Crystal violet lactone 97% (dye content), Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY
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Synonyms: 6-(Dimethylamino)-3,3-bis[p-(dimethylamino)phenyl]phthalide, 3,3-Bis(p-dimethylaminophenyl)-6-dimethylaminophthalide

332488-25G 332488-5G
332488-25GEA 326 GBP
332488-25G 332488-5G
Crystal violet lactone 97% (dye content), Sigma-Aldrich®
Crystal violet lactone

Crystal Violet lactone, Dye content 97%.


Crystal Violet lactone (CVL) is a colorless lactone derivative of crystal violet. The CVL compound contains two dimethylaniline groups attached via a tetrahedral carbon atom to 6-dimethylaminophthalide at the third position. Crystal violet lactone is suitable for use in color-changing printing. It serves as a reversible color system with temperature change.

Formula: C₂₆H₂₉N₃O₂
MW: 415.54 g/mol
Melting Pt: 180...183 °C (lit.)
Storage Temperature: Room Temperature
MDL Number: MFCD00070611
CAS Number: 1552-42-7
EINECS: 216-293-5
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Specification Test Results

Appearance (Form) Powder
Infrared Spectrum Conforms to Structure
Wavelength, c = 0.01 g/L; Methanol 269 - 275 nm
Extinction Coefficient ≥50000
Carbon 72.4 - 77.8%
Nitrogen 9.6 - 10.5%

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