Description

Tetra-n-Dodecylammonium Iodide is a quaternary ammonium salt featuring four linear dodecyl (C12) alkyl chains bound to a central nitrogen atom with an iodide counterion. It serves as a highly effective phase-transfer catalyst and cationic surfactant in demanding synthetic and nanomaterial applications where strong lipophilicity, thermal stability, and interfacial activity are required. This compound is essential for researchers and manufacturers in advanced materials synthesis, nanoparticle functionalization, and specialty catalysis — particularly where conventional quats lack sufficient hydrophobic bulk or halide exchange efficiency. Tetra-n-Dodecylammonium Iodide CAS NO 40797-39-5 is widely specified for high-performance R&D and pilot-scale production across global chemical and materials science laboratories.

Application

• Phase-transfer catalysis in nucleophilic substitution reactions (e.g., Finkelstein, cyanide, azide transfers)
• Surface modification and stabilization of metal nanoparticles (Au, Ag, Pd) during colloidal synthesis
• Template agent in the preparation of mesoporous silica and organosilica hybrid materials
• Cationic dopant in conductive polymer formulations (e.g., PEDOT:PSS enhancement)
• Ion-pairing reagent for LC-MS analysis of acidic analytes
• Electrolyte additive in solid-state and quasi-solid-state dye-sensitized solar cells (DSSCs)
• Hydrophobic ion source in ion-selective membrane development
• Reagent for controlled release systems requiring sustained cationic charge delivery

Basic Information

Product Name	Tetra-n-Dodecylammonium Iodide
CAS No.	40797-39-5
Molecular Formula	C48H96IN
Molecular Weight	822.18 g/mol
Synonyms	Tetradodecylammonium iodide; Tetra-n-dodecylammonium iodide; TDDAI; n-Tetradecylammonium iodide (incorrect common misnomer – corrected to dodecyl); Dodecyltrimethylammonium iodide (distinct compound – excluded); Tetradodecylammonium iodide (IUPAC preferred); Quaternary ammonium iodide C12×4; N,N,N-Trimethyl-1-dodecanaminium iodide (inaccurate – omitted); Tetraalkylammonium iodide (generic class term); 40797-39-5 (CAS registry number)
EINECS	254-998-1

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request. All batches are verified for identity (IR, NMR), assay (HPLC), and impurity profile (residual solvents, heavy metals, inorganic iodides). Manufacturing adheres to ISO 9001-certified processes, and documentation supports REACH compliance and safe handling per GHS guidelines.

Storage

Preserve in a tightly closed container, protected from light. Store at room temperature (15–25°C) in a dry, well-ventilated area. Due to its hygroscopic nature, minimize exposure to ambient humidity; use desiccated storage conditions when possible. Avoid prolonged contact with stainless steel or aluminum surfaces under humid conditions.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Assay (by HPLC)	≥ 98.5%
Loss on drying	≤ 1.0% (at 105°C, 2 hrs)
Residue on ignition	≤ 0.1%
Heavy metals (as Pb)	≤ 10 ppm
Chloride (Cl⁻)	≤ 50 ppm
Bromide (Br⁻)	≤ 50 ppm
Identification (IR)	Conforms to reference spectrum
Identification (NMR)	Conforms to reference 1H and 13C spectra

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.