Product Information
- Acid Red 176CI 165752-(4-Nitrophenylazo)chromotropic acid disodium salt
- 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(p-nitrophenylazo)-, disodium salt
- 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-nitrophenyl)azo]-, disodium salt
- 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[2-(4-nitrophenyl)diazenyl]-, sodium salt (1:2)
- 4,5-Dihydroxy-3-(p-nitrophenylazo)-2,7-naphthalenedisulfonic acid, disodium salt
- 4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt
- Acid Red 176
- Chromotrop 2 B
- Chromotrope Red 4B
- Cr-2B
- See more synonyms
- Disodium 4,5-Dihydroxy-3-(P-Nitrophenylazo)Naphthalene-2,7-Disulphonate
- Naphtocard Fast Red 3B
- P-Nitrobenzene-Azochromotropic Acid
- Pcr 2B
- Poly-chromotrope 2B
- disodium (3E)-5-hydroxy-3-[2-(4-nitrophenyl)hydrazinylidene]-4-oxo-3,4-dihydronaphthalene-2,7-disulfonate
- p-Nitrobenzeneazochromotropic acid sodium salt
Chromotrope 2B is a water-soluble dye that is used for the detection of the presence of hydrochloric acid in urine samples. It is also used to detect the presence of biological samples in pharmaceutical preparations. The optimum concentration for this dye is 0.5% with phosphotungstic acid and 3% with human serum. Chromotrope 2B has been shown to be active when exposed to radiation, as well as having an absorption maximum at 381 nm. Chromotrope 2B reacts with plasma proteins to form a blue colored compound called chromoprotein, which can be detected by mass spectrometry.
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Chemical properties
Technical inquiry about: 3D-FC52646 Chromotrope 2B
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