Comprehensive Guide to Dimethyl Sulfoxide CAS 72 63 9 Properties and Applications

09 February, 2026

Understanding CAS 72-63-9: A Comprehensive Guide

CAS 72-63-9 refers to Dimethyl Sulfoxide (DMSO), a versatile organosulfur compound with a wide array of industrial and scientific applications.  Its unique properties – acting as both a polar aprotic solvent and a cryoprotectant – make it invaluable in pharmaceutical development, chemical synthesis, and even agricultural applications.  This article will explore the properties, uses, safety considerations, and sourcing of DMSO, particularly for businesses involved in global trade and chemical procurement.  Understanding the nuances of this compound is crucial for companies navigating international regulations and ensuring product quality.

cas 72 63 9

Key Properties of Dimethyl Sulfoxide (CAS 72-63-9)

DMSO is a colorless liquid with a slightly garlic-like odor. It’s highly miscible with water, alcohols, and many organic solvents, making it a powerful solvent for diverse chemical reactions.  Its high boiling point (189°C) and low vapor pressure enhance its safety profile compared to more volatile solvents.  Crucially, DMSO readily penetrates skin, which is a key consideration in its applications, but also necessitates strict safety protocols.  Its ability to dissolve both polar and non-polar compounds is unparalleled, making it essential in research and development.

Key Highlights: Highly miscible with water and organic solvents, high boiling point, low vapor pressure, and excellent solvency for both polar and non-polar substances.

Applications of DMSO (CAS 72-63-9) Across Industries

The applications of DMSO are remarkably diverse. In the pharmaceutical industry, it’s used as a solvent for drug delivery systems, enhancing drug permeability. It’s also a cryoprotectant, preserving cells and tissues during freezing.  In chemical synthesis, DMSO serves as a reaction medium for various organic reactions. Agriculture utilizes it as a foliar spray to enhance pesticide absorption.  Moreover, it’s finding increasing use in cleaning and stripping applications in the electronics industry.  Businesses seeking reliable supply of high-quality DMSO benefit from trusted suppliers who understand industry specific needs.

Industry Applications:

• Pharmaceutical Formulation

• Chemical Synthesis

• Cryopreservation of Biological Samples

• Agricultural Pesticide Delivery

• Electronics Cleaning

DMSO (CAS 72-63-9): Grades and Specifications

DMSO is available in various grades depending on the intended application.  These typically include:  Technical Grade (suitable for industrial applications), Pharmaceutical Grade (meeting stringent purity standards for drug formulations), and ACS Reagent Grade (conforming to American Chemical Society specifications for laboratory use).  Choosing the appropriate grade is critical to ensure product efficacy and safety.  Here’s a comparison table outlining common specifications:

SpecificationTechnical GradePharmaceutical GradeACS Reagent Grade
Purity (%)≥99.0≥99.9≥99.95
Water Content (%)≤0.5≤0.1≤0.05
Color (APHA)≤50≤10≤5
Residue on Ignition (%)≤0.1≤0.05≤0.01

Safety Considerations When Handling DMSO (CAS 72-63-9)

Due to its rapid skin penetration, DMSO can carry dissolved substances with it, potentially increasing their absorption into the body.  Therefore, protective gloves (nitrile or neoprene) are essential when handling DMSO. Eye protection (safety glasses or goggles) and appropriate ventilation are also crucial.  Avoid prolonged skin contact and inhalation of vapors.  Refer to the Safety Data Sheet (SDS) for comprehensive safety information and handling procedures. Proper storage in a cool, dry place away from incompatible materials is also vital. Sourcing from a reliable supplier like HQTech Tirz guarantees quality and adherence to safety standards.

cas 72 63 9

Sourcing DMSO (CAS 72-63-9) for Global Trade

When procuring DMSO for international trade, several factors are critical. Ensure the supplier can provide a Certificate of Analysis (CoA) verifying product purity and specifications. Confirm compliance with relevant regulations, including REACH (Europe) and TSCA (United States).  Reliable packaging and transportation are also essential to prevent contamination and ensure product integrity. HQTech Tirz offers comprehensive support for international procurement, including documentation and logistical solutions.

Conclusion:  A Versatile Chemical with Global Applications

Dimethyl Sulfoxide (DMSO), identified by CAS 72-63-9, is a highly versatile chemical with a wide spectrum of industrial and scientific applications.  Selecting the appropriate grade, adhering to safety protocols, and sourcing from a reputable supplier are crucial for successful implementation. HQTech Tirz is committed to providing high-quality DMSO and comprehensive support for businesses operating in the global marketplace.

Frequently Asked Questions (FAQs)

What are the main safety precautions to take when handling DMSO?

Due to DMSO's ability to rapidly penetrate the skin, it’s crucial to wear appropriate personal protective equipment (PPE). This includes nitrile or neoprene gloves, safety glasses or goggles, and a lab coat.  Avoid contact with skin and eyes. Work in a well-ventilated area to minimize inhalation of vapors. Always consult the Safety Data Sheet (SDS) for detailed safety information.  Be aware that DMSO can carry other chemicals through the skin, so avoid handling potentially hazardous substances without proper protection. It is also important to wash hands thoroughly after handling DMSO, even if gloves were worn.

What is the shelf life of DMSO?

When stored properly, DMSO has a long shelf life. It is generally stable for several years if kept in a tightly sealed container, protected from light, and stored in a cool, dry place. However, it's important to inspect the product for any signs of degradation, such as discoloration or the formation of precipitates, before each use.  Follow the manufacturer's recommendations on the Certificate of Analysis (CoA) for specific storage and shelf life information.  Proper storage helps maintain its purity and effectiveness.

Can DMSO be used as a solvent for all types of chemical reactions?

While DMSO is a highly versatile solvent, it is not suitable for all chemical reactions. It can react with strong oxidizing agents and strong acids. Also, its high polarity can sometimes interfere with certain reactions.  It’s important to consider the compatibility of DMSO with the specific reactants and conditions of the reaction.  Always consult chemical compatibility charts and conduct small-scale tests before using DMSO in large-scale reactions.

What is the role of REACH and TSCA in sourcing DMSO?

REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) is a European Union regulation that governs the use of chemicals. TSCA (Toxic Substances Control Act) is a similar regulation in the United States. When sourcing DMSO, it’s crucial to ensure that the supplier is compliant with both REACH and TSCA. This ensures the product meets environmental and safety standards and can be legally imported and used in these regions. A reputable supplier will provide documentation confirming their compliance with these regulations.

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