Molekula
Tetrabutylammonium 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 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Tetrabutylammonium hydroxide 40% solution in water is a quaternary ammonium salt commonly used as a phase transfer catalyst, pH regulator, and reagent in organic synthesis, including polymerizations and nucleophilic substitutions. It is also applied in analytical chemistry and electrochemical processes. This chemical has a CAS number of 2052-49-5, with the molecular formula C16H37NO and a molecular weight of 259.47. It is stored at ambient conditions and carries a Danger signal word.
Molekula supplies Tetrabutylammonium hydroxide 40% solution in water at 39.0% - 41.0% purity in 100 mL and 500 mL packs, from £107.64 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 2 languages. Larger quantities, up to multi-tonne, are quoted on request.
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.
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100 mL — £89.70 per pack ex VAT · £107.64 inc. VAT
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500 mL — £275.60 per pack ex VAT · £330.72 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 |
| Colour (Pt-Co) | ≤20 |
| Assay | 39.0% - 41.0% |
| Potassium (K) | ≤5ppm |
| Sodium (Na) | ≤5ppm |
| Bromine (Br) | ≤500ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 12269822 |
| 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 |
| Tariff Code | 29239000 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H314 Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
Documents
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 (40% solution in water) commonly used for?
This solution is primarily used as a phase-transfer catalyst in organic synthesis, as a reagent in polymer chemistry, and in analytical chemistry for ion-selective electrodes.
What is the molecular formula and molecular weight of tetrabutylammonium hydroxide?
The molecular formula is C₁₆H₃₇NO and the molecular weight is 259.47 g/mol (for the anhydrous form; the 40% solution accounts for water content).
How should tetrabutylammonium hydroxide (40% solution) be stored?
Store in a tightly sealed container at ambient temperature, away from moisture, strong oxidizers, and incompatible materials. Avoid exposure to air to prevent CO₂ absorption.
What grades or purities of tetrabutylammonium hydroxide does Molekula supply?
Molekula supplies this product as a 40% solution in water with a purity suitable for research and industrial applications. Higher or alternative concentrations may be available upon request.
Can Molekula supply tetrabutylammonium hydroxide in bulk quantities?
Yes, we offer bulk quantities of tetrabutylammonium hydroxide (40% solution) to accommodate large-scale research or industrial needs. Contact us for pricing and availability.
What documentation is provided with an order of tetrabutylammonium hydroxide?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation detailing purity, concentration, and safety handling instructions.
Where can I buy Tetrabutylammonium hydroxide 40% solution in water?
Directly from Molekula, which lists Tetrabutylammonium hydroxide 40% solution in water in 100 mL and 500 mL packs from £107.64 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Is Tetrabutylammonium hydroxide 40% solution in water dangerous goods for shipping?
Yes. Tetrabutylammonium hydroxide 40% solution in water ships as dangerous goods: UN3267, class 8, packing group II.
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