The Phenol Red ACS Reagent by Dinâmica, available at LojaLab, is an acid-base indicator from the sulfonphthalein family. Its color changes according to the equilibrium between protonated and deprotonated forms, allowing pH changes near the neutral range to be monitored. It is used to prepare indicator solutions, formulate media specifying phenol red and perform colorimetric acidity and alkalinity monitoring assays.
Characteristics
- Acid-base indicator also known as phenolsulfonphthalein
- Typical visual transition from yellow in more acidic media to red or pink in more alkaline media
- Common transition range near pH 6.8 to 8.2, dependent on concentration and matrix
- Bright-red to dark-red solid with a Minimum assay: 95%
- Low direct water solubility, requiring preparation according to the formulation or method.
Applications
- Preparation of indicator solutions for titrations and pH evaluations within the appropriate transition range
- Indicator component in cell-culture or microbiological media specifying phenol red
- Visual monitoring of acidification or alkalinization in compatible experimental systems
- Colorimetric assays and instructional demonstrations of acid-base equilibria.
Technical Specifications
- Product: Phenol Red ACS Reagent
- Brand: Dinâmica Química
- Grade: Analytical/ACS grade; Minimum assay 95%
- CAS number: 143-74-8
- Chemical formula: C19H14O5S
- Molar mass: 354.38 g/mol
- Available quantities: 25 g, 100 g, 5 g.
Technical Data
| Physical state | Solid |
| Color | Bright red to dark red |
| Melting/freezing point | Above 300 °C |
| Solubility | 0.77 g/L at 100 °C |
| Density | 2.43 g/cm3 at 25 °C |
| Bulk density | 200 to 300 kg/m3 |
| Typical transition range | Approximately pH 6.8 to 8.2 |
Frequently Asked Questions
What is Phenol Red ACS Reagent used for?
The main applications of Phenol Red ACS Reagent include preparation of indicator solutions for titrations and pH evaluations within the appropriate transition range; indicator component in cell-culture or microbiological media specifying phenol red.
What are the main characteristics of Phenol Red ACS Reagent?
The characteristics listed for Phenol Red ACS Reagent include Acid-base indicator also known as phenolsulfonphthalein; typical visual transition from yellow in more acidic media to red or pink in more alkaline media.
How should Phenol Red ACS Reagent be selected for a laboratory application?
Selection of Phenol Red ACS Reagent should consider the grade, presentation, method requirements, and technical specifications described on this page.
What quantities of Phenol Red ACS Reagent are available?
Phenol Red ACS Reagent is available in 25 g, 100 g and 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 Phenol Red ACS Reagent and request a formal quotation?
Companies, laboratories, educational institutions, and research organizations can purchase Phenol Red ACS Reagent 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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