Methanesulfonic Acid
Methanesulfonic Acid (MSA, CAS 75-75-2), min. 99%, supplied wholesale by Zyntex. Strong non-oxidizing acid for tin electroplating, esterification catalysis, pharmaceutical mesylate salts and biodegradable descalers. CoA and SDS.
Description
Methanesulfonic Acid Product Overview
Methanesulfonic acid (CH3SO3H) is a clear, colorless, viscous liquid with a density of about 1.48 g/cm³ that mixes completely with water and alcohol. It is a strong acid, similar to sulfuric acid in strength, but it is not oxidizing and its salts are very soluble.
Electronics producers use MSA-based baths for tin and tin–lead plating of components, because they give fine deposits and are easier to treat than fluoroborate baths. Similarly, chemists use it as a catalyst for esterification and alkylation, and pharmaceutical companies use it to make mesylate salts of APIs. Cleaning product producers also use it in readily biodegradable descalers.
Furthermore, related sulfur chemicals in our range include Methanesulfonyl Chloride, which converts to MSA on hydrolysis, and Dimethyl Disulfide.
Key Applications of Methanesulfonic Acid
Typical uses include, for example:
⚡ Electroplating
Base for tin as well as tin–lead baths.
⚗️ Catalysis
Catalyst for esterification as well as alkylation.
💊 Pharmaceutical Salts
Acid for mesylate salts.
🧽 Descalers
Biodegradable acid for cleaners.
Methanesulfonic Acid Technical Specifications
| Parameter | Standard Value |
|---|---|
| Product Name | Methanesulfonic Acid |
| CAS Number | 75-75-2 |
| Molecular Formula / Weight | CH3SO3H / 96.11 g/mol |
| Assay / Purity | Min 99.0% (Anhydrous Basis) |
| Density | 1.48 g/cm³ at 20°C |
| Documents | CoA as well as SDS with every lot |
⚠️ Safety & Handling: Causes severe skin burns and eye damage and may be corrosive to metals. Avoid contact and also wear chemical-resistant gloves, face protection and protective clothing. Store in tightly closed, acid-resistant containers, away from bases and oxidizers. Always consult the Safety Data Sheet (SDS), because it contains the full classification and handling instructions.
Frequently Asked Questions
Why is MSA preferred in tin plating?
Because its salts are very soluble and it is not oxidizing, MSA baths give fine tin deposits and are easier to treat than older fluoroborate baths.
Is methanesulfonic acid biodegradable?
Yes. It is readily biodegradable, so it suits environmentally friendly descalers.
How can I get a price and documents?
Prices depend on quantity, packaging and destination, so please contact us with your required volume. We then send a quotation together with the CoA and SDS.
