Description

Phenol Blue (CAS 2150-58-5) is a high-purity organic dye with the molecular formula C₁₄H₁₄N₂O, widely utilized in research and industrial applications. Its IUPAC name, 4-[4-(dimethylamino)phenyl]iminocyclohexa-2,5-dien-1-one, reflects its unique chemical structure, featuring a conjugated system that contributes to its vivid coloration and photophysical properties. This compound is commonly recognized as a pH indicator and redox-sensitive dye, making it valuable in analytical chemistry, material science, and biological staining techniques. Phenol Blue exhibits excellent solubility in polar organic solvents, ensuring ease of handling in laboratory settings. Each batch undergoes rigorous quality control, including HPLC and spectroscopic analysis, to guarantee ≥98% purity. Suitable for spectroscopy, electrochemistry, and sensor development, this product is packaged under inert conditions to ensure long-term stability.

Properties

• CAS Number: 2150-58-5
• Complexity: 354
• IUPAC Name: 4-[4-(dimethylamino)phenyl]iminocyclohexa-2,5-dien-1-one
• InChI: InChI=1S/C14H14N2O/c1-16(2)13-7-3-11(4-8-13)15-12-5-9-14(17)10-6-12/h3-10H,1-2H3
• InChI Key: LHGMHYDJNXEEFG-UHFFFAOYSA-N
• Exact Mass: 226.110613074
• Molecular Formula: C14H14N2O
• Molecular Weight: 226.27
• SMILES: CN(C)C1=CC=C(C=C1)N=C2C=CC(=O)C=C2
• Topological: 32.7
• Monoisotopic Mass: 226.110613074
• Physical Description: Dark brown powder;
• Synonyms: Phenol Blue, N,N-Dimethylindoaniline, Indoaniline, N,N-dimethyl-, NSC 402443, 4-(p-Dimethylaminophenyl)imino-2,5-cyclohexadiene-1-one, EINECS 218-434-6, NSC 400538, BRN 2109219, 2,5-Cyclohexadien-1-one, 4-(p-dimethylaminophenyl)imino-, DTXSID0062210, 4-((4-(Dimethylamino)phenyl)imino)cyclohexa-2,5-dien-1-one, 2,5-Cyclohexadien-1-one, 4-((4-(dimethylamino)phenyl)imino)-, 2,5-Cyclohexadien-1-one, 4-[[4-(dimethylamino)phenyl]imino]-, 4-[[4-(dimethylamino)phenyl]imino]-2,5-cyclohexadien-1-one, 4-((4-(Dimethylamino)phenyl)imino)-2,5-cyclohexadien-1-one, 4-[[4-(dimethylamino)phenyl]imino]cyclohexa-2,5-dien-1-one, N,NDimethylindoaniline, Indoaniline, N,Ndimethyl, DTXCID4036489, Indoaniline, N,N-dimethyl-(8CI), 4(pDimethylaminophenyl)imino2,5cyclohexadiene1one, 2,5Cyclohexadien1one, 4(pdimethylaminophenyl)imino, 218-434-6, 2150-58-5, 4-[4-(dimethylamino)phenyl]iminocyclohexa-2,5-dien-1-one, 4-((4-(Dimethylamino)phenyl)imino)cyclohexa-2,5-dienone, NSC-400538, NSC-402443, Indoaniline,N-dimethyl-, N,N-Dimethyl-indoaniline, WLN: L6V DYJ DUNR DN1&1, 2, 4-(p-dimethylaminophenyl)imino-, 2, 4-[[4-(dimethylamino)phenyl]imino]-, 4-{[4-(dimethylamino)phenyl]azamethylene}cyclohexa-2,5-dien-1-one, N,N-Dimethylindo-aniline, P75HHB6E4Y, SCHEMBL126305, CHEMBL3276918, MFCD00001620, NSC400538, NSC402443, SBB059726, AKOS015894711, ST080692, WS-02336, N,N-Dimethylindoaniline, Dye content 97 %, NS00026887, D85657, Q2085508, 4-([4-(Dimethylamino)phenyl]imino)-2,5-cyclohexadien-1-one #

Application

Phenol Blue is primarily employed as a pH-sensitive dye in analytical chemistry due to its distinct color transition in response to protonation. Researchers utilize it in redox indicator systems for electrochemical studies, particularly in monitoring electron transfer processes. Its conjugated structure also makes it suitable for optical sensor development and photophysical research, where solvatochromic effects are investigated.

Safety and Hazards

GHS Hazard Statements

• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.