Description

Sulphur Trioxide-Trimethylamine Complex, 95 CAS NO 17736-86-6 is a versatile and powerful sulfonating and sulfating agent, offering a stable, solid alternative to volatile and hazardous sulfur trioxide gas. This complex is critical for introducing the sulfonate (-SO3) group into organic molecules, a key step in manufacturing surfactants, dyes, and pharmaceuticals. It is an essential reagent for chemical synthesis and process development in industries ranging from specialty chemicals to agrochemicals.

Application

• Sulfonation/Sulfation Agent: Primary reagent for the controlled sulfonation of aromatic compounds and sulfation of alcohols to produce anionic surfactants (e.g., Linear Alkylbenzene Sulfonates - LABS).
• Specialty Chemical Synthesis: Key intermediate in the production of dyes, pigments, and optical brighteners.
• Pharmaceutical Intermediates: Used in the synthesis of sulfonamide drugs and other active pharmaceutical ingredients (APIs) requiring sulfonate groups.
• Agrochemical Production: Manufacture of sulfonated herbicides, pesticides, and plant growth regulators.
• Polymer Modification: Sulfonation of polymers to alter properties like hydrophilicity, dyeability, or conductivity.
• Laboratory Research: A safer, more manageable source of SO3 for method development and small-scale organic synthesis in R&D settings.

Basic Information

Product Name	Sulphur Trioxide-Trimethylamine Complex
CAS No.	17736-86-6
Molecular Formula	C3H9NO3S or (CH3)3N·SO3
Molecular Weight	139.17 g/mol
Synonyms	Trimethylamine sulfur trioxide complex; Trimethylamine-SO3 adduct; Sulfur trioxide trimethylamine complex; TMA-SO3; SO3-TMA; Trimethylaminosulfurtrioxide; 1,1,1-Trimethylamine N-oxide sulfur trioxide adduct; Sulfur trioxide-trimethylamine
EINECS	241-739-6

Quality Control

Our Sulphur Trioxide-Trimethylamine Complex is manufactured under strict quality management systems. Each batch is analyzed to ensure it meets the high-purity standards required for industrial and laboratory applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Store away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Melting Point	Approx. 160-165 °C (dec.)

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