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china minerals & chemicals group limited of thermal chemicals is CVL

china minerals & chemicals group limited of thermal chemicals is CVL
Product Description

china minerals & chemicals group limited of thermal chemicals is CVL 

Product Description

1.Product Name:Crystal violet lactone(CVL )

Chemical name:

3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide

CAS RN: 1552-42-7

EINECS:216-293-5

Molecular formula: C26H29N3O2

Molecular weight:415.5274

Melting point:180-183℃

Water solubility :<0.1 g/100 mL at 22.5℃

Appearance: Pale yellow or white powder

2.Crystal violet lactone(CVL )Functions:

CVL is a good thermal and pressure sensitive dye which has the following advantages:discoloration fast and high chromaticity and oil-soluble, widely used in the commercial invoice, computer output terminal summons,information records,etc.

3.Crystal violet lactone(CVL )Workshop:

General dye is colored conjugated system in addition to the CVL. CVL can be used as a thermal and pressure sensitive dye, its conjugated system is interrupted. So CVL has no color. But it will be colored with the effect of chromogenic agent. Under acid condition, CVL will show violet color(bright, high concentrations).


CVL is an important functional dye in the production of pressure-sensitive materials or heat sensitive materials.

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