SOLVENT DYES

PRODUCT

C.I. No.

CAS NO.

Solvent Yellow 2

11020

60-11-7

Solvent Yellow 7

11800

 

Solvent Yellow 14

12055

842-7-9

Solvent Yellow 16

12700

4314-14-1

Solvent Yellow 18

12740

6407-78-9

Solvent Yellow 33

47000

8003-22-3

Solvent Yellow 56

11021

 

Solvent Yellow 72

    

61813-98-7

Solvent Yellow 93

    

4702-90-3

Solvent Red 1

12150

1229-55-6

Solvent Red 23

26100

85-86-9

Solvent Red 24

26105

85-83-6

Solvent Red 49

45170:1

 

Solvent Red 111

60505

82-38-2

Solvent Red 207

61701

15958-69-6

Solvent Orange 2

12100

2646-17-5

Solvent Orange 7

12140

 

Solvent Blue 4

44045:1

6786-83-0

Solvent Blue 35

61554

17354-14-2

Solvent Blue 36

61551

14233-37-5

Solvent Blue 38

-

1328-51-4

Solvent Black 5

50415

11099-3-9

Solvent Black 7

50415B

2229843

Solvent Green 3

61565

128-80-3

Solvent Green 7

-

6358-69-6

Solvent Violet 8

42535:1

52080-58-7

Solvent Violet 13

60725

81-48-1

Solvent Yellow 30

 

 

Solvent Citrus Red 2

12156

 

Solvent Red 30

 

6226-87-5

Solvent Red 111

60505

82-38-2

Solvent Orange 3

11270:1

495-45-5

Solvent Orange 4

11320:1

 

Solvent Orange 105

 

 

Solvent Blue 68

 

4395-65-7

Solvent Green JCL

 

 

Solvent Violet 9

 

467-63-0

Solvent Violet 11

 

128-95-0

"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. .

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