Description

Tetrabromophenolphthalein Sodium Salt is a high-purity, organobromine indicator compound valued for its distinct colorimetric properties. This chemical is essential for analytical procedures requiring precise pH or endpoint detection in specific ranges. It serves as a critical reagent for laboratories and quality control departments across the pharmaceutical, chemical manufacturing, and research sectors.

Application

• pH Indicator: Used in analytical chemistry as a visual indicator for titrations within its specific pH transition range.
• Biochemical Staining: Employed in histological and cytological staining procedures for microscopic analysis.
• Research & Development: Serves as a key reagent in method development and validation for new analytical protocols.
• Educational Laboratories: Utilized in academic settings for teaching fundamental principles of acid-base chemistry and indicator theory.
• Quality Control Testing: Applied in industrial QC labs for the analysis of raw materials and finished products.
• Dye Intermediate: Acts as a precursor or intermediate in the synthesis of specialized dyes and pigments.

Basic Information

Product Name	Tetrabromophenolphthalein Sodium Salt
CAS No.	1301-21-9
Molecular Formula	C20H8Br4Na2O4
Molecular Weight	677.88 g/mol
Synonyms	Bromophenol Blue Tetrasodium Salt; Tetrabromophenolsulfonephthalein Sodium Salt; 3',3'',5',5''-Tetrabromophenolphthalein Sodium Salt; Bromophenol Blue, Sodium Salt; BPB Sodium Salt; NSC 10484; Acid Blue 93; C.I. 42780
EINECS	215-087-1

Quality Control

Our Tetrabromophenolphthalein Sodium Salt is manufactured under a strict quality management system. Each batch is subjected to comprehensive analytical testing, including identification, purity assay, and impurity profiling, to ensure it meets exacting standards for consistent performance. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0 %
Solubility	Soluble in water, ethanol
pH (1% Solution)	3.0 - 4.5

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