Tetraethyleneglycol monododecyl ether
Tetraethyleneglycol monododecyl ether
CAS: 5274-68-0
Molecular Formula: C20H42O5
Tetraethyleneglycol monododecyl ether - Names and Identifiers
Tetraethyleneglycol monododecyl ether - Physico-chemical Properties
| Molecular Formula | C20H42O5 |
| Molar Mass | 362.54 |
| Density | 0.946 g/mL at 20 °C(lit.) |
| Melting Point | 14°C |
| Boling Point | 185°C/0.2mmHg(lit.) |
| Flash Point | >230 °F |
| pKa | 14.36±0.10(Predicted) |
| Storage Condition | 2-8°C |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Refractive Index | n20/D 1.453 |
| Use | Use as emulsifier |
Tetraethyleneglycol monododecyl ether - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S60 - This material and its container must be disposed of as hazardous waste. |
| UN IDs | UN 3082 9/PG 3 |
| WGK Germany | 2 |
| RTECS | MD0875000 |
| FLUKA BRAND F CODES | 3 |
| HS Code | 34029000 |
Tetraethyleneglycol monododecyl ether - Upstream Downstream Industry
| Raw Materials | 2-(2-DODECYLOXYETHOXY)ETHANOL TRIETHYLENE GLYCOL MONO-N-DODECYL ETHER 2-(DODECYLOXY)ETHANOL ETHYLENE OXIDE 1-Dodecanol Bis[2-(2-hydroxyethoxy)ethyl] ether 1-Bromododecane |
Tetraethyleneglycol monododecyl ether - Nature
| BRN | 1791369 |
| EPA chemical information | Tetraethylene glycol monododecyl ether (5274-68-0) |
Last Update：2024-04-09 01:59:50
Tetraethyleneglycol monododecyl ether - Uses and synthesis methods
overview
Lauryl alcohol polyether -4 belongs to polyether defoamers. Polyether defoamers are currently a major variety of defoamers. They are non-toxic, tasteless, non-irritating, hard water and acid. It has the advantages of good compatibility with the system. Compared with another type of silicon-containing defoamers, although its defoaming performance is not high, its anti-foaming performance is quite excellent.
application
lauryl alcohol polyether -4 is used as an antistatic agent and emulsifier in cosmetics. it should be noted that there is a higher possibility of causing skin allergy and acne.
Preparation
Synthetic route of tetraethylene glycol monolauryl ether
general synthesis method: under argon protection, iodoalkane (1eq.) is added to DMF(40mL) solution containing triethylene glycol or triethylene glycol (1eq.), the mixture is cooled to 0 ℃, sodium hydride (1.5eq.60% in mineral oil) is added, stirred for 2 hours, quenched with water, extracted with ethyl acetate (20mL × 2), combined with ethyl acetate phase, and washed, then dried with anhydrous sodium sulfate, concentrated to obtain the crude product, purified by silica gel column chromatography (ethyl acetate-n-hexane), and the sample was immediately used for the next reaction.
synthesis of lauryl alcohol polyether -4 by the above general synthesis method, tritetraethylene glycol (2mL,11.59mmol) reacts with 1-iododecane (4.42g,11.59mmol) and sodium hydride (0.70g,17.38mmol) to obtain lauryl alcohol polyether -4 (2.18g,6.02mmol, 52% yield), which is colorless oil. Rf = 0.41 (ethyl acetate-n-hexane 3: 2).
Last Update：2024-04-09 21:04:16
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Raw Materials for Tetraethyleneglycol monododecyl ether