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Indicators

pH indicators for easy qualitative pH measurements and reaction analysis. Ample coverage of a wide range of pH values.

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products per page. 553 products on this category.

BrandProduct dataPurityPrice rangeEstimated delivery
TCI logo
Basic Orange 14
REF: 3B-A0132CAS: 10127-02-3 		- - -45.00 €Fri 30 Sep 22
TCI logo
Chlorophenol Red
REF: 3B-C0245CAS: 4430-20-0 		>93.0%(HPLC)29.00 €~75.00 €Fri 30 Sep 22
TCI logo
Dithizone
REF: 3B-D0949CAS: 60-10-6 		>85.0%(E)81.00 €Fri 30 Sep 22
TCI logo
Methyl Red - Methylene Blue Solution [Mixed Indicator for Neutralization Titration]
REF: 3B-M0161		- - -34.00 €~91.00 €Fri 30 Sep 22
TCI logo
Bromothymol Blue Sodium Salt
REF: 3B-S0044CAS: 34722-90-2 		- - -66.00 €~235.00 €Fri 30 Sep 22
TCI logo
o-Cresolphthalein
REF: 3B-C0404CAS: 596-27-0 		- - -48.00 €~119.00 €Fri 30 Sep 22
TCI logo
2-Nitrophenol Sodium Salt
REF: 3B-N0222CAS: 824-39-5 		>99.0%(T)(HPLC)38.00 €~290.00 €Fri 30 Sep 22
TCI logo
Methyl Red (0.1% in ca. 95% Ethanol) [for Titration]
REF: 3B-M0067CAS: 493-52-7 		- - -43.00 €~90.00 €Fri 30 Sep 22
TCI logo
Rhodamine 6G
REF: 3B-R0039CAS: 989-38-8 		- - -35.00 €Fri 30 Sep 22
TCI logo
Congo Red
REF: 3B-C0550CAS: 573-58-0 		>98.0%(HPLC)103.00 €Fri 30 Sep 22
TCI logo
Methyl Red
REF: 3B-M0421CAS: 493-52-7 		>98.0%(HPLC)20.00 €~58.00 €Fri 30 Sep 22
TCI logo
8-Anilino-1-naphthalenesulfonic Acid Magnesium(II) Salt
REF: 3B-A0484CAS: 18108-68-4 		>99.0%(HPLC)105.00 €Fri 30 Sep 22
TCI logo
Methyl Orange (0.1% in Water) [for Titration]
REF: 3B-M0017CAS: 547-58-0 		- - -41.00 €Fri 30 Sep 22
TCI logo
Cresol Red Sodium Salt
REF: 3B-S0046CAS: 62625-29-0 		- - -29.00 €~177.00 €Fri 30 Sep 22
TCI logo
N,N'-Diphenylbenzidine
REF: 3B-D0878CAS: 531-91-9 		>98.0%(HPLC)(N)65.00 €~183.00 €Fri 30 Sep 22
TCI logo
Variamine Blue B Base [Redox Indicator]
REF: 3B-M0493CAS: 101-64-4 		>98.0%(T)20.00 €~131.00 €Fri 30 Sep 22
TCI logo
Yoshimulactone Green (YLG)
REF: 3B-E1238CAS: 1807549-00-3 		>98.0%(HPLC)20.00 €~78.00 €Fri 30 Sep 22
TCI logo
ANS-Mg (=Magnesium(II) 8-Anilino-1-naphthalenesulfonate) [Hydrophobic fluorescent probe]
REF: 3B-A5353CAS: 18108-68-4 		>98.0%(T)(HPLC)44.00 €Fri 30 Sep 22
TCI logo
4-Ethoxychrysoidine Hydrochloride
REF: 3B-E0054CAS: 2313-87-3 		>95.0%(T)40.00 €~412.00 €Fri 30 Sep 22
TCI logo
TAN [=1-(2-Thiazolylazo)-2-naphthol] [Spectrophotometric reagent for transition metals]
REF: 3B-A5003CAS: 1147-56-4 		>99.0%(T)73.00 €~261.00 €Fri 30 Sep 22
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Basic Orange 14
TCI logo
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Basic Orange 14

