Benzyltrimethylammonium hydroxide solution
Benzyltrimethylammonium hydroxide solution (CAS: 100-85-6), with the formula C6H5CH2N(OH)(CH3)3 and a molecular weight of 167.25 g/mol, is a quaternary ammonium hydroxide. This alkaline compound is recognised for its utility as a phase-transfer catalyst and a strong organic base in various chemical synthesis reactions, particularly in organic chemistry research and development. It is supplied as an aqueous solution.

Phase-Transfer Catalyst
Benzyltrimethylammonium hydroxide acts as an effective phase-transfer catalyst, facilitating reactions between reactants located in different immiscible phases (e.g., aqueous and organic). This enhances reaction rates and yields by transporting reactive species across phase boundaries.
Strong Organic Base
As a potent organic base, it is employed in deprotonation reactions and as a catalyst in condensation reactions. Its strong basicity makes it suitable for applications where a non-nucleophilic base is required for selective transformations in organic synthesis.
Reagent in Organic Synthesis
This compound serves as a versatile reagent in the synthesis of complex organic molecules. Its specific chemical properties enable its use in a range of synthetic methodologies within academic research and industrial chemical development.
| Molecular weight | 167.25 |
|---|---|
| Linear formula | C6H5CH2N(OH)(CH3)3 |
| Density | 1.059 g/mL at 25 °C |
| Refractive index | n20/D 1.43 |
| Concentration | 40 wt. % in H2O |




Hazard statements
- H225Highly flammable liquid and vapour
- H301Toxic if swallowed
- H314Causes severe skin burns and eye damage
- H370Causes damage to organs
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) |
|---|---|
| Flash point | 11 °C / 51.8 °F |
| Transport (UN / ADR) | UN 2924 3/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,T |
| Risk statements (R) | 11-23/24/25-34-39/23/24/25 |
| Safety statements (S) | 16-26-36/37/39-45 |
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 Benzyltrimethylammonium hydroxide solution used for?
+
Benzyltrimethylammonium hydroxide solution is used as a phase-transfer catalyst and a strong organic base in various chemical synthesis reactions, particularly in organic chemistry research and development.
What are the CAS number and formula for Benzyltrimethylammonium hydroxide solution?
+
The CAS number is 100-85-6 and the linear formula is C6H5CH2N(OH)(CH3)3.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Benzyltrimethylammonium hydroxide solution typically as a 40 wt. % in H2O solution for technical and research applications. TSS does not represent this product as USP, BP, or EP grade.
How should Benzyltrimethylammonium hydroxide solution be handled?
+
Benzyltrimethylammonium hydroxide solution is a highly flammable liquid and vapour, corrosive, and toxic. It can cause severe skin burns and eye damage, and may cause respiratory irritation and damage to organs. Handle with appropriate personal protective equipment, including gloves, eye protection, and respiratory protection, in a well-ventilated area away from ignition sources.
Is Benzyltrimethylammonium hydroxide solution controlled or scheduled?
+
Based on the provided data, there is no explicit indication of Benzyltrimethylammonium hydroxide solution being a controlled or scheduled substance.
How is Benzyltrimethylammonium hydroxide solution packed and shipped?
+
Benzyltrimethylammonium hydroxide solution is packed and shipped according to international regulations for hazardous materials, including UN 2924 for transport.
How can I request a quote or sample for Benzyltrimethylammonium hydroxide solution?
+
To request a quote or sample for Benzyltrimethylammonium hydroxide solution, please contact the TSS sales team through our website or by phone.
▶ Related products

5-Sulfosalicylic acid dihydrate
HO3SC6H3-2-(OH)CO2H 2H2O
Acids & Bases
Calcium hydroxide
Ca(OH)2
Acids & Bases
Acetic acid-12C2
12CH312CO2H
Acids & Bases
Acetic acid-13C2
13CH313CO2H
Acids & Bases
Acetic acid-13C2,d4
Acids & Bases

Acetic acid-17O2
CH3C17O2H
Acids & Bases
Acetic acid-18O2
CH3C18O2H
Acids & Bases
Acetic acid-2,2,2-d3
2-d3
Acids & Bases▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis