Molekula
Tetrabutylammonium hydrogen sulfate (TBAHS)
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 hydrogen sulfate (TBAHS) is a quaternary ammonium salt widely used as a phase-transfer catalyst in organic synthesis, extraction processes, and electrochemical applications. It facilitates reactions between hydrophobic and hydrophilic reagents, improving yield and efficiency in laboratory and industrial settings. This chemical has a CAS number of 32503-27-8, with the molecular formula (CH3CH2CH2CH2)4N(HSO4) and a molecular weight of 339.53 g/mol. It is stored at ambient conditions and carries a **Danger** signal word due to its hazardous properties. Molekula supplies Tetrabutylammonium hydrogen sulfate 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.
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100 g — £46.70 per pack ex VAT · £56.04 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Identification | Conforms to reference |
| Free Amine | ≤0.5% |
| Moisture | ≤0.5% |
| Concentration | ≥99% |
| Chromaticity | ≤200 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | III |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 33658706 |
| CAS Number | 32503-27-8 |
| IUPAC Name | hydrogen sulfate;tetrabutylazanium |
| EC Number | 251-068-5 |
| Molecular Formula | (CH3CH2CH2CH2)4N(HSO4) |
| Molecular Weight | 339.53 |
| Exact Mass | 339.2443 |
| SMILES | CCCC[N+](CCCC)(CCCC)CCCC.OS(=O)(=O)[O-] |
| InChIKey | SHFJWMWCIHQNCP-UHFFFAOYSA-M |
| InChI | InChI=1S/C16H36N.H2O4S/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;1-5(2,3)4/h5-16H2,1-4H3;(H2,1,2,3,4)/q+1;/p-1 |
| PubChem CID | 94433 |
| UN Number | UN3261 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29239001 |
| Tariff Code | 2923900090 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H314 (sub cat. 1C) Causes severe skin burns and eye damage
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe 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
- P302+352 IF ON SKIN: Wash with soap and water
- 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
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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.
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-, sulfate (1:1)
- hydrogen sulfate,tetrabutylazanium
- tetra-n-Butylammonium hydrogen sulfate
- tetrabutyl-ammonium sulfate
- Tetrabutylammonium bisulfate
- Tetrabutylammonium hydrogen sulfate
- Tetrabutylammonium hydrogen sulphate
- tetrabutylammonium hydrosulfate
- Tetrabutylammonium sulfate (1:1)
- tetrabutylazanium hydrogen sulfate
Frequently asked questions
What is Tetrabutylammonium hydrogen sulfate (TBAHS) commonly used for?
TBAHS is primarily used as a phase-transfer catalyst in organic synthesis, including alkylation, hydrolysis, and polymerization reactions.
What is the chemical formula and molecular weight of TBAHS?
The chemical formula is **(CH₃CH₂CH₂CH₂)₄N(HSO₄)**, and the molecular weight is **339.53 g/mol**.
How should TBAHS be stored?
Store TBAHS at **ambient temperature** in a cool, dry place, away from incompatible substances and moisture.
What purity grades of TBAHS does Molekula offer?
Molekula supplies TBAHS in **technical and reagent grades**, with purity typically ≥98% for reagent applications.
Can Molekula supply TBAHS in bulk quantities?
Yes, Molekula can provide TBAHS in bulk, with minimum order quantities (MOQs) available upon request.
What documentation comes with a TBAHS order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
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