Among organic analytical reagents while chelating reagents are effective only for metallic ions (cations), Ion Association reagents which we introduce here form an ion-pair (ion association) through its interaction of negatively charged association reagents toward cations and those of positively charged association reagents toward anions, respectively.
This ion association, when the concentration rate is considerably high in the aqueous solution, precipitates allowing for use in a weight analysis and precipitation titration. On the other hand, when the concentration rate is low (<10^-5M), the ion association is extracted by an organic solvent allowing the determination of trace components by measuring through absorption spectrochemical analysis or atomic spectrophotometry analysis. Accordingly, its application extends over considerably wide ranges.
TCI-Ace Ion Association reagents have strictly been selected capable of coping with cases where highly sensitive analysis is required.

A5133	A5106	A5160
A5161	A5104	A5101
A5100	A5402	A5400
A5105	A5401	A5132
A5103	A5102	A5131
A5130	A5107

A5133	2-Aminoperimidine Hydrobromide [Precipitation reagent for SO4]
A5106	Basic Green 1 [Ion association reagent for spectrophotometric analysis]
A5160	Benzyldimethyltetradecylammonium Chloride Hydrate [Ion association reagent for extraction photometric analysis and sensitizer in photometric determination of metals]
A5161	CPC Monohydrate (=Cetylpyridinium Chloride Monohydrate) [Ion association reagent for extraction photometric analysis and sensitizer in photometric determination of metals]
A5104	Crystal Violet [Ion association reagent for spectrophotometric analysis]
A5101	Ethyl Violet [Sensitive spectrophotometric reagent for anionic surfactans]
A5100	Malachite Green, Oxalate [Sensitive spectrophotometric reagent for PO4]
A5402	MANPAP [=1-Methyl-4-[4-(4-aminonaphthylazo)phenylazo]pyridinium Iodide] [Spectrophotometric reagent for anionic surfactants]
A5400	MDEPAP [=1-Methyl-4-(4-diethylaminophenylazo)pyridinium Iodide] [Extraction-spectrophotometric reagent for anionic surfactants.]
A5105	Methylene Blue [Ion association reagent for spectrophotometric analysis]
A5401	NDEPAP [=1-(4-Nitrobenzyl)-4-(4-diethylaminophenylazo)pyridinium Bromide] [Extraction-spectrophotometric reagent for anionic surfactants]
A5132	Potassium Tetrakis(4-chlorophenyl)borate [Anion for the neutral carrier type ion electrode]
A5103	Rhodamine 6G [Ion association reagent for photometric and fluorimetric analysis]
A5102	Rhodamine B [Ion association reagent for photometric and fluorimetric analysis]
A5131	Sodium Tetrakis(4-fluorophenyl)borate Hydrate [Precipitation reagent for Cs and titrimetric reagent for nonionic surfactants]
A5130	Sodium Tetraphenylborate [Precipitation reagent for K]
A5107	TBPE (=Tetrabromophenolphthalein Ethyl Ester Potassium Salt) [Sensitive spectrophotometric reagent for amines, quaternary ammonium salts and other cations]