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Sodium tetraphenylborate

Selectophore, ≥99.5%

Tetraphenylboron sodium
Linear Formula:
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Quality Level


for ion-selective electrodes

product line



≥99.5% (NT)

storage temp.


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InChI key


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General description

Sodium tetraphenylborate is categorized under the tetraalkylborate group of compounds. Visit our Sensor Applications portal to learn more.


Sodium tetraphenylborate (NaTPB) may be used as an anion discriminator in the poly(vinyl chloride) (PVC) based membrane potentiometric sensor for the determination of copper in aqueous solutions. Its addition to membranes has been proven to be beneficial towards optimizing sensing selectivity and decreasing bulk membrane impedance which result in substantial improvement of Cu2+ -selective potentiometric sensor performance. NaTBP has also been investigated as a lipophilic additive in terbium(III) membrane electrode for its potential response towards terbium(III) ions. It may be used as an aqueous derivatization reagent for organomercury prior to its determination in environmental samples by gas chromatography (GC) combined with atomic fluorescence spectrometry (AFS), microwave-induced plasma atomic emission spectrometry (AES), and mass spectrometry (MS).


Bottomless glass bottle. Contents are inside inserted fused cone.

Legal Information

Selectophore is a trademark of Sigma-Aldrich Chemie GmbH


Skull and crossbones

Signal Word


Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Certificate of Origin

Copper (II)-selective potentiometric sensors based on porphyrins in PVC matrix,.
Gupta VK, et al.
Sensors and Actuators B, Chemical, 117(1), 99-106 (2006)
Preparation of ethambutol-copper (II) complex and fabrication of PVC based membrane potentiometric sensor for copper.
Gupta VK, et al.
Talanta, 60(1), 149-160 (2003)
Construction of a novel potentiometric terbium (III) membrane sensor and its application for the determination of terbium ion in binary mixture and fluoride ion in a mouth wash preparation.
Zamani HA, et al.
Journal of the Brazilian Chemical Society, 17(7), 1297-1303 (2006)
Y Cai et al.
Journal of chromatography. A, 876(1-2), 147-155 (2000-05-24)
Several hyphenated analytical techniques, including gas chromatography (GC) coupled with atomic fluorescence spectrometry (AFS), microwave-induced plasma atomic emission spectrometry (AES), and mass spectrometry (MS), have been evaluated for methylmercury and ethylmercury analysis following aqueous derivatization with both sodium tetraethylborate and
A comparison of alkyl derivatization methods for speciation of mercury based on solid phase microextraction gas chromatography with furnace atomization plasma emission spectrometry detection.
Grinberg P, et al.
Journal of Analytical Atomic Spectrometry, 18(8), 902-909 (2003)

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