Description

Cetyltrimethylammonium Dihydrogen Phosphate is a quaternary ammonium phosphate salt that serves as a versatile cationic surfactant and phase-transfer catalyst. This compound is valued for its unique combination of a long hydrophobic alkyl chain and a phosphate counterion, which provides specific solubility and reactivity profiles. It is primarily utilized in advanced material synthesis, pharmaceutical intermediates, and as a specialty additive in formulations requiring controlled surface activity. The product is identified by CAS number 111412-68-1.

Application

• Phase-Transfer Catalyst (PTC) in organic synthesis for alkylation, esterification, and other two-phase reactions.
• Surfactant and Emulsifier in specialty formulations for coatings, inks, and polymer emulsions.
• Pharmaceutical Intermediate in the synthesis of antimicrobial agents and other active pharmaceutical ingredients (APIs).
• Nanomaterial Synthesis as a structure-directing agent or templating agent for mesoporous materials.
• Biocide and Preservative component in industrial and institutional cleaning products.
• Corrosion Inhibitor additive in metalworking fluids and industrial water treatment systems.
• Analytical Chemistry as an ion-pairing agent in chromatographic separations.
• Textile Auxiliary for fabric softeners and dye-leveling agents.

Basic Information

Product Name	Cetyltrimethylammonium Dihydrogen Phosphate
CAS No.	111412-68-1
Molecular Formula	C19H44NO4P
Molecular Weight	381.53 g/mol
Synonyms	CTMA Dihydrogen Phosphate; Cetyltrimethylammonium Phosphate; Hexadecyltrimethylammonium Dihydrogen Phosphate; N,N,N-Trimethyl-1-hexadecanaminium Dihydrogen Phosphate; Cetrimonium Phosphate; CTAP; Cetyl Trimethyl Ammonium Phosphate; 1-Hexadecanaminium, N,N,N-trimethyl-, phosphate (1:1)
EINECS	Contact for details

Quality Control

Our Cetyltrimethylammonium Dihydrogen Phosphate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as assay, moisture content, and residual solvents. Our quality commitment supports applications in research, pharmaceutical development, and high-performance industrial formulations.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking or decomposition. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines
pH (1% Solution)	3.0 - 5.0

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