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Bis(12-crown-4) Bis(12-crown-4), Bis[(12-crown-4)methyl]-2-dodecyl-2-methylmalonate [CAS: 80403-59-4]
Item #: B021 -

Product Description The NAS11-8 glass electrode is utilized as a selective sodium ion sensor. However, it is easily spoiled by biomaterials in sample solutions. Bis(12-crown-4), a sodium ionophore, is 100 times more selective for sodium than potassium in the PVC electrode using NPOE as a plasticizer. The same selectivity for sodium over potassium is reported when Bis(12-crown-4) is used on a coated wire electrode. It can be used in either a liquid membrane or a PVC membrane. TFPB, a lipophilic...

Bis(benzo-15-crown-5) Bis(benzo-15-crown-5), Bis[(benzo-15-crown-5)-4-methyl]pimelate [CAS:69271-98-3]
Item #: B020 -

Product Description Bis(benzo-15-crown-5) is a potassium selective ionophore. Its potassium ion selectivity is almost equal to that of valinomycin, which is a wellknown neutral carrier for the potassium ion in nature. This reagent, combined with NPOE as a plasticizer, is the most recommended ionophore for potassium-selective PVC membrane electrodes. This ionophore also forms a thallium complex, so it can be used for thallium sensors. Chemical Structure Ion selectivity: LogKt(K/Na):-3.6,...

Bisthiourea-1 Bisthiourea-1, 2,7-Di-tert-butyl-9,9-dimethyl-4,5-bis(N’-n-butyl-thioureido)xanthene [CAS:187404-67-7]
Item #: B432 -

Product Description Bisthiourea-1 is a chloride-selective neutral ionophore, and it is utilized for preparation of chloride electrodes. Bisthiourea-1 forms a 1:1 complex with chloride ion. The detection limit of chloride ion using Bisthiourea-1 is (6.5+3.0) x 10-6 M.

C14-K22B5 C14-K22B5, 4,13-Bis[N-(1-adamantyl)carbamoylacetyl]-8-tetradecyl-1,7,10,16-tetraoxa-4,13-diazacyclooctadecane
Item #: C391 -

Product Description C14-K22B5 is the best magnesium selective ionophore. The PVC membrane stability is improved by this ionophore’s high lipophilicity due totetraoctadecane and adamantyl groups. C14-K22B5 has a linear response between 1x10-5 M and 0.1 M magnesium ion. Chemical Structure ...

Cesibor Cesibor, Tetrakis(4-fluorophenyl)borate, sodium salt, dihydrate [CAS: 25776-12-9]
Item #: C007 -

Product Description Cesibor is a cesium ion selective tetraphenylborate compound, and is utilized as a precipitation reagent for cesium ion. Cesibor can precipitate only cesium ion from a mixture of ammonium, potassium, and cesium ions. Chemical Structure ...

Dibenzyl-14-crown-4 Dibenzyl-14-crown-4, 6,6-Dibenzyl-1,4,8,11-tetraoxacyclotetradecane [CAS: 106868-21-7]
Item #: D043 -

Product Description Dibenzyl-14-crown-4 is 200 times more selective for lithium than for sodium or potassium. Though Dibutyl-phenanthroline is 1,000 times more selective for lithium than sodium at a controlled pH, Dibenzyl-14-crown-4 is less pH-sensitive. Selectivity: LogKpot(Li/Na): -2.5, LogKpot(Li/K): -2.3, LogKpot(Li/Cs): -1.6, LogKpot(Li/Rb): -2.2, LogKpot(Li/NH4): -3.1, LogKpot(Li/H): -3.2, LogKpot(Li/Mg): -4.3, LogKpot(Li/Ca): -4.9, LogKpot(Li/Ba): -4.7, LogKpot(Li/Sr): -4.3...

HDOPP-Ca HDOPP-Ca, Bis(4-n-octylphenyl)phosphate, calcium salt
Item #: H003 -

Product Description HDOPP-Ca is a liquid cation exchanger for use in the calcium ion selective electrode. HDOPP is the most suitable compound among the dialkyl phosphate derivatives, and is used in either a liquid membrane or a PVC membrane using DOPP (dioctylphenylphosphate calcium salt) as a plasticizer. Chemical Structure ...

HFPB HFPB, Tetrakis[3,5-bis(1,1,1,3,3,3-hexafluoro-2-methoxy-2-propyl)phenyl]borate, sodium salt, trihydrate [CAS: 120945-63-3]
Item #: H209 -

Product Description Highly lipophilic tetraphenylborate (HFPB) is a very stable anion in a wide pH range. It is used as a cation phase transfer reagent. Vitamin B12 electrode in which HFPB was used as an ion site detects 10-7 M level of vitamin B12 with linear response. Chemical Structure ...

Kalibor Kalibor, Tetraphenylborate, sodium salt [CAS: 143-66-8]
Item #: K003 -

Product Description Kalibor is utilized for gravimetric analyses of K+, Rb+, Cs+, NH4+, amine compounds, alkaloids, onium compounds, and other monovalent ions, such as Ag(I), Cu(I) and Tl(I). Chemical Structure ...

TD19C6 TD19C6, 2,6,13,16,23,26-Hexaoxaheptacyclo[25.4.4.47,12.417,22.01,17.07,12.017,22]tritetracontane
Item #: T402 -

Product Description TD19C6 is an ammonium ion selective ionophore. It is difficult to separate ammonium ion and potassium ion because they are close in ion size. The selectivity of TD19C6 for ammonium ion is about 10 times that of potassium ion, which is nearly the same selectivity of nonactin. ...

TFPB TFPB, Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate, sodium salt, dihydrate [CAS: 79060-88-1]
Item #: T037 -

Product Description Tetraphenylborate is unstable in acidic conditions because protons attack the ipso-carbon of the phenyl group and benzene is released. However, the electron density of the ipso-carbon of TFPB is low due to a trifluoromethyl group. Thus TFPB is stable in acidic conditions (such as 50 mM sulfuric acid solution). TFPB is used in Friedel-Craft alkylation or diazo coupling reactions as a phase transfer reagent. It is also used for ion selective electrodes. TFPB is known as...