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| Product Name | Neutral Red Solution, 4% w/v in Water |
| Catalog No. | RERE-0300 |
| Description | Concentrated aqueous neutral red stock at 4 percent w/v, at the dye's full solubility limit in water, based on compound of CAS 553-24-2 with formula C15H17ClN4 and molecular weight 288.78. Beyond biological staining, neutral red serves as a pH indicator transitioning from red at pH 6.8 to yellow at pH 8.0, a reagent for water, nitrite and urine alkalinity testing, a Nissl body stain for neural tissue and a photometric reagent for iodide. The maximum absorbance in 50 percent ethanol is 553 nm. Store at room temperature; shelf life is 12 months. |
| Intended Use | Concentrated stock for biological staining, pH indication and photometric iodide determination |
| Principle / Technology | Neutral red acts both as a weak cationic biological stain and as an acid-base indicator with a red to yellow transition between pH 6.8 and 8.0 |
| Specificity | 4 percent w/v in water; CAS 553-24-2; formula C15H17ClN4; MW 288.78; absorbance maximum 553 nm in 50 percent ethanol; 12 month shelf life |
| Reaction Conditions / Protocol | Dilute to the strength the staining or indication protocol requires and apply as directed |
| Storage Conditions | Room temperature |
| Package Specifications | 500 mL |
| Key Features | Saturated aqueous strength for flexible dilution; dual role as stain and indicator; 12 month shelf life |
For research use only, not for clinical use.
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