CAS:10127-02-3
Formula:
C17H20ClN3·ZnCl2
Color and Shape:
Dark red to Brown powder to crystal
Molecular weight:
438.10

Ref: 3B-A0132

Estimated delivery in United States, on Friday 30 Sep 2022
+ info
discount label
Chlorophenol Red
TCI logo
+ info

Chlorophenol Red

CAS:4430-20-0
Formula:
C19H12Cl2O5S
Purity:
>93.0%(HPLC)
Color and Shape:
Light yellow to Brown powder to crystal
Molecular weight:
423.26

Ref: 3B-C0245

Estimated delivery in United States, on Friday 30 Sep 2022
+ info
discount label
Dithizone
TCI logo
+ info

Dithizone

Controlled Product
CAS:60-10-6
Formula:
C13H12N4S
Purity:
>85.0%(E)
Color and Shape:
Red to Dark blue to Black powder to crystal
Molecular weight:
256.33

Ref: 3B-D0949

Estimated delivery in United States, on Friday 30 Sep 2022
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No image
TCI logo
+ info

Methyl Red - Methylene Blue Solution [Mixed Indicator for Neutralization Titration]

Color and Shape:
Green to Dark green clear liquid to cloudy liquid

Ref: 3B-M0161

Estimated delivery in United States, on Friday 30 Sep 2022
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Bromothymol Blue Sodium Salt
TCI logo
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Bromothymol Blue Sodium Salt

CAS:34722-90-2
Formula:
C27H27Br2NaO5S
Color and Shape:
Orange to Brown powder to crystal
Molecular weight:
646.37

Ref: 3B-S0044

Estimated delivery in United States, on Friday 30 Sep 2022
+ info
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o-Cresolphthalein
TCI logo
+ info

o-Cresolphthalein

CAS:596-27-0
Formula:
C22H18O4
Color and Shape:
White to Light yellow to Light orange powder to crystal
Molecular weight:
346.38

Ref: 3B-C0404

Estimated delivery in United States, on Friday 30 Sep 2022
+ info
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2-Nitrophenol Sodium Salt
TCI logo
+ info

2-Nitrophenol Sodium Salt

CAS:824-39-5
Formula:
C6H4NNaO3
Purity:
>99.0%(T)(HPLC)
Color and Shape:
Orange to Red powder to crystal
Molecular weight:
161.09

Ref: 3B-N0222

Estimated delivery in United States, on Friday 30 Sep 2022
+ info
discount label
Methyl Red (0.1% in ca. 95% Ethanol) [for Titration]
TCI logo
+ info

Methyl Red (0.1% in ca. 95% Ethanol) [for Titration]

CAS:493-52-7
Formula:
C15H15N3O2
Color and Shape:
Red clear liquid
Molecular weight:
269.30

Ref: 3B-M0067

Estimated delivery in United States, on Friday 30 Sep 2022
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Rhodamine 6G
TCI logo
+ info

Rhodamine 6G

CAS:989-38-8
Formula:
C28H31ClN2O3
Color and Shape:
Amber to Brown to Dark green powder to crystal
Molecular weight:
479.02

Ref: 3B-R0039

Estimated delivery in United States, on Friday 30 Sep 2022
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Congo Red
TCI logo
+ info

Congo Red

CAS:573-58-0
Formula:
C32H22N6Na2O6S2
Purity:
>98.0%(HPLC)
Color and Shape:
Dark red to Brown powder to crystal
Molecular weight:
696.66

Ref: 3B-C0550

Estimated delivery in United States, on Friday 30 Sep 2022
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Methyl Red
TCI logo
+ info

Methyl Red

CAS:493-52-7
Formula:
C15H15N3O2
Purity:
>98.0%(HPLC)
Color and Shape:
Orange to Brown to Dark purple powder to crystal
Molecular weight:
269.30

