Description

Phenol Red Sodium Salt is a water-soluble sodium salt derivative of the widely used pH indicator, Phenol Red. This compound is essential for precise pH monitoring and biological research due to its distinct color transition in the critical physiological range. It is a fundamental reagent for laboratories and manufacturers in the biotechnology, pharmaceutical, and diagnostic sectors. Phenol Red Sodium Salt CAS NO 34487-61-1 offers consistent performance and high purity for reliable experimental and production outcomes.

Application

• Cell Culture Media: As a standard pH indicator in mammalian cell culture formulations to visually monitor medium acidity and alkalinity.
• Microbiological Testing: Used in various culture media and biochemical test kits to identify microbial metabolic activity.
• Diagnostic Reagents: A key component in urinalysis strips and other clinical diagnostic tests for pH determination.
• Titration Endpoint Detection: Serves as a visual indicator in acid-base titrations within its effective pH range.
• Biochemical Research: Employed in enzyme assays and metabolic studies where non-toxic pH monitoring is required.
• Educational Kits: Included in chemistry and biology educational kits to demonstrate pH concepts and colorimetry.

Basic Information

Product Name	Phenol Red Sodium Salt
CAS No.	34487-61-1
Molecular Formula	C19H13NaO5S
Molecular Weight	376.36 g/mol
Synonyms	Phenolsulfonphthalein Sodium Salt; Phenol Red, Sodium Salt; Sulfonphthal; PSP Sodium Salt; 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)diphenol S,S-dioxide, sodium salt; 3,3-Bis(4-hydroxyphenyl)-3H-2,1-benzoxathiole 1,1-dioxide, sodium salt; Phenol Red, water soluble
EINECS	Contact for details

Quality Control

Our Phenol Red Sodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for research and industrial applications. A Certificate of Analysis (COA) detailing purity, identity, and other critical parameters is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown to dark red powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
pH Transition Range	6.8 (Yellow) to 8.2 (Red)
Loss on Drying	≤ 5.0 %
Absorbance Ratio (A560/A430)	1.8 - 2.2
Water Solubility	Clear, red solution

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.