Molekula
Tetraethylammonium hydroxide 40% solution in water
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Tetraethylammonium hydroxide 40% solution in water is a strong organic base used in organic synthesis, catalysis, and as a reagent in the production of specialty chemicals. It is a clear, colorless to pale yellow liquid with a characteristic ammoniacal odor. CAS: 77-98-5, Molecular formula: (C2H5)4N(OH), Molecular weight: 147.26 g/mol. Store at ambient temperature. Hazardous: corrosive, causes severe skin burns and eye damage. Molekula supplies Tetraethylammonium hydroxide 40% solution in water from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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500 mL — £301.00 per pack ex VAT · £361.20 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless to light yellow transparent liquid |
| Assay | ≥35% |
| APHA | ≤20Hazen |
| Bromine (Br) | ≤500ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 43910420 |
| CAS Number | 77-98-5 |
| IUPAC Name | tetraethylazanium hydroxide |
| EC Number | 201-073-3 |
| Molecular Formula | (C2H5)4N(OH) |
| Molecular Weight | 147.26 |
| Exact Mass | 147.1623 |
| SMILES | CC[N+](CC)(CC)CC.[OH-] |
| InChIKey | LRGJRHZIDJQFCL-UHFFFAOYSA-M |
| InChI | InChI=1S/C8H20N.H2O/c1-5-9(6-2,7-3)8-4;/h5-8H2,1-4H3;1H2/q+1;/p-1 |
| PubChem CID | 6509 |
| UN Number | UN3267 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29239000 |
| Tariff Code | 2923900090 |
Safety & GHS
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Corrosive
GHS05
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Toxic
GHS06
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H290 May be corrosive to metals
- H302 Harmful if swallowed
- H311 Toxic in contact with skin
- H314 Causes severe skin burns and eye damage
- H318 Causes serious eye damage
- H370 Causes damage to organs
- H372 Causes damage to organs through prolonged or repeated exposure
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P231 Handle under inert gas
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P271 Use only outdoors or in a well-ventilated area
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P310 Immediately call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in Czech, English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 77-98-5(water)
- Ammonium, tetraethyl-, hydroxide
- ETHANAMINIUM, N,N,N-TRIETHYL-, HYDROXIDE
- Ethanaminium, N,N,N-triethyl-, hydroxide (1:1)
- Hydroxide, Tetraethylammonium
- IPC-TEA-OH
- n,n,n-triethylethanaminium hydroxide
- Tetraethylammonium hydroxide(TEAH)
- Tetraethylammonium hydroxyde
- tetraethylazanium;hydroxide
Frequently asked questions
What is tetraethylammonium hydroxide used for?
It is primarily used as a strong base in organic synthesis, particularly in elimination reactions and as a phase-transfer catalyst.
What is the chemical formula and molecular weight?
The formula is (C2H5)4N(OH) and the molecular weight is 147.26 g/mol.
How should tetraethylammonium hydroxide be stored?
It should be stored at ambient temperature, away from light and moisture, and kept in a tightly sealed container.
What grade is available?
Molekula supplies tetraethylammonium hydroxide as a reagent-grade 40% solution in water.
Can Molekula supply it in bulk?
Yes, Molekula can supply tetraethylammonium hydroxide in bulk quantities; please contact our sales team for details.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.