Crystal violet lactone（CVL）CAS:1552-42-7

Chemical Name: Crystal Violet Lactone
Synonyms: CVL, 3,3-Bis(4-dimethylaminophenyl)-6-dimethylaminophthalide
CAS No.: 1552-42-7
Molecular Formula: C₂₆H₂₉N₃O₂
Molecular Weight: 415.53 g/mol
Appearance: White to off-white crystalline powder

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Quality Specifications

Parameter	Specification
Assay (HPLC)	≥96%
Total Colorless Dye	≥97%
Loss on Drying	≤0.2%
Impurities	≤0.1%

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Applications

Pressure-Sensitive Paper:Key color former for carbonless copy paper (NCR paper)Used in commercial invoices, receipts, and fax papersFunctional Dye:High-sensitivity color developer with fast response

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Packaging & Shipping

Standard Packaging:25 kg/bag (aluminum foil bag with desiccant)Custom Options:Smaller quantities available (1 kg, 5 kg)

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Storage & Handling

Storage Conditions:Store in a cool, dry, ventilated warehouse (<25°C)Relative humidity: <60%Protection Measures:Light-sensitive – use opaque/amber containersMoisture-sensitive – keep containers sealed

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