Rose Bengal belongs to the class of organic compounds called xanthenes. It is a dark green powder that produces an intense violet aqueous solution. Further, known for its complex photochemistry and can be used to generate singlet oxygen, which is involved in various chemical reactions.
CAS No.: 632-69-9
Synonyms: Rose Bengal sodium salt; Xantryl; Food Red No. 105, sodium salt; PV 10; C.I. Acid Red 94; Rosa Bengala; Rosa del Bengala; Rose Bengale
| Physical Properties | |
| Chemical formula | C20H4Cl4I4O5 |
| IUPAC Name | dipotassium;2,3,4,5-tetrachloro-6-(2,4,5,7-tetraiodo-3-oxido-6-oxoxanthen-9-yl)benzoate |
| Molecular weight | 973.67 g/mol |
| Solubility | Water, Ethanol, DMF, DMSO |
| Flash point | 412.1±32.9°C |
| Density | 2.9±0.1 g/cm³ |
| Chemical Properties | |
| Color | Bright Red/Dark violet |
| State | Solid powder |
| Melting point | >300°C |
| Vapour Pressure | 0.0±2.7 mmHg at 25°C |
| λmax | 548 nm |
| LogP | 9.26 |
| Pictograms : |    |
| Hazard Statements : | H225: Highly flammable liquid and vapourH301+H311: Toxic if swallowed or in contact with skinH370: Causes damage to organsH318: Causes serious eye damage |
| Precautionary statements : | P301+P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.P210: Keep away from heat, hot surfaces, sparks, open flames, and other ignition sources. No smoking.P280: Wear protective gloves/protective clothing/eye protection/face protection.P304+P312: IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell.P352: Wash with plenty of water. |
Rose Bengal belongs to the class of organic compounds called xanthenes. It is a dark green powder that produces an intense violet aqueous solution. Further, known for its complex photochemistry and can be used to generate singlet oxygen, which is involved in various chemical reactions.
CAS No.: 632-69-9
Synonyms: Rose Bengal sodium salt; Xantryl; Food Red No. 105, sodium salt; PV 10; C.I. Acid Red 94; Rosa Bengala; Rosa del Bengala; Rose Bengale
| Physical Properties | |
| Chemical formula | C20H4Cl4I4O5 |
| IUPAC Name | dipotassium;2,3,4,5-tetrachloro-6-(2,4,5,7-tetraiodo-3-oxido-6-oxoxanthen-9-yl)benzoate |
| Molecular weight | 973.67 g/mol |
| Solubility | Water, Ethanol, DMF, DMSO |
| Flash point | 412.1±32.9°C |
| Density | 2.9±0.1 g/cm³ |
| Chemical Properties | |
| Color | Bright Red/Dark violet |
| State | Solid powder |
| Melting point | >300°C |
| Vapour Pressure | 0.0±2.7 mmHg at 25°C |
| λmax | 548 nm |
| LogP | 9.26 |
| Pictograms : | |
| Hazard Statements : | H225: Highly flammable liquid and vapourH301+H311: Toxic if swallowed or in contact with skinH370: Causes damage to organsH318: Causes serious eye damage |
| Precautionary statements : | P301+P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.P210: Keep away from heat, hot surfaces, sparks, open flames, and other ignition sources. No smoking.P280: Wear protective gloves/protective clothing/eye protection/face protection.P304+P312: IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell.P352: Wash with plenty of water. |
The Rose Bengal test is a diagnostic test used to detect Brucella antibodies in serum. It works by mixing the serum with Rose Bengal dye; if antibodies are present, the mixture clumps together, indicating a positive result. This test is commonly used to diagnose brucellosis in humans and animals.
Rose Bengal is used to suppress bacterial growth, selectively isolate fungi in agar, and as a stain to differentiate living and dead microorganisms.
The normal range for the Rose Bengal test is up to 25 IU/mL. A negative result within this range indicates no agglutination, while a positive result, showing agglutination, suggests the presence of Brucella antibodies, potentially indicating infection.
Rose Bengal strips are used to diagnose damage to the eye’s conjunctiva and corneal cells, often in assessing dry eye and other ocular surface conditions. They are also utilized in microbiological testing to distinguish between living and dead microorganisms.
The Rose Bengal indicator is a dye used to assess pH changes in various chemical processes. It shifts color based on the acidity or alkalinity of the solution, helping to visually monitor pH levels.
