The Dimidium Bromide by Dinâmica, available at LojaLab, is a cationic dye used in mixed indicators for determination of anionic-active matter in detergents and surfactants. In the classical two-phase procedure, it is combined with an anionic dye such as acid blue 1, and the change in color distribution between aqueous and organic phases indicates the titration endpoint.
Characteristics
- Cationic dye with formula C20H18BrN3, molar mass approximately 380.28 g/mol and CAS 518-67-2
- Chemical synonym: 3,8-diamino-5-methyl-6-phenylphenanthridinium bromide
- Used as the cationic component of indicators for surfactant testing
- Applicable to two-phase titration of anionic-active matter in specific methods
- Response depends on indicator ratio, solvent, shaking and phase separation
Applications
- Determination of anionic-active matter in detergents by two-phase titration
- Preparation of mixed indicator with an anionic dye according to a standardized method
- Quality control of formulations containing anionic surfactants
- Studies of ion-pair partition between aqueous and organic phases
- Development and verification of surfactant methods.
Technical Specifications
- Product: Dimidium Bromide
- Brand: Dinâmica
- CAS: 518-67-2
- Molecular formula: C20H18BrN3
- Molar mass: approximately 380.28 g/mol
- Class: cationic phenanthridinium dye
- Physical state: solid
- Pack size: 1 g.
Technical Data
| Analytical function | Cationic component of a mixed indicator |
| Primary test | Two-phase titration of anionic-active matter |
| Typical system | Aqueous and organic phases with a standardized cationic titrant |
| Critical variables | Indicator composition, solvent, shaking, settling and color reading |
| Key interference | Cationic surfactants may invalidate the method application |
Frequently Asked Questions
What is Dimidium Bromide used for?
The main applications of Dimidium Bromide include determination of anionic-active matter in detergents by two-phase titration; preparation of mixed indicator with an anionic dye according to a standardized method.
What are the main characteristics of Dimidium Bromide?
The characteristics listed for Dimidium Bromide include cationic dye with formula C20H18BrN3, molar mass approximately 380.28 g/mol and CAS 518-67-2; chemical synonym: 3,8-diamino-5-methyl-6-phenylphenanthridinium bromide.
How should Dimidium Bromide be selected for a laboratory application?
Selection of Dimidium Bromide should consider the grade, presentation, method requirements, and technical specifications described on this page.
What quantities of Dimidium Bromide are available?
Dimidium Bromide is available in 1 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 Dimidium Bromide and request a formal quotation?
Companies, laboratories, educational institutions, and research organizations can purchase Dimidium Bromide 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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