Triethanolamine CAS#102-71-6
Good Solubility: Easily miscible with water and common organic solvents, enabling flexible formulation and processing.
Strong Alkalinity: Acts as an effective base with a high pH, suitable for neutralization and condensation reactions.
Thermal Stability: High boiling point ensures stable performance under various industrial conditions.
Versatile Chemical Functionality: Amine–alcohol structure supports wide applications in chemical synthesis and formulations.
Products Description of Triethanolamine CAS#102-71-6
Triethanolamine, also referred to as trihydroxyethylamine or amino triethanol, is a colorless, oily liquid with a mild ammonia-like odor. It is hygroscopic and may darken when exposed to air or light at elevated temperatures. Under low-temperature conditions, it solidifies into colorless to pale yellow cubic crystals.
It has a melting point of 21.2 °C and a boiling point of 335.4 °C, or 277 °C at 19.950 kPa and 206–207 °C at 1.995 kPa. The relative density is 1.1242, and the refractive index is 1.4852. Its base dissociation constant (Kb) is 2.5 × 10⁻¹⁰, and the pH of a 0.1 mol/L aqueous solution is about 10.5.
Triethanolamine is completely miscible with water, methanol, and acetone, soluble in benzene and ether, and slightly soluble in carbon tetrachloride and n-heptane. As a strong organic base, it readily accepts protons and is commonly used in condensation reactions.
Parameters
| Melting point | 17.9-21 °C (lit.) |
| Boiling point | 190-193 °C/5 mmHg (lit.) |
| density | 1.124 g/mL at 25 °C (lit.) |
| vapor density | 5.14 (vs air) |
| vapor pressure | 0.01 mm Hg ( 20 °C) |
| refractive index | n20/D 1.485(lit.) |
| Fp | 365 °F |
| storage temp. | Store at RT. |
| solubility | H2O: 1 M, clear, colorless |
| form | Oily Liquid |
| Specific Gravity | 1.125 (20/20℃) |
| color | Clear colorless to slightly yellow |
| PH Range | 7.3 - 8.3 |
| Odor | Mild ammoniacal. |
| PH | 10.5-11.5 (25℃, 1M in H2O) |
| pka | 7.8(at 25℃) |
| explosive limit | 3.6-7.2%(V) |
| Water Solubility | soluble |
| Sensitive | Air Sensitive & Hygroscopic |
| λmax | λ: 280 nm Amax: 0.1 |
| Merck | 149665 |
| BRN | 1699263 |
| Exposure limits | ACGIH: TWA 5 mg/m3 |
| Dielectric constant | 6.9（40℃） |
| InChIKey | GSEJCLTVZPLZKY-UHFFFAOYSA-N |
| LogP | -2.3 at 25℃ |
| Surface tension | 46.4mN/m at 293.15K |
| CAS DataBase Reference | 102-71-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Triethanolamine(102-71-6) |
| IARC | 3 (Vol. 77) 2000 |
| EPA Substance Registry System | Triethanolamine (102-71-6) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36/37/38-36 |
| Safety Statements | 26-39-36 |
| WGK Germany | 1 |
| RTECS | KL9275000 |
| F | 37917 |
| Autoignition Temperature | 600 °F |
| TSCA | Yes |
| HS Code | 29221310 |
| HS Code | 29321900 |
| Hazardous Substances Data | 102-71-6(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 2000 mg/kg |
Product Application of Triethanolamine CAS#102-71-6
Triethanolamine is widely used across pharmaceutical, chemical, and industrial fields. It serves as an active pharmaceutical ingredient and pharmaceutical raw material, as well as an amino alcohol applied in organic synthesis. It is commonly used as an HPLC solvent, a gas chromatography reference standard (color marker), and an analytical standard substance.
In the chemical industry, triethanolamine functions as an organic solvent, catalyst, emulsifier, additive, and chemical auxiliary. It is an important intermediate for synthetic materials, fluorine chemistry, sulfur-containing compounds, and other organic chemical products. It is also utilized as a biochemical reagent, material intermediate, and processing agent in various manufacturing processes.
Additionally, triethanolamine is applied in food processing as a food additive and processing aid, and it is categorized among amines, nitrogen-containing compounds, and general laboratory reagents. Its broad applicability makes it a key raw material in organic chemistry, genomics and molecular diagnostics, and the wider organic chemical industry.
