Methane Sulfonic Acid Suppliers, Dealers in Mumbai, India

Methane Sulfonic Acid – A Versatile Acid Catalyst

Methane Sulfonic Acid

Methane Sulfonic Acid (MSA) is an all-rounder, high purity & liquid acid. It is renowned for its exceptional solubility, thermal stability and low corrosivity compared to traditional strong acids. With a molecular formula CH₃SO₃H as well as CAS Number 75 75 2, MSA finds applications across industries like electroplating, organic synthesis, pharmaceuticals as well as polymerization. Its non oxidizing nature, biodegradability & also high conductivity make it a preferred acid in environmentally conscious processes.

What Is Methane Sulfonic Acid?

Methane Sulfonic Acid (MSA) is also renowned as methanesulfonic acid or mesyl acid. It is a strong & organic sulfonic acid characterized by unparalleled solubility in water as well as polar organic solvents. Unlike mineral acids such as sulfuric or hydrochloric acid, MSA is non-oxidizing. This discards hazards related to oxidation as well as corruption of sensitive substrates.

Chemically, its structure consists of a single methyl group (–CH₃) linked to a sulfonic acid moiety (–SO₃H). This configuration leads to strong acidity (pKa ≈ 1.9), comparable to sulfuric acid, but with e handling properties. MSA exhibits high thermal stability (up to about 200 °C) as well as low vapor pressure. This reduces the risk of fumes & also inhalation hazards.

Key properties involve excellent electrical conductivity. This makes it highly desirable as an electrolyte in electroplating as well as batteries. Its full miscibility with water & also attraction to cationic species also supports applications in polymerization catalysis as well as descaling. Environmentally, MSA is biodegradable & also does not generate sulfate ions. It reduces downstream ecological impact when compared to counterparts.

Industrially, MSA is typically delivered as ≥ 99 % pure liquid. Produced via sulfoxidation or electrochemical routes. Modern manufacturing guarantees low trace metal content as well as minimized impurities. Consequently, MSA has become a standard in pharmaceutical esterification, high end metal finishing, and green chemistry protocols.

Product Description Table

Property Specification / Value
CAS Number 75-75-2
Chemical Name Methane Sulfonic Acid (CH₃SO₃H)
Molecular Formula CH4O3S
Appearance Colorless to light yellow liquid
Purity >≥ 99.0 % by GC
Molecular Weight 96.10 g/mol
Acidity (pKa) ≈ –1.9
Density 1.48 g/cm³ (at 20 °C)
Boiling Point Decomposes before boiling (~230 °C)
Water Solubility Miscible
Viscosity ~15 cP at 20 °C
Conductivity High Ionic Conductivity
Thermal Stability Stable up to ~200 °C
Toxicity / Lethal Dose LD₅₀ (oral, rat): ~1,800 mg/kg

Technical Specifications

Shakti Chemicals Methane Sulfonic Acid is manufactured according to stringent ISO/QC protocols. Typical test parameters are:

Assay: 98.5–100.0 %

Water Content: ≤0.5 % (Karl Fischer)

Chloride: ≤10 ppm

Iron (Fe): ≤1 ppm

Sulfate: ≤20 ppm

Heavy Metals (Pb, Cd, Hg, As): ≤1 ppm cumulative

Organic Impurities: Single impurity ≤0.2 %

Color: ≤Y20 (APHA)

All analyses are documented with Certificates of Analysis upon supply.

Methane Sulfonic Acid

Handling and Storage

Storage Conditions: Store in a cool, dry as well as well ventilated area. Recommended storage temperature is 5–25 °C. Keep containers tightly closed & also away from moisture, incompatible materials (strong oxidants, alkaline agents) & sunlight.

Materials for Containers: Compatible with 316L stainless steel, PTFE, PVDF, HDPE, glass-lined steel, or carbon steel lined with appropriate coatings. Plastics like PP, PVC are acceptable. Avoid aluminum, zinc, copper.

Personal Protective Equipment (PPE): Use acid-resistant gloves (nitrile, neoprene), splash goggles/full face shield, apron/lab coat, and closed-toe chemical-resistant footwear.

Spill Response: Neutralize small spills with sodium bicarbonate or lime, absorb with inert media (vermiculite), and dispose of hazardous waste. Large spills require diking and recovery by trained personnel.

Health Hazards: Corrosive to skin, eyes, and mucous membranes. Vapors may cause respiratory irritation. First-aid measures: flush eyes/skin with water for 15 min, remove contaminated clothing, seek medical attention. If inhaled, move to fresh air; if ingested, do not induce vomiting—seek immediate medical attention.

Fire/Explosion Hazards: Non-flammable and non-oxidizing; in containers, overheating may lead to rupture. Use extinguishing media for adjacent fuel fires (foam, CO₂, dry chemical). No special firefighting procedures needed specifically due to MSA.

Structure of Methane Sulfonic Acid

The molecular structure can be represented as:

CH4O3S

In chemical descriptor terms:

SMILES: CS(=O)(=O)O

InChI: InChI=1S/CH4O3S/c1-5(2,3)4/h5H,1H3

The central sulfur atom adopts a tetrahedral geometry. It is double-bonded to two oxygen atoms, single-bonded to a hydroxyl (–OH), and one methyl group (–CH₃). The acid proton is associated with the sulfonate OH group. The complete delocalization across the sulfonate moiety accounts for its strong acidity and thermal resilience.

