Molekula
Tetraethylammonium hydroxide 25% 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 is a quaternary ammonium compound used as a phase-transfer catalyst, pH adjuster, and structure-directing agent in organic synthesis, polymer chemistry, zeolite synthesis, and analytical applications. It also serves as a laboratory reagent, an ion exchange agent, a chain transfer agent in polymerization, and an industrial processing aid. This 25% aqueous solution (CAS 77-98-5) features the molecular formula (C2H5)4N(OH) with a molecular weight of 147.26 g/mol. Store at ambient conditions. The product carries a Danger signal word due to its corrosive and hazardous properties. Molekula supplies Tetraethylammonium hydroxide 25% solution 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | Colorless to light yellow transparent liquid |
| Assay | 25% +/-0.5% |
| APHA | <20 hazen |
| Bromine (Br) | <500ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 25567988 |
| 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 |
| Tariff Code | 2923900090 |
Safety & GHS
-
Corrosive
GHS05
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H290 May be corrosive to metals
- H314 (sub cat. 1B) Causes severe skin burns and 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
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- 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 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 (25% solution) commonly used for?
This solution is primarily used as a phase-transfer catalyst in organic synthesis, as a pH adjuster in analytical chemistry, and as a structure-directing agent in zeolite synthesis.
What is the molecular formula and molecular weight of tetraethylammonium hydroxide?
The molecular formula is (C₂H₅)₄N(OH), and the molecular weight is 147.26 g/mol (for the free base; the 25% solution accounts for water content).
How should tetraethylammonium hydroxide solution be stored?
Store at ambient temperature in a tightly sealed container, away from moisture and incompatible substances like strong acids or oxidizing agents.
What grades or purities of tetraethylammonium hydroxide solution does Molekula offer?
We supply this as a 25% solution in water, meeting standard analytical and industrial purity requirements (approximately 25% tetraethylammonium hydroxide content).
Can Molekula provide tetraethylammonium hydroxide in bulk quantities?
Yes, we offer this product in bulk packaging (e.g., 25L, 200L drums, or IBCs) for large-scale industrial or research applications—please inquire for specific availability.
What documentation is provided with an order of tetraethylammonium hydroxide solution?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet detailing purity, hazard classification (Signal Word: Danger), and handling instructions.
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.