Molekula
Tetrabutylammonium hydroxide 20% solution in water N(CH2CH2CH2CH3)4OH
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Tetrabutylammonium hydroxide is a quaternary ammonium compound used as a strong organic base in phase-transfer catalysis, organic synthesis, and pH adjustment in industrial processes. This 20% aqueous solution (CAS 2052-49-5) has a molecular formula of C16H37NO and a molecular weight of 259.47. It requires ambient storage and is classified with a signal word of *Danger*. Molekula supplies Tetrabutylammonium hydroxide 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.
Often bought together
Pricing & pack sizes
In stock — same-day dispatch
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.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
100 mL — £57.30 per pack ex VAT · £68.76 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless transparent liquid |
| Purity | ≥20% in H2O |
| Carbonate (CO3(2-)) | ≤0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 90029690 |
| CAS Number | 2052-49-5 |
| IUPAC Name | tetrabutylazanium hydroxide |
| EC Number | 218-147-6 |
| Molecular Formula | C16H37NO |
| Molecular Weight | 259.47 |
| Exact Mass | 259.2875 |
| SMILES | CCCC[N+](CCCC)(CCCC)CCCC.[OH-] |
| InChIKey | VDZOOKBUILJEDG-UHFFFAOYSA-M |
| InChI | InChI=1S/C16H36N.H2O/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;/h5-16H2,1-4H3;1H2/q+1;/p-1 |
| PubChem CID | 2723671 |
| UN Number | UN3267 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2923.90.0100 |
| Tariff Code | 2923900090 |
Safety & GHS
-
Corrosive
GHS05
Hazard statements
- H290 May be corrosive to metals
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P304+P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+P351+P338 IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do, continue rinsing
- P406 Store in a corrosive resistant container with a resistant inner liner
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1-Butanaminium, N,N,N-tributyl-, hydroxide
- 1-Butanaminium, N,N,N-tributyl-, hydroxide (1:1)
- Ammonium, tetrabutyl-, hydroxide
- N,N,N-Tributyl-1-butanaminium hydroxide
- TBAH
- Tetra-n-butylammonium hydroxide
- Tetrabutylammonium Hydroxide (1.0M in Methanol)
- Tetrabutylammonium hydroxide; Tetra-n-butylammonium hydroxide
- tetrabutylammonium oxide
- tetrabutylazanium;hydroxide
Frequently asked questions
What is tetrabutylammonium hydroxide (20% solution in water) commonly used for?
This solution is primarily used as a phase-transfer catalyst in organic synthesis, as a reagent in analytical chemistry, and in the production of surfactants and specialty chemicals.
What is the molecular formula and molecular weight of tetrabutylammonium hydroxide?
The molecular formula is **C₁₆H₃₇NO** (as the free base), and the molecular weight is **259.47 g/mol** (anhydrous). The 20% aqueous solution accounts for the water content.
How should tetrabutylammonium hydroxide solution be stored?
Store at **ambient temperature** in a tightly sealed container, away from moisture, oxidizing agents, and incompatible materials. Use appropriate ventilation when handling.
What grade or purity is available for this product?
Molekula supplies this product as a **technical-grade 20% aqueous solution**, suitable for industrial and laboratory applications requiring phase-transfer catalysis.
Can Molekula supply tetrabutylammonium hydroxide in bulk quantities?
Yes, we offer bulk packaging options for this product, including drums and IBCs, to accommodate large-scale industrial and research requirements.
What documentation is provided with an order of tetrabutylammonium hydroxide?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet detailing purity, hazard warnings, 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.