Description

Methyl Hydrogen Sulphate is an important organic sulfate ester, also known as methyl sulfate. This compound serves as a versatile reagent and intermediate in organic synthesis, valued for its role as a methylating agent and its strong acidic properties. It is primarily utilized in the chemical, pharmaceutical, and agrochemical industries for the synthesis of specialty chemicals, active pharmaceutical ingredients (APIs), and fine chemical products.

Application

• Methylating Agent in the synthesis of pharmaceuticals, dyes, and fragrances.
• Chemical Intermediate for producing other sulfate esters and specialty organic compounds.
• Catalyst or Acid Catalyst in specific esterification and condensation reactions.
• Laboratory Reagent for research and development in organic chemistry.
• Agrochemical Synthesis as a building block for certain herbicides and plant growth regulators.
• Polymer Industry as a modifier or cross-linking agent in specific polymer formulations.

Basic Information

Product Name	Methyl Hydrogen Sulphate
CAS No.	75-93-4
Molecular Formula	CH4O4S
Molecular Weight	112.11 g/mol
Synonyms	Methyl sulfate; Methylsulfuric acid; Sulfuric acid, monomethyl ester; Methoxysulfonic acid; Methyl hydrogen sulfate; Methyl sulphate; Monomethyl sulfate; Methyl acid sulfate
EINECS	200-916-3

Quality Control

Our Methyl Hydrogen Sulphate is produced and tested under stringent quality management systems to ensure batch-to-batch consistency and reliability. We provide comprehensive Certificates of Analysis (COA) for each shipment, detailing purity, assay, and impurity profiles. Our quality commitment aligns with cGMP principles where applicable, and we support compliance with global regulatory standards including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) and strong acid nature, the container must be kept tightly sealed and separated from bases and incompatible materials. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Free Sulfuric Acid	≤ 2.0%
Density (at 20°C)	~1.35 g/mL

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