
Evans Blue is an azo dye, a synthetic compound that is a broad-spectrum dye used for biological staining, for studies of vascular permeability, and for biomedical research. It has a high affinity for serum albumin and has been used in the study of blood circulation, plasma volume, and blood vessel leakage. It is used to create a significant blue coloration in tissues where there is some leakage from the vasculature and is used in neuroscience and histology, cardiovascular research, and drug delivery studies.

CAS No. : 314-13-6
Synonyms: T-1824, Direct Blue 53, Evans Blue Dye
| Physical Properties | |
| Chemical formula | C34H24N6Na4O14S4 |
| IUPAC Name | Tetrasodium(6E)-4-amino-6-[[4-[4-[(2E)-2-(8-amino-1-oxo-5,7-disulfonatonaphthalen-2-ylidene)hydrazinyl] -3-methylphenyl]-2-methylphenyl]hydrazinylidene]-5-oxonaphthalene-1,3-disulfonate |
| Molecular weight | 960.8 g/mol |
| Solubility | Soluble in water (10–50 mg/mL at 25 °C) |
| Appearance | Solid (Powder) |
| Chemical Properties | |
| Color | Dark Brown to Black |
| Physical State at 20 °C | Solid |
| Stability | Generally stable at room temperature |
| Charge | Anionic (negatively charged) |
| Exact Mass | 959.9824113Â Da |
Histology and Biomedical Research
Fluorescence Imaging Applications
Neuroscience & Blood-Brain Barrier Research
Vascular Permeability & Cardiovascular Research
Muscle & Tissue Damage Studies
Pulmonary & Inflammation Studies
| Pictograms : |
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| Hazard Statements : | H350 – May cause cancer. H301 – Toxic if swallowed. |
| Precautionary statements : | P264 – Wash skin thoroughly after handling. P270 – Do not eat, drink or smoke when using this product. P273 – Avoid release to the environment. P301 + P312 – IF SWALLOWED – Call a POISON CENTER or doctor/ physician if you feel unwell. P330 – Rinse mouth. P391 – Collect spillage. P501 – Dispose of contents/ container to an approved waste disposal plant. Â Â |
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Evans Blue is an azo dye, a synthetic compound that is a broad-spectrum dye used for biological staining, for studies of vascular permeability, and for biomedical research. It has a high affinity for serum albumin and has been used in the study of blood circulation, plasma volume, and blood vessel leakage. It is used to create a significant blue coloration in tissues where there is some leakage from the vasculature and is used in neuroscience and histology, cardiovascular research, and drug delivery studies.

CAS No. : 314-13-6
Synonyms: T-1824, Direct Blue 53, Evans Blue Dye
| Physical Properties | |
| Chemical formula | C34H24N6Na4O14S4 |
| IUPAC Name | Tetrasodium(6E)-4-amino-6-[[4-[4-[(2E)-2-(8-amino-1-oxo-5,7-disulfonatonaphthalen-2-ylidene)hydrazinyl] -3-methylphenyl]-2-methylphenyl]hydrazinylidene]-5-oxonaphthalene-1,3-disulfonate |
| Molecular weight | 960.8 g/mol |
| Solubility | Soluble in water (10–50 mg/mL at 25 °C) |
| Appearance | Solid (Powder) |
| Chemical Properties | |
| Color | Dark Brown to Black |
| Physical State at 20 °C | Solid |
| Stability | Generally stable at room temperature |
| Charge | Anionic (negatively charged) |
| Exact Mass | 959.9824113Â Da |
Histology and Biomedical Research
Fluorescence Imaging Applications
Neuroscience & Blood-Brain Barrier Research
Vascular Permeability & Cardiovascular Research
Muscle & Tissue Damage Studies
Pulmonary & Inflammation Studies
| Pictograms : |
|
| Hazard Statements : | H350 – May cause cancer. H301 – Toxic if swallowed. |
| Precautionary statements : | P264 – Wash skin thoroughly after handling. P270 – Do not eat, drink or smoke when using this product. P273 – Avoid release to the environment. P301 + P312 – IF SWALLOWED – Call a POISON CENTER or doctor/ physician if you feel unwell. P330 – Rinse mouth. P391 – Collect spillage. P501 – Dispose of contents/ container to an approved waste disposal plant. Â Â |
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Evans Blue, a synthetic azo dye, is a widely used dye in biological research and is employed as a vascular tracer.
Evans Blue is used in biomedical research to study vascular permeability, plasma volume, tissue damage, and blood-brain barrier integrity.
Evans Blue cannot cross an intact Blood–brain barrier. Leakage into brain tissue indicates barrier disruption.
Evans Blue can be toxic at high concentration and should be used in a laboratory with the necessary safety precautions.
Evans Blue is bound to albumin in the blood. Damage to or leakiness in the blood vessels causes leakage of the dye-albumin complex into tissues, which can then be examined to assess vascular leakage and endothelial integrity.
Evans Blue is used in studies of the integrity of the blood brain barrier, vascular leakage, the function of the lymphatic system, the study of tumors, tissue perfusion analysis, and cardiovascular investigations.