Brilliant Yellow is a synthetic diazo dye derived from stilbene. It has the chemical formula C₂₆H₁₈N₄Na₂O₈S₂ and generally appears as an orange-colored powder or crystalline material. Its conjugated structure gives it an intense color and pronounced pH-responsive behavior. The dye changes from yellow at around pH 6.4 to orange and reddish-orange near pH 8.0 as the solution becomes more alkaline. Brilliant Yellow is also used in biological research, including enzyme activity assays and studies of glutamatergic transmission.
CAS No.: 3051-11-4
Synonyms: Direct Yellow 4, Benzo Brilliant Yellow.
| Physical Properties | |
| Chemical formula | C26H18N4Na2O8S2 |
| IUPAC Name | disodium 5-[(4-hydroxyphenyl)diazenyl]-2-[(E)-2-[4-[(4-hydroxyphenyl) diazenyl]-2-sulfonatophenyl]ethenyl]benzenesulfonate |
| Molecular weight | 624.56 g/mol |
| Solubility | Partially soluble in water |
| Density | 1.5 g/cm3 |
| Appearance | Orange to Brown powder to crystal |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | Brown |
| Physical State | Solid |
| Melting Point | >250°C |
| λmax | 488.0 to 494.0 nm |
| Odor | Odorless |
| Pictograms : |  |
| Hazard Statements : | H302: Harmful if swallowed. H315: Causes skin irritation. H319: Causes serious eye irritation. H335: May cause respiratory irritation. |
| Precautionary Statements: | P261: Avoid breathing dust/fume/gas/mist/vapours/spray. P264: Wash hands thoroughly after handling P270: Do not eat, drink or smoke when using this product. P271: Use only outdoors or in a well-ventilated area. P280: Wear protective gloves/protective clothing/eye protection/face protection. P302+P352: IF ON SKIN: Wash with plenty of soap and water. P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P330: Rinse mouth. P362+P364: Take off contaminated clothing and wash it before reuse. |
Brilliant Yellow is a synthetic diazo dye derived from stilbene. It has the chemical formula C₂₆H₁₈N₄Na₂O₈S₂ and generally appears as an orange-colored powder or crystalline material. Its conjugated structure gives it an intense color and pronounced pH-responsive behavior. The dye changes from yellow at around pH 6.4 to orange and reddish-orange near pH 8.0 as the solution becomes more alkaline. Brilliant Yellow is also used in biological research, including enzyme activity assays and studies of glutamatergic transmission.
CAS No.: 3051-11-4
Synonyms: Direct Yellow 4, Benzo Brilliant Yellow.
| Physical Properties | |
| Chemical formula | C26H18N4Na2O8S2 |
| IUPAC Name | disodium 5-[(4-hydroxyphenyl)diazenyl]-2-[(E)-2-[4-[(4-hydroxyphenyl) diazenyl]-2-sulfonatophenyl]ethenyl]benzenesulfonate |
| Molecular weight | 624.56 g/mol |
| Solubility | Partially soluble in water |
| Density | 1.5 g/cm3 |
| Appearance | Orange to Brown powder to crystal |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | Brown |
| Physical State | Solid |
| Melting Point | >250°C |
| λmax | 488.0 to 494.0 nm |
| Odor | Odorless |
| Pictograms : | |
| Hazard Statements : | H302: Harmful if swallowed. H315: Causes skin irritation. H319: Causes serious eye irritation. H335: May cause respiratory irritation. |
| Precautionary Statements: | P261: Avoid breathing dust/fume/gas/mist/vapours/spray. P264: Wash hands thoroughly after handling P270: Do not eat, drink or smoke when using this product. P271: Use only outdoors or in a well-ventilated area. P280: Wear protective gloves/protective clothing/eye protection/face protection. P302+P352: IF ON SKIN: Wash with plenty of soap and water. P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P330: Rinse mouth. P362+P364: Take off contaminated clothing and wash it before reuse. |
Brilliant Yellow is a synthetic azo dye mainly used as a pH indicator, coloring agent and research reagent in analytical and biological applications.
Brilliant Yellow has been investigated in biochemical and neuroscience research, including enzyme assays and studies of glutamatergic transmission.