Why Choose Shakti Chemicals?

Global Supply Network – As reputed suppliers, exporter, traders, dealers, importers, and distributors, Shakti Chemicals ensures reliable, large-scale shipping to industrial hubs worldwide.

Stringent Quality Control – Every lot is validated through in-house and third-party laboratories. Detailed Certificates of Analysis accompany every shipment.

Competitive Pricing – Vertical integration in sourcing and manufacturing allows Shakti Chemicals to offer highly competitive prices versus typical MSA suppliers.

Technical & Regulatory Support – Expert chemists provide application guidance, regulatory documentation (e.g. REACH, SDS, transport certificates), and troubleshooting advice.

Flexible Packaging – Available in drums, IBCs, bulk tankers, and custom pack sizes (25 kg to >20 MT).

Sustainability Practices – Eco-friendly manufacturing routes, low-waste policy, and green chemistry compliance.

After-sales Service – <.b>Dedicated account managers, technical know-how support, and swift logistics coordination.

Product Pack Size

Shakti Chemicals offers MSA in various pack sizes in Mumbai, India to suit industrial and laboratory needs:

25 kg HDPE drum

200 kg HDPE or steel drum (UN-approved)

1,000 kg IBC (HDPE within steel cage)

Bulk tanker (>10 metric tonne via food-grade rubber lined tanker for compatible grades)

Custom packaging upon request (5 kg, 10 kg lab bottles, EX-proof containers, etc.)

All packaging is clearly labeled with product name, batch number, net/gross weight, manufacture/expiry date, hazard pictograms, handling instructions, and compatibility certifications.

Applications of Methane Sulfonic Acid

Electroplating & Surface Finishing

Metal plating baths (Ni, Cu, Zn, Au, Ag) using MSA minimize stress cracking and suppress pitting.

High ionic conductivity improves throwing power and deposit uniformity.

Pharmaceutical/Chemical Synthesis

Catalyzes esterifications, acetalizations, and ketalizations. MSA offers milder, environmentally benign alternatives to mineral acids.

Used in chiral resolving reagent preparations and novel APIs.

Polymerization & Resin Production

Efficient catalyst for phenolic, epoxy, and polyester resins.

Produces polymers with high molecular weight and superior physical properties, without sulfate contamination.

Descaling & Metal Cleaning

Removes oxides and scale from stainless steel and titanium surfaces.

Safer and environmentally preferred versus hydrochloric or sulfuric alternatives.

Battery Electrolytes

Investigated as proton conductors in flow batteries and fuel cells; it blends well with water and organic solvents.

Analytical Reagent

Employed in chromatography, ti

trations, and sample preparations requiring strong yet non-oxidizing acid conditions.

Corrosion Inhibitor Additive

When combined with corrosion inhibitors, MSA formulates powerful acid cleaners for boiler and heat-exchanger maintenance.

Miscellaneous Applications

Electronics plating, biodiesel production (transesterification), waxes & lubricants neutralization, leather tanning, textile treatments.

Frequently Asked Questions

1. Q: How does MSA compare to sulfuric acid?

A: MSA matches strong acidity (pKa ≈ –1.9 vs sulfuric –3), but is non-oxidizing, less corrosive, fully biodegradable, and doesn’t release sulfur dioxide fumes.

2. Q: What is MSA’s shelf life?

A: Stable for ~24 months under recommended storage (sealed, <25 °C). Kr values may exceed this after 2 years.

3. Q: Can MSA be diluted with water?

A: Yes—MSA is completely miscible with water. When diluting, always pour acid into water slowly with stirring and cooling to dissipate heat.

4. Q: Which containers are suitable?

A: 316L stainless steel, PTFE, PVDF, HDPE, or glass-lined vessels. Avoid aluminum, copper, or zinc due to corrosion.

5. Q: Is MSA biodegradable?

A: Yes, it readily breaks down in wastewater treatment facilities—an eco-friendly alternative to inorganic acids.

6. Q: Is MSA dangerous?

A: It is corrosive to skin, eyes, and respiratory system. Use proper PPE, handle in ventilated areas, and follow SDS guidelines.

7. Q: Do MSA baths need additives?

A: Yes—for ideal metal plating outcomes, brighteners or leveling agents are often added, depending on the metal.

8. Q: Does MSA contaminate products with sulfate?

A: No—unlike sulfuric acid, MSA leaves no sulfate residues, preventing unwanted salt formation.

9. Q: Can it be used in organic synthesis requiring strong acid?

A: Absolutely—it is a popular catalyst for esterification, acetal formation, and polymerization in fine/technical chemistry.

10. Q: What grades are available?

A: Analytical (>99.9 %), technical (>98.5 %), industrial (≥99 %), and electroplating-spec (trace metal-free) grades.


Methane Sulfonic Acid is a high-performance, eco-friendlier alternative to traditional mineral acids. With excellent solubility, strong acidity, low volatility, and non-oxidizing nature, MSA has become essential in diverse industries—from electroplating and pharmaceuticals to polymers and energy. Shakti Chemicals, as trusted suppliers, traders, dealers, importers, and distributors, delivers superior-grade MSA backed by consistent quality, comprehensive technical support, and global logistics in Maharashtra. Whether for R&D or large-scale manufacturing, Methane Sulfonic Acid offers a powerful, sustainable solution—and Shakti Chemicals ensures it arrives safely and cost-effectively to your facilities.

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