Description

Sodium 3-oxo-1,2-benzisothiazole-2(3H)-propanesulphonate 1,1-dioxide (CAS No. 51099-80-0) is a high-performance sulfonate-based additive with the molecular formula C₁₀H₁₀NNaO₆S₂. This compound, also known by its IUPAC name sodium;3-(1,1,3-trioxo-1,2-benzothiazol-2-yl)propane-1-sulfonate, is a specialized electrolyte additive designed for advanced electrochemical applications. It exhibits exceptional stress-relieving properties, making it invaluable in copper foil production and other precision metal deposition processes. The product is supplied as a high-purity solid with consistent batch-to-batch quality, ensuring reliable performance in critical applications. Its unique molecular structure combines a benzisothiazole backbone with a sulfonate group, providing both flexibility enhancement and surface activity.

Properties

• CAS Number: 51099-80-0
• Complexity: 562
• IUPAC Name: sodium;3-(1,1,3-trioxo-1,2-benzothiazol-2-yl)propane-1-sulfonate
• InChI: InChI=1S/C10H11NO6S2.Na/c12-10-8-4-1-2-5-9(8)19(16,17)11(10)6-3-7-18(13,14)15;/h1-2,4-5H,3,6-7H2,(H,13,14,15);/q;+1/p-1
• InChI Key: KQESUUZXLBJROK-UHFFFAOYSA-M
• Exact Mass: 326.98472367
• Molecular Formula: C10H10NNaO6S2
• Molecular Weight: 327.3
• SMILES: C1=CC=C2C(=C1)C(=O)N(S2(=O)=O)CCCS(=O)(=O)[O-].[Na+]
• Topological: 128
• Monoisotopic Mass: 326.98472367
• Synonyms: 51099-80-0, Sodium 3-oxo-1,2-benzisothiazole-2(3H)-propanesulphonate 1,1-dioxide, EINECS 256-966-0, DTXSID40199104, DTXCID30121595, 256-966-0, sodium;3-(1,1,3-trioxo-1,2-benzothiazol-2-yl)propane-1-sulfonate, N-(3-SULFOPROPYL)-SACCHARIN, SODIUM SALT, SCHEMBL1332030, KQESUUZXLBJROK-UHFFFAOYSA-M, AKOS024353592, N-(3-sulfopropyl)-saccharin,sodiumsalt, NS00056726, ST50979746, N-(3-SULFOPROPYL)-SACCHARIN,SODIUM SALT, 3-(1,1,3-trioxo-2-hydrobenzo[d]isothiazol-2-yl)propanesulfonic acid, sodium sa lt

Application

This compound serves as a highly effective stress-relieving agent in copper foil electrolytes, where it significantly improves material flexibility while reducing brittleness. Its application in electrochemical deposition processes enhances the mechanical properties of deposited metal layers, particularly in PCB manufacturing and lithium-ion battery current collectors. The additive works by modifying the crystallization behavior at the electrode-electrolyte interface, resulting in more ductile metal deposits. Even at low concentrations (typically 0.01-0.1% by weight), it demonstrates remarkable performance in preventing crack formation and improving foil handling characteristics.

Safety and Hazards

GHS Hazard Statements

• H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
• H312 (100%): Harmful in contact with skin [Warning Acute toxicity, dermal]
• H350 (100%): May cause cancer [Danger Carcinogenicity]

Precautionary Statements

• P203, P264, P270, P280, P301+P317, P302+P352, P317, P318, P321, P330, P362+P364, P405, and P501

Hazard Classes and Categories

• Acute Tox. 4 (100%)
• Acute Tox. 4 (100%)
• Carc. 1B (100%)

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