A3212112
Diethanolamine , AR,99% , 111-42-2
Synonym(s):
ß,ß′-Dihydroxydiethylamine, Bis-(ß-hydroxyethyl)-amine;2,2′-Iminodiethanol;Bis(2-hydroxyethyl)amine;Diethanolamine
CAS NO.：111-42-2
Empirical Formula: C4H11NO2
Molecular Weight: 105.14
MDL number: MFCD00002843
EINECS: 203-868-0
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 28 °C (lit.) |
| Boiling point: | 217 °C/150 mmHg (lit.) |
| Density | 1.097 g/mL at 25 °C (lit.) |
| vapor density | 3.6 (vs air) |
| vapor pressure | <0.98 atm ( 100 °C) |
| refractive index | n |
| Flash point: | 280 °F |
| storage temp. | 2-8°C |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | Viscous Liquid or Low Melting Solid |
| color | APHA: ≤15 |
| Specific Gravity | 1.09 |
| Odor | Mild ammoniacal; faint, fishy; characteristic. |
| PH | 11.0-12.0 (25℃, 1M in H2O) |
| pka | 8.88(at 25℃) |
| explosive limit | 2.1-10.6%(V) |
| Water Solubility | MISCIBLE |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.04 λ: 280 nm Amax: 0.02 |
| Merck | 14,3107 |
| BRN | 605315 |
| Exposure limits | TLV-TWA 3 ppm (～13 mg/m3) (ACGIH). |
| Dielectric constant | 2.8（25℃） |
| Stability: | Stable. Incompatible with carbon dioxide, strong acids, strong oxidizing agents. Deliquescent. |
| InChIKey | ZBCBWPMODOFKDW-UHFFFAOYSA-N |
| LogP | -2.46 at 25℃ |
Description and Uses
Diethanolamine is an organic base which has been used as an emulsifying and dispersing agent.It can also be used as a basic buffer, with optimal pH about pH 9, if titrated with HCl or other acid. Other uses include: to "scrub" gases, as a chemical intermediate, as humectant or softening agent.
Diethanolamine similar to triethanolamine (T775580) is used as a surfactant. It also has the potential to be a corrosion inhibitor by means of chemisorption.
Safety
| Symbol(GHS) |    GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H302-H315-H318-H361fd-H373 |
| Precautionary statements | P202-P280-P301+P312-P302+P352-P305+P351+P338-P308+P313 |
| Hazard Codes | Xn |
| Risk Statements | 22-38-41-48/22 |
| Safety Statements | 26-36/37/39-46 |
| RIDADR | 3267 |
| OEB | A |
| OEL | TWA: 3 ppm (15 mg/m3) |
| WGK Germany | 1 |
| RTECS | KL2975000 |
| F | 3 |
| Autoignition Temperature | 689 °F |
| TSCA | Yes |
| PackingGroup | II |
| HS Code | 29221200 |
| Toxicity | LD50 orally in rats: 12.76 g/kg (Smyth) |
