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Acid-base indicator

Acid-base indicators are substances that change color in response to variations in the pH of a solution. They play a crucial role in chemistry and biology. Litmus, phenolphthalein, and bromothymol blue are well-known examples. In acidic conditions, indicators exhibit one color, and in basic conditions, they display another. This color shift helps scientists and researchers determine the pH of a solution and track chemical reactions.

Products of Acid-base indicator
CAS No.Product NameMolecular Formula
1141-59-94-(2-Pyridinylazo)resorcinolC11H9N3O2
122965-43-9Methylene BlueC16H18ClN3S
125-20-2ThymolphthaleinC28H30O4
1324-76-1Pigment Blue 61C37H29N3O3S
1340-02-9Methyl Purple
135-52-4ZinconC20H16N4O6S
1393-92-6Litmus
145-50-6p-NaphtholbenzeinC27H18O2
1668-00-4Arsenazo IIIC22H18As2N4O14S2
1738-02-93,6-Bis(o-sulphophenylazo)-4,5-dihydroxynaphthalene-2,7-disulphonic acidC22H16N4O14S4
1755-51-7Pentamethoxy RedC24H26O6
2243-76-7Mordant Orange 1C13H9N3O5
2303-01-7Cresol PurpleC21H18O5S
2313-87-34-[2-(4-Ethoxyphenyl)Diazenyl]-1,3-Benzenediamine Hydrochloride (1:1)C14H17ClN4O
329-71-52,5-DinitrophenolC6H4N2O5
33869-21-5LacmoidC24H16N2O6
36402-77-4Benzyl OrangeC19H16N3NaO3S
366-18-72,2'-DipyridylC10H8N2
3952-78-1Alizarin Fluorine BlueC19H15NO8
42249-61-6LACMOID
4430-20-0Chlorophenol RedC19H12Cl2O5S
4430-25-5Tetrabromophenol BlueC19H6Br8O5S
458-37-7CurcuminC21H20O6
493-52-7Methyl RedC15H15N3O2
5144-89-81,10-Phenanthroline hydrateC12H8N2.H2O
518-51-4Phenolphthalein Disodium SaltC20H12Na2O4
523-42-2CyanineC29H35IN2
531-91-9N,N'-DiphenylbenzidineC24H20N2
554-84-73-NitrophenolC6H5NO3
573-56-82,6-DinitrophenolC6H4N2O5
5833-18-1Bis(2,4-Dinitrophenyl)Acetic Acid Ethyl EsterC16H12N4O10
584-42-9Mordant Yellow 1C13H8N3NaO5
596-01-0alpha-NaphtholphthaleinC28H18O4
596-27-0o-CresolphthaleinC22H18O4
6010-91-9Alloxan TetrahydrateC4H10N2O8
603-45-2Rosolic acidC19H14O3
604-59-17,8-BenzoflavoneC19H12O2
62625-30-3Bromocresol Purple sodium saltC21H15Br2NaO5S
62625-31-4sodium 4-[3-(4-hydroxy-2-methyl-phenyl)-1,1-dioxo-benzo[c][1,2]oxathiol-3-yl]-3-methyl-phenolateC21H17NaO5S
62637-91-6Tetrabromophenolphthalein ethyl ester potassium saltC22H13Br4O4.K
66-71-71,10-PhenanthrolineC12H8N2
68412-29-3Starch Hydrolyzed
824-39-5Sodium 2-nitrophenoxideC6H4NNaO3
845-10-3Methyl Red sodium saltC15H14N3NaO2
88-74-42-NitroanilineC6H6N2O2
88-75-52-NitrophenolC6H5NO3
9010-71-3zinc iodide-StarchSolutions
97130-83-1Methylene blueC16H18ClN3S
99-35-41,3,5-TrinitrobenzeneC6H3N3O6


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