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solvent dyes

solvent dyes
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Solvent dye is a dye which is soluble in an organic solvent and is mostly introduced in the form of a solution in an organic sol

Solvent dye is a dye which is soluble in an organic solvent and is mostly introduced in the form of a solution in an organic solvent.

Dyes are generally defined along the lines of being coloured, aromatic compounds that can ionise. One class of dyes is an exception to this. These colour by dissolving in the target material, which is invariably a lipid or non-polar solvent. The Colour Index uses this as a classification and naming system. Each dye is named according to the pattern: solvent + base colour + number

These dyes are thereby specifically identified as dyes of the stated colour, and whose primary mechanism of staining is by dissolving. Note that this is a functional and colour classification. It contains no chemical information, neither does it imply that dyes with similar names but unique numbers are in any way related. It should also be noted that the classification refers to the primary mechanism of staining. Other mechanisms may also be possible, but are rare.

As a general principle, solvent dyes do not ionise. Many are azo dyes which have undergone some molecular rearrangement and lost the ability to ionise. In the process they gained the ability to dissolve in non-polar materials such as triglycerides. They are commonly used to stain such materials in sections. They are frequently called lysochrome dyes. Lyso- meaning dissolve, and -chrome meaning colour.

 

Solvent dyes:

Solvent Yellow 2

Solvent Yellow 7

Solvent Yellow 14

Solvent Yellow 16

Solvent Yellow 18

Solvent Yellow 33

Solvent Yellow 30

Solvent Yellow 56

Solvent Yellow 72

Solvent Yellow 93

Solvent Red 1

Solvent Red 23

Solvent Red 24

Solvent Red 49

Solvent Red 111

Solvent Red 207

Solvent Orange 2

Solvent Orange 7

Solvent Blue 4

Solvent Blue 35

Solvent Blue 36

Solvent Blue 38

Solvent Black 5

Solvent Black 7

Solvent Green 3

Solvent Green 7

Solvent Violet 8

Solvent Violet 9

Solvent Violet 11

Solvent Violet 13

Solvent Orange 3

Solvent Orange 4

Solvent Orange 105

solvent dyes



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