Description

3',3'',5',5''-Tetraiodophenolphthalein, Sodium Salt is a high-purity iodinated organic compound, widely recognized for its utility as a specialized reagent and intermediate. This compound is valued for its unique chemical structure, which imparts specific reactivity and functionality critical for advanced synthesis and analytical applications. It is primarily sought by research institutions and manufacturers in the pharmaceutical, diagnostic, and fine chemical sectors for developing novel compounds and specialized testing protocols.

Application

• Pharmaceutical Intermediate: Used in the synthesis of specialized active pharmaceutical ingredients (APIs) and contrast agents.
• Diagnostic Reagent: Serves as a key component in the formulation of specific biochemical assays and diagnostic kits.
• Research Chemical: Employed in academic and industrial R&D for studying iodination reactions and developing new analytical methods.
• Dye & Indicator Precursor: Acts as a precursor for the production of specialized dyes and pH or redox indicators.
• Fine Chemical Synthesis: Utilized as a building block for creating complex, iodinated organic molecules in custom synthesis projects.

Basic Information

Product Name	3',3'',5',5''-Tetraiodophenolphthalein, Sodium Salt
CAS No.	632-73-5
Molecular Formula	C20H8I4Na2O4
Molecular Weight	915.78 g/mol
Synonyms	Tetraiodophenolphthalein Sodium Salt; Phenolphthalein, 3',3'',5',5''-tetraiodo-, disodium salt; Iodophenolphthalein Sodium; Sodium 3,3-Bis(4-hydroxy-3,5-diiodophenyl)-1(3H)-isobenzofuranone; NSC 401565; 3,3-Bis(4-hydroxy-3,5-diiodophenyl)phthalide Sodium Salt; Disodium 3,3-Bis(4-hydroxy-3,5-diiodophenyl)isobenzofuran-1(3H)-one
EINECS	211-185-7

Quality Control

Our 3',3'',5',5''-Tetraiodophenolphthalein, Sodium Salt is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and NMR to verify identity and potency. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
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.