Ref: 3B-M0421

Estimated delivery in United States, on Friday 30 Sep 2022
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8-Anilino-1-naphthalenesulfonic Acid Magnesium(II) Salt
TCI logo
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8-Anilino-1-naphthalenesulfonic Acid Magnesium(II) Salt

CAS:18108-68-4
Formula:
C32H24MgN2O6S2
Purity:
>99.0%(HPLC)
Color and Shape:
Green to Dark green powder to crystal
Molecular weight:
620.98

Ref: 3B-A0484

Estimated delivery in United States, on Friday 30 Sep 2022
+ info
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Methyl Orange (0.1% in Water) [for Titration]
TCI logo
+ info

Methyl Orange (0.1% in Water) [for Titration]

CAS:547-58-0
Formula:
C14H14N3NaO3S
Color and Shape:
Orange to Brown to Dark red clear liquid
Molecular weight:
327.33

Ref: 3B-M0017

Estimated delivery in United States, on Friday 30 Sep 2022
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Cresol Red Sodium Salt
TCI logo
+ info

Cresol Red Sodium Salt

CAS:62625-29-0
Formula:
C21H17NaO5S
Color and Shape:
Dark red to Brown powder to crystal
Molecular weight:
404.41

Ref: 3B-S0046

Estimated delivery in United States, on Friday 30 Sep 2022
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N,N'-Diphenylbenzidine
TCI logo
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N,N'-Diphenylbenzidine

CAS:531-91-9
Formula:
C24H20N2
Purity:
>98.0%(HPLC)(N)
Color and Shape:
White to Gray to Brown powder to crystal
Molecular weight:
336.44

Ref: 3B-D0878

Estimated delivery in United States, on Friday 30 Sep 2022
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Variamine Blue B Base [Redox Indicator]
TCI logo
+ info

Variamine Blue B Base [Redox Indicator]

CAS:101-64-4
Formula:
C13H14N2O
Purity:
>98.0%(T)
Color and Shape:
Gray to Dark blue to Black powder to crystal
Molecular weight:
214.27

Ref: 3B-M0493

Estimated delivery in United States, on Friday 30 Sep 2022
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Yoshimulactone Green (YLG)
TCI logo
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Yoshimulactone Green (YLG)

CAS:1807549-00-3
Formula:
C27H20O7
Purity:
>98.0%(HPLC)
Color and Shape:
Light yellow to Brown powder to crystal
Molecular weight:
456.45

Ref: 3B-E1238

Estimated delivery in United States, on Friday 30 Sep 2022
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ANS-Mg (=Magnesium(II) 8-Anilino-1-naphthalenesulfonate) [Hydrophobic fluorescent probe]
TCI logo
+ info

ANS-Mg (=Magnesium(II) 8-Anilino-1-naphthalenesulfonate) [Hydrophobic fluorescent probe]

CAS:18108-68-4
Formula:
C32H24MgN2O6S2
Purity:
>98.0%(T)(HPLC)
Color and Shape:
Light yellow to Amber to Dark green powder to crystal
Molecular weight:
620.98

Ref: 3B-A5353

Estimated delivery in United States, on Friday 30 Sep 2022
+ info
discount label
4-Ethoxychrysoidine Hydrochloride
TCI logo
+ info

4-Ethoxychrysoidine Hydrochloride

CAS:2313-87-3
Formula:
C14H16N4O·HCl
Purity:
>95.0%(T)
Color and Shape:
Dark green to Dark red to Black powder to crystal
Molecular weight:
292.77

Ref: 3B-E0054

Estimated delivery in United States, on Friday 30 Sep 2022
+ info
discount label
TAN [=1-(2-Thiazolylazo)-2-naphthol] [Spectrophotometric reagent for transition metals]
TCI logo
+ info

TAN [=1-(2-Thiazolylazo)-2-naphthol] [Spectrophotometric reagent for transition metals]

CAS:1147-56-4
Formula:
C13H9N3OS
Purity:
>99.0%(T)
Color and Shape:
Orange to Brown powder to crystal
Molecular weight:
255.30

Ref: 3B-A5003

Estimated delivery in United States, on Friday 30 Sep 2022
+ info
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