Description

Crystal Violet Lactone is a versatile and highly important leuco dye intermediate. This compound is valued for its ability to undergo a dramatic color change from colorless to an intense violet or blue upon exposure to acidic conditions or specific activators. It is a critical raw material for manufacturers in the specialty chemicals and advanced materials sectors, where precise color development is required. Key industries that rely on this product include the production of thermal papers, pressure-sensitive copying papers, and various types of color-forming indicators and sensors.

Application

• Thermal Paper Production: Serves as the primary color-forming leuco dye in thermal receipt papers and fax papers, developing color upon heat application.
• Carbonless Copy Paper: A key component in the dye system for pressure-sensitive (carbonless) copy paper forms.
• Security Printing: Used in the formulation of inks for security documents, tickets, and labels where verification or anti-tampering features are needed.
• Reversible Thermochromic Materials: Incorporated into pigments and plastics that change color with temperature, used in novelty items, mood rings, and temperature indicators.
• Chemical Indicators: Functions as a pH indicator or a developer in diagnostic and analytical test strips.
• Research & Development: Employed in academic and industrial R&D for studying electron transfer processes, developing new chromogenic systems, and synthesizing advanced organic materials.

Basic Information

Product Name	Crystal Violet Lactone
CAS No.	1552-42-7
Molecular Formula	C26H29N3O2
Molecular Weight	415.53 g/mol
Synonyms	CVL; 3,3-Bis(4-dimethylaminophenyl)-6-dimethylaminophthalide; Leuco Crystal Violet Lactone; 6-(Dimethylamino)-3,3-bis[4-(dimethylamino)phenyl]-1(3H)-isobenzofuranone; 3,3-Bis(p-dimethylaminophenyl)-6-dimethylaminophthalide; Benzamide, N,N,N',N',N'',N''-hexamethyl-; 1(3H)-Isobenzofuranone, 6-(dimethylamino)-3,3-bis[4-(dimethylamino)phenyl]-
EINECS	216-294-0

Quality Control

Our Crystal Violet Lactone is produced under a strict quality management system to ensure batch-to-batch consistency and high performance in your formulations. Each lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. A Certificate of Analysis (COA) detailing specific results for purity, color value, and melting point is provided with every shipment to support your quality assurance protocols.

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). Keep away from heat, open flames, and strong acids. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder
Identification (IR)	Conforms
Melting Point	178 - 182 °C
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%

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