Molekula
Tetrabutylammonium 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 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 analytical chemistry. This 25% aqueous solution (CAS 2052-49-5) has the molecular formula (CH₃CH₂CH₂CH₂)₄N(OH) with a molecular weight of 259.47 g/mol. Store at ambient conditions; handle with caution as it carries a Danger signal word.
Molekula supplies Tetrabutylammonium hydroxide 25% solution in water at ≥25% purity in 25 g packs, from £24.24 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and a safety data sheet is available. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
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.
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25 g — £20.20 per pack ex VAT · £24.24 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to pale yellow liquid |
| Assay | ≥25% |
| Na+K | ≤10ppm |
| Bromine (Br) | ≤100ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 90033243 |
| CAS Number | 2052-49-5 |
| IUPAC Name | tetrabutylazanium hydroxide |
| EC Number | 218-147-6 |
| Molecular Formula | (CH3CH2CH2CH2)4N(OH) |
| 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
-
Health Hazard
GHS07
Hazard statements
- H303 May be harmful if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- 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
- P308+313 IF exposed or concerned: 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 25% solution in water used for?
This solution is commonly used as a phase-transfer catalyst in organic synthesis, as a strong base in saponification reactions, and in analytical chemistry for ion-pair extraction.
What is the chemical formula and molecular weight of Tetrabutylammonium hydroxide 25% solution in water?
The formula is (CH₃CH₂CH₂CH₂)₄N(OH), and the molecular weight of the anhydrous compound is 259.47 g/mol (the solution's effective MW varies due to water content).
What safety classification and signal word does Tetrabutylammonium hydroxide 25% solution in water have?
It carries the signal word 'Danger' due to its corrosive and hazardous properties.
How should Tetrabutylammonium hydroxide 25% solution in water be stored?
Store at ambient temperature in a tightly sealed container, away from moisture, oxidizing agents, and incompatible materials.
Does Molekula supply Tetrabutylammonium hydroxide 25% solution in water in bulk quantities?
Yes, Molekula can supply this product in bulk quantities upon request, depending on availability and order size.
What documentation comes with an order of Tetrabutylammonium hydroxide 25% solution in water?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS/SDS), and a product specification sheet for reference.
Where can I buy Tetrabutylammonium hydroxide 25% solution in water?
Directly from Molekula, which lists Tetrabutylammonium hydroxide 25% solution in water in 25 g packs from £24.24 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 25% solution in water dangerous goods for shipping?
Yes. Tetrabutylammonium hydroxide 25% solution in water ships as dangerous goods: UN3267, class 8, packing group II.
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