Description

Hexamethylphosphoramide (CAS NO 680-31-9) is a highly polar, aprotic organophosphorus solvent with exceptional solvating power. Its unique chemical properties make it a critical component in advanced synthesis and material science applications. This compound is essential for industries requiring a powerful, non-nucleophilic base and solvent for demanding reactions, including specialty polymer manufacturing and high-performance lithium battery electrolyte formulation.

Application

• Polymer Chemistry: Acts as a solvent and catalyst in the production of high-performance polymers like aramids (e.g., Kevlar®-type fibers) and polyimides.
• Lithium Battery Electrolytes: Used as a co-solvent or additive in electrolyte formulations to enhance ionic conductivity and battery stability at high voltages.
• Organic Synthesis: Serves as a powerful, non-nucleophilic base and solvent for demanding reactions such as deprotonations, eliminations, and anionic polymerizations.
• Gas Absorption: Employed as a selective solvent for scrubbing acidic gases like carbon dioxide and hydrogen sulfide from industrial gas streams.
• Chemical Intermediate: Utilized in the synthesis of specialized phosphorous-containing compounds and other fine chemicals.
• Spectroscopy & Analysis: Functions as a solvent for NMR spectroscopy due to its ability to dissolve a wide range of organic and inorganic compounds.

Basic Information

Product Name	Hexamethylphosphoramide
CAS No.	680-31-9
Molecular Formula	C6H18N3OP
Molecular Weight	179.20 g/mol
Synonyms	HMPA; HMPT; Hexamethylphosphoric Triamide; Tris(dimethylamino)phosphine Oxide; Phosphoric Tris(dimethylamide); Hexametapol; ENT 50882
EINECS	211-653-8

Quality Control

Our Hexamethylphosphoramide is manufactured under stringent quality management systems. Each batch is subjected to comprehensive analytical testing, including assay by GC or HPLC, water content determination (Karl Fischer), and impurity profiling, to ensure it meets the high-purity standards required for advanced chemical synthesis and electronic applications. A detailed Certificate of Analysis (COA) is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its properties as a strong base/organic solvent, keep away from strong acids, oxidizing agents, and moisture. Containers should be kept tightly sealed when not in use to prevent absorption of water and carbon dioxide from the atmosphere.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
Water Content (KF)	≤ 0.1%
Density (20°C)	1.027 - 1.033 g/mL
Refractive Index (n20D)	1.457 - 1.461

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