
Product Category: Organic phosphate solvent, plasticizer, flame retardant additive, pharmaceutical synthetic intermediate, extraction agent
2. Physical and Chemical Properties
Physical Indicators
- Appearance: Colorless transparent oily liquid
- Odor: Faint mild sweet ester odor
- Solubility: Miscible with ethanol, methanol, acetone, benzene and ether; slightly soluble in water, gradually hydrolyzed in long-term aqueous environment
- Boiling Point: 210–215 °C (760 mmHg)
- Melting Point: -56 °C
- Density (20 °C): 1.068–1.072 g/cm3
- Refractive Index (20 °C): 1.405–1.407
- Flash Point: 115 °C
- Hygroscopicity: Slightly hygroscopic under high humidity air
- Aqueous Stability: Stable under neutral and weakly acidic short-term aqueous conditions; hydrolysis occurs rapidly under strong alkaline heating to produce ethanol and phosphate salts
Chemical Characteristics
- Molecular Structure: Triester derivative of orthophosphoric acid with three ethyl ester side chains
- Core Functional Mechanism: Polar high-boiling solvent; flame retardant plasticizer for resins; extraction solvent for rare metal separation; ester intermediate for phosphorus-containing drug synthesis
- Photostability: Stable under normal sealed storage; no obvious light-induced discoloration
- Thermal Stability: Stable below 150 °C; above 180 °C, thermal decomposition releases irritating phosphorus-containing volatile fumes
- Chemical Compatibility: Compatible with most organic solvents and neutral resin raw materials; incompatible with strong oxidants, concentrated strong alkalis and metal hydroxides
3. Main Application Fields
- Core Application: Industrial Solvent & Plasticizer
High-boiling polar solvent for resin, coating and printing ink production; flame retardant plasticizer for cellulose, polyvinyl chloride and polyurethane materials - Rare Metal Extraction Reagent
Extraction agent for separation and purification of rare earth, uranium and other metal ions in hydrometallurgy - Pharmaceutical Synthetic Intermediate
Phosphorus-containing ester starting material for manufacturing organophosphorus drug intermediates - Electronic Chemical Auxiliary
Electrolyte additive for lithium battery and capacitor formulations to improve flame resistance - Laboratory Analytical Reagent
Organophosphorus standard for chromatographic calibration and extraction chemistry research
4. Platform Category & Product Group Guidance
1) Domestic B2B Platform Category
Recommended Path: Organic Intermediates / Phosphorus Fine Chemicals
Reason: Trialkyl phosphate industrial solvent widely used in plastic, metallurgy and electronic chemical industries
2) English Product Group Dropdown Options
Recommended Selection: Basic Organic Chemicals
Do NOT solely classify as pharmaceutical chemicals; it is universal industrial phosphorus ester raw material
3. Standard Foreign Trade Packaging Specification
1L sealed glass bottle for lab test samples; 200L PE-lined galvanized iron drum for bulk industrial orders
5. Quality Specification Table
| Test Item | Standard Requirement |
| CAS Number | 78-40-0 |
| Molecular Formula | C6H15O4P |
| Appearance | Colorless transparent liquid without visible suspended impurities |
| GC Purity | Industrial Grade ≥99.0%, Electronic Grade ≥99.5% |
| Water Content (KF Method) | ≤0.10% |
| Chroma (APHA) | ≤20 |
| Acid Value (mgKOH/g) | ≤0.10 |
| Heavy Metals (Pb) | ≤10 ppm |
| Standard Storage Package | Airtight sealed dark plastic drum, dry ventilated warehouse storage |
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