Description

Dimethyl Sulfate is a highly reactive and versatile methylating agent widely used in organic synthesis. Its primary commercial value lies in its ability to efficiently transfer methyl groups to oxygen, nitrogen, and sulfur atoms, making it a critical intermediate for numerous industrial processes. This compound is essential for manufacturers in the pharmaceutical, agrochemical, dye, and specialty chemical sectors seeking reliable and effective methylation solutions.

Application

• Pharmaceutical Intermediate: Key reagent for the methylation of amines, phenols, and thiols in the synthesis of active pharmaceutical ingredients (APIs).
• Agrochemical Production: Used in the manufacture of herbicides, pesticides, and fungicides as a methylating agent for heterocyclic compounds.
• Dye and Pigment Synthesis: Employed in the production of methylated intermediates for various colorants and specialty dyes.
• Quaternization Agent: Facilitates the production of quaternary ammonium compounds used as surfactants, disinfectants, and phase-transfer catalysts.
• Perfume and Flavor Industry: Used in the methylation of specific aromatic compounds to create synthetic fragrance and flavor ingredients.
• Laboratory Research: Serves as a potent methylating reagent in academic and industrial R&D for novel compound synthesis.

Basic Information

Product Name	Dimethyl Sulfate
CAS No.	77-78-1
Molecular Formula	C2H6O4S
Molecular Weight	126.13 g/mol
Synonyms	Dimethyl monosulfate; Sulfuric Acid Dimethyl Ester; Methyl Sulfate; DMS; Methylsulfuric Acid Ester; Dimethyl Ester of Sulfuric Acid; Methyl Sulfate (VAN)
EINECS	201-058-1

Quality Control

Our Dimethyl Sulfate is manufactured under strict process controls to ensure high purity and batch-to-batch consistency. Quality is verified through comprehensive analytical testing, including gas chromatography (GC) for assay and impurity profiling. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile and hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed. Recommended storage temperature is 15-25°C. Keep away from strong bases, amines, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0 %
Water Content (KF)	≤ 0.1 %
Acidity (as H2SO4)	≤ 0.1 %
Specific Gravity (20/20°C)	1.328 - 1.332
Refractive Index (nD20)	1.386 - 1.389

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