23868-34-0

Basic information

• Product Name: TETRABUTYLAMMONIUM HYDROGEN DIFLUORIDE
• Synonyms: TBABF;TETRABUTYLAMMONIUM HYDROGEN DIFLUORIDE;TETRABUTYLAMMONIUM DIFLUORIDE;TETRABUTYLAMMONIUM BIFLUORIDE;TETRA-N-BUTYLAMMONIUM BIFLUORIDE;tetrabutylammonium hydrogen difluoride sol;Tetrabutylammonium hydrogen difluoride solution;TETRABUTYLAMMONIUM HYDROGEN DIFLUORIDE S OL, 50% IN METH.CHL
• CAS NO: 23868-34-0
• Molecular Formula: C₁₆H₃₆N*F₂H
• Molecular Weight: 281.47
• Product Categories: Ammonium Polyhalides, etc. (Quaternary);Fluorinating Reagents;Fluorinating Reagents & Building Blocks for Fluorinated Biochemical Compounds;Fluorination;Halogenation;Nucleophilic Fluorinating Reagents;Quaternary Ammonium Compounds;Synthetic Organic Chemistry
• Mol File: 23868-34-0.mol
• Article Data: 2

Chemical Properties

• Flash Point: <10℃
• Appearance: /
• Refractive Index: n20/D 1.442
• Storage Temp.: 2-8°C
• BRN: 4729304
• CAS DataBase Reference: TETRABUTYLAMMONIUM HYDROGEN DIFLUORIDE(CAS DataBase Reference)
• NIST Chemistry Reference: TETRABUTYLAMMONIUM HYDROGEN DIFLUORIDE(23868-34-0)
• EPA Substance Registry System: TETRABUTYLAMMONIUM HYDROGEN DIFLUORIDE(23868-34-0)

Safety Data

• Hazard Codes: C,F
• Statements: 34-40-20/21/22-11
• Safety Statements: 26-36/37/39-45-16
• RIDADR: UN 2924 3/PG 2
• WGK Germany: 3
• HazardClass: 8
• PackingGroup: III
• Hazardous Substances Data: 23868-34-0(Hazardous Substances Data)

Usage

Uses

Different sources of media describe the Uses of 23868-34-0 differently. You can refer to the following data:
1. Tetrabutylammonium hydrogen difluoride is used as an etchant for silica films 1 Reactant for: Nucleophilic fluorination 2 Ring-opening fluorination reaction 3 Substitution reactions 4
2. Used as an etchant for silica filmsReactant for:Nucleophilic fluorinationRing-opening fluorination reactionSubstitution reactions

InChI:InChI=1/C16H36N.2FH/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;;/h5-16H2,1-4H3;2*1H/q+1;;/p-1

Upstream product

• 268212-48-2 3-amino-5-(5-phenyl-1H-pyrrol-2-yl)-1H-pyrazole-4-carboxamide 
• 429-41-4 tetrabutyl ammonium fluoride 
• 26735-53-5 iodobenzene difluoride 

Downstream Products

• 912292-08-1 tetrabutylammonium pentafluorophenyltrifluoroborate 
• 912292-09-2 tetrabutylammonium bis(pentafluorophenyl)difluoroborate 

Relevant articles and documents

A highly selective fluorescent sensor for fluoride anion based on pyrazole derivative: Naked eye "no-yes" detection

A new pyrazole-based fluorescent sensor, 5-amino-3-(5-phenyl-1H-pyrrol-2- yl)-1H-pyrazole-4-carboxamide (compound 1), was studied for fluoride anion (F-) detection in organic or water-containing solution. This compound displayed both changes in UV-vis absorption and fluorescence emission spectra upon addition of F-. With increasing of F-, blue emission intensity increases drastically and reaches saturation with 607-fold enhancement at 424 nm. The results indicate that compound 1 has highly selectivity for fluoride detection over other anions, such as Cl-, Br-, I-, HSO4-, H2PO4 - and AcO- in DMSO or aqueous DMSO solutions. 1H NMR titration and other experiments confirm that the sensing process is mainly from the deprotonation of the pyrazole-NH in compound 1.