Choline base solution
Choline base solution (CAS: 123-41-1), with the linear formula (CH 3 )3N(OH)CH2CH2OH and a molecular weight of 121.18 g/mol, is a versatile organic base. It is typically supplied as an aqueous solution of approximately 50% (w/w), stabilised with 0.5% paraformaldehyde. This compound serves as a crucial reagent in chemical synthesis and finds applications as a basic catalyst and intermediate in various organic reactions.
- IUPAC
- (2-Hydroxyethyl)trimethylammonium hydroxide,Choline solution
- Synonyms
- Choline base solution(2-Hydroxyethyl)trimethylammonium hydroxide

Organic Synthesis Reagent
Choline base solution acts as a strong organic base, facilitating reactions such as deprotonation, esterification, and condensation. Its properties make it valuable in the preparation of complex organic molecules.
Catalysis
The alkaline nature of choline base solution allows it to function as a catalyst in various chemical transformations. It can be employed in processes requiring a basic environment for efficient reaction kinetics.
Intermediate in Chemical Manufacturing
As a functionalised quaternary ammonium compound, choline base can be used as a building block or intermediate in the synthesis of more complex chemical structures for diverse industrial applications.
| Molecular weight | 121.18 |
|---|---|
| Linear formula | (CH3)3N(OH)CH2CH2OH |
| Density | 0.945 g/mL at 25 °C |
| Refractive index | n20/D 1.4186 |
| Concentration | ~50 % (w/w) in H2O |
| Storage temperature | 2-8°C |
| Contains / stabiliser | 0.5% paraformaldehyde as stabilizer |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 3267 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Choline base solution used for?
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Choline base solution is primarily used as a reagent in organic synthesis and as a basic catalyst in chemical manufacturing. It serves as a valuable intermediate for producing other chemical compounds.
What is the CAS number and formula for Choline base solution?
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The CAS number for Choline base solution is 123-41-1. Its linear formula is (CH 3 )3N(OH)CH2CH2OH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Choline base solution at a concentration of approximately 50% (w/w) in water, stabilised with 0.5% paraformaldehyde. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should Choline base solution be handled safely?
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Choline base solution is classified as dangerous, causing severe skin burns and eye damage (H314). Always wear appropriate personal protective equipment, including gloves, goggles, and face shields. Handle in a well-ventilated area and follow stringent safety protocols to avoid contact.
How is Choline base solution shipped and exported?
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Choline base solution is shipped and exported according to international regulations for hazardous materials, identified under UN 3267, Class 8, Packing Group II. TSS ensures compliant packaging and documentation for all shipments.
How can I request a sample or quote for Choline base solution?
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To request a sample or a quote for Choline base solution, please contact our sales team via the website or by phone, providing your specific requirements and shipping details.
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