Methanedisulphonic Acid CAS 503-40-2

1. Acts Methanedisulphonic acid CAS 503-40-2 as a strong acid catalyst for organic synthesis reactions (esterification, alkylation, condensation) with high selectivity and low corrosion.
2. Serves Methanedisulphonic acid as an electrolyte additive for lithium-ion batteries to improve ionic conductivity and cycle stability of electrode materials.
3. Functions as a plating bath additive for electroplating of metals (nickel, copper) to enhance coating uniformity and adhesion.

Store Methanedisulphonic acid CAS 503-40-2 at 5–25℃ in sealed PTFE-lined drums in a cool, dry, well-ventilated area, away from moisture, strong bases, and oxidants. Wear nitrile gloves, face shield, and acid-resistant apron; avoid skin/eye contact and inhalation of fumes (corrosive). Reseal tightly post-use to prevent hygroscopic absorption; dispose of waste via licensed chemical channels.

✅ Delivers Methanedisulphonic acid strong acidity (pKa₁≈-1.2) comparable to sulfuric acid but with lower volatility and reduced environmental impact.
✅ Excellent Methanedisulphonic acid CAS 503-40-2 solubility in polar solvents enables homogeneous catalysis without phase separation in aqueous and organic reaction systems.
✅ High thermal stability (decomposes >250℃) ensures long service life in high-temperature industrial processes and battery applications.

- Hazard Class:8 (Corrosive Substances)|UN:$\boldsymbol{3265}$|HS Code:2904100090
- Corrosive solid/liquid|Decomposes on heating to release sulfur oxides and toxic fumes
- Hazard Statements:H314 (Causes severe skin burns and eye damage), H335 (May cause respiratory irritation)
- Precaution Statements:P260, P264, P280, P301+330+331, P303+361+353, P304+340, P310