Description

Bromocresol Green Sodium Salt is the water-soluble sodium salt form of the widely used pH indicator Bromocresol Green. This compound is essential for precise pH determination and endpoint detection in analytical chemistry and life science applications. It is primarily needed by manufacturers of laboratory reagents, diagnostic kits, and research institutions for applications in titration, microbiology, and biochemical assays.

Application

• pH Indicator in Titration: Used as a visual endpoint indicator in acid-base titrations, particularly in the pH range of 3.8 to 5.4 where it transitions from yellow to blue.
• Microbiological Media: Incorporated into culture media as a pH indicator to detect metabolic acid production by microorganisms.
• Diagnostic Reagents: A key component in the formulation of clinical chemistry reagents and test strips for urinalysis and other diagnostic procedures.
• Biochemical Research: Employed in various biochemical assays and electrophoresis buffers to monitor pH changes.
• Laboratory Standards: Used in the preparation of standardized pH buffer solutions and calibration standards.
• Educational Kits: Supplied for educational chemistry kits to demonstrate principles of acidity, alkalinity, and titration.

Basic Information

Product Name	Bromocresol Green Sodium Salt
CAS No.	1007478-52-5
Molecular Formula	C21H13Br4NaO5S
Molecular Weight	720.00 g/mol
Synonyms	Bromocresol Green Sodium; 3',3'',5',5''-Tetrabromo-m-cresolsulfonphthalein Sodium Salt; BCG Sodium Salt; Bromcresol Green Sodium Salt; Bromocresol Green Na; Bromothymol Blue related compound (Sodium Salt); Acid-base indicator Sodium Salt; Bromocresol Green water soluble
EINECS	Contact for details

Quality Control

Our Bromocresol Green Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with relevant standards for laboratory and diagnostic use. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and specific tests is provided with every shipment.

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 material is light-sensitive (store away from light). Keep the container tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	Green to dark green powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
pH Transition Range	3.8 (yellow) to 5.4 (blue)
Loss on Drying	≤ 5.0 %
Residue on Ignition (Sulfated Ash)	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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