The Alpha-Naphtholbenzein by Dinâmica, available at LojaLab, is an organic benzein-family indicator used in acid-base titrations, particularly nonaqueous procedures that specifically require this dye. In suitable media, it provides a visible transition in the alkaline region, commonly described around pH 8.2 to 10.0, from orange or yellow tones to blue-green. Response depends on solvent, concentration, and method and must be verified before quantitative use.
Characteristics
- Organic indicator with formula C27H18O2 and molar mass 374.44 g/mol.
- Dark-red solid with a melting point of 230 to 235 °C.
- Used in acid-base titrations and nonaqueous methods that specify alpha-naphtholbenzein.
- Commonly used transition range around pH 8.2 to 10.0; Actual color and interval must be validated in the selected medium.
- Supplied in a 5 g package.
Applications
- Visual indicator for acid-base titrations in the alkaline region.
- Acid-base equilibrium, absorbance, and indicator-behavior studies in different solvents.
- Preparation of indicator solutions at the concentration and in the solvent defined by the procedure.
Technical Specifications
- CAS: 145-50-6.
- Molecular formula: C27H18O2.
- Molar mass: 374.44 g/mol.
- Appearance: dark-red solid.
- Melting point: 230 to 235 °C.
Technical Data
| Product | Alpha-Naphtholbenzein |
|---|
| Brand | Dinâmica |
|---|
| Type | Acid-base indicator |
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| CAS | 145-50-6 |
|---|
| Formula | C27H18O2 |
|---|
| Molar mass | 374.44 g/mol |
|---|
| Package | 5 g |
|---|
Frequently Asked Questions
What is Alpha-Naphtholbenzein used for?
The main applications of Alpha-Naphtholbenzein include visual indicator for acid-base titrations in the alkaline region; Acid-base equilibrium, absorbance, and indicator-behavior studies in different solvents.
What are the main characteristics of Alpha-Naphtholbenzein?
The characteristics listed for Alpha-Naphtholbenzein include organic indicator with formula C27H18O2 and molar mass 374.44 g/mol; Dark-red solid with a melting point of 230 to 235 °C.
How should Alpha-Naphtholbenzein be selected for a laboratory application?
Selection of Alpha-Naphtholbenzein should consider the grade, presentation, method requirements, and technical specifications described on this page.
What quantities of Alpha-Naphtholbenzein are available?
Alpha-Naphtholbenzein is available in 5 g. For other quantities, recurring purchases, or larger requirements, contact the sales team to check availability and request a quotation.
How can companies and institutions purchase Alpha-Naphtholbenzein and request a formal quotation?
Companies, laboratories, educational institutions, and research organizations can purchase Alpha-Naphtholbenzein directly from LojaLab. For recurring purchases, internal approval processes, research funding, public procurement, or formal quotation requirements, contact the sales team.
Professional Use and Safety Guidance
This product is intended for professional use in scientific research, laboratory analysis, education, and compatible industrial applications.
Each product has its own handling, storage, and disposal requirements. Before use, consult the corresponding SDS and follow the manufacturer's instructions and the safety procedures adopted by the institution.
LojaLab provides guidance on product selection and provenance; defining the use protocol and verifying suitability for the final application are the responsibility of the purchasing professional or institution.
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