Description

Bis(4-tert-butylphenyl)iodonium perfluoro-1-butanesulfonate (CAS No. 194999-85-4) is a highly specialized iodonium salt with the molecular formula C₂₄H₂₆F₉IO₃S. This compound features a unique combination of a bis(4-tert-butylphenyl)iodonium cation paired with a perfluoro-1-butanesulfonate anion, making it an excellent photoacid generator (PAG) for advanced photoresist applications. Its high thermal stability and strong acid generation upon UV exposure make it ideal for use in semiconductor manufacturing, lithography, and other high-performance material sciences. The compound is supplied as a high-purity crystalline solid, ensuring consistent performance in sensitive chemical processes. Store in a cool, dry place, protected from light to maintain stability.

Properties

• CAS Number: 194999-85-4
• Complexity: 646
• IUPAC Name: bis(4-tert-butylphenyl)iodonium;1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate
• InChI: InChI=1S/C20H26I.C4HF9O3S/c1-19(2,3)15-7-11-17(12-8-15)21-18-13-9-16(10-14-18)20(4,5)6;5-1(6,3(9,10)11)2(7,8)4(12,13)17(14,15)16/h7-14H,1-6H3;(H,14,15,16)/q+1;/p-1
• InChI Key: DJBAOXYQCAKLPH-UHFFFAOYSA-M
• Exact Mass: 692.05037
• Molecular Formula: C24H26F9IO3S
• Molecular Weight: 692.4
• SMILES: CC(C)(C)C1=CC=C(C=C1)[I+]C2=CC=C(C=C2)C(C)(C)C.C(C(C(F)(F)S(=O)(=O)[O-])(F)F)(C(F)(F)F)(F)F
• Topological: 65.6
• Monoisotopic Mass: 692.05037
• Synonyms: Bis(4-tert-butylphenyl)iodonium perfluoro-1-butanesulfonate, 622-652-0, 194999-85-4, BIS(4-TERT-BUTYLPHENL)IODONIUM PERFLUOR&, bis(4-tert-butylphenyl)iodanium;1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate, Bis(4-tert-butylphenyl)iodanium nonafluorobutane-1-sulfonate, SCHEMBL114859, Di(4-tert-butylphenyl)iodonium perfluorobutanesulfonate, DTXSID10584184, BCP31332, MFCD02683473, AS-86122, NS00018838, G71292, Bis(4-tert-butylphenyl)iodonium Nonafluoro-1-butanesulfonate, Bis(4-(tert-butyl)phenyl)iodonium 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate, Bis(4-tert-butylphenyl)iodonium perfluoro-1-butanesulfonate, electronic grade, >=99%

Application

Bis(4-tert-butylphenyl)iodonium perfluoro-1-butanesulfonate is primarily used as a photoacid generator (PAG) in deep-UV and extreme-UV lithography for semiconductor fabrication. Its ability to generate strong acids upon exposure to UV light makes it critical for patterning high-resolution microelectronic components. Additionally, it finds applications in advanced polymer chemistry for catalyzing cationic polymerization reactions. Researchers also utilize it in the development of novel photoresist materials due to its excellent solubility and thermal stability.

Safety and Hazards

GHS Hazard Statements

• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (100%)

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