Triethanolamine CAS#102-71-6
Moisture Absorption: Triethanolamine has a high moisture-absorbing capacity, making it useful in applications requiring humidity control or moisture retention.
Versatile Solubility: It is miscible with water, methanol, and acetone, and soluble in benzene and ether, enhancing its effectiveness across a variety of formulations.
Strong Base: As a strong base, it readily reacts with protons, making it valuable in various chemical processes like condensation reactions.
Wide Boiling Range: With a boiling point of 335.4°C, triethanolamine has a high thermal stability, making it suitable for use in high-temperature processes.
Triethanolamine, also known as trihydroxyethylamine or amino triethanol, is a colorless, oily liquid with an ammonia-like odor. It has a high moisture-absorbing capacity and tends to turn brown when exposed to air or light, especially at elevated temperatures. At lower temperatures, it crystallizes into colorless or light yellow cubic lattices. The compound has a melting point of 21.2°C, a boiling point of 335.4°C (at standard pressure), and a boiling point of 277°C at 19.950 kPa.
It has a relative density of 1.1242 and a refractive index of 1.4852. The pH of a 0.1 mol/L aqueous solution is around 10.5. Triethanolamine is miscible with water, methanol, and acetone and is soluble in benzene and ether, while slightly soluble in carbon tetrachloride and n-heptane. As a strong base, it readily reacts with protons and is commonly used in condensation reactions, making it valuable in a wide range of chemical processes.
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 | 14,9665 |
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 | 3-10-23 |
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 |
