Blog Details

Classification of Dyestuff

by : Rahul Sharma

Dyestuff :
Dyestuff is organic or inorganic substances which can absorb light and reflect some lights to show color. Actually, the dyestuff is water soluble substances.

Criteria for a Suitable Dyestuff

1. Cheap
2. Non-toxic
3. Compatible to other dyes and chemicals
4. High color strength
5. Better brightness
6. Better fastness
7. Good levelness on the materials

Classification of Dyestuffs:
Dyestuffs can be classified according to two ways

1. According to common parent structure
2. According to application

Classification according to common parent structure or Chemical classification of dyes:

1. Nitro dyes.
2. Nitroso dyes.
3. Azo (Monazo) dyes.
4. Azoic dyes.
5. Stilbene dyes
6. Tgri0aryl methane dyes.
7. Xanthenei dyes.
8. Quinoline dyes.
9. Methine dyes.
10. Acridine dyes.
11. Nitro dyes.
12. Sulphur dyes.
13. Thiazole dyes.
14. Thizine dyes.
15. Indamine dyes.
16. Oxazine dyes.
17. Azine dyes.
18. Lectone dyes.
19. Anthra quinine dyes.
20. Indigoid dyes.
21. Phthalocyanin dyes. 

Classification according to Application of dyes: 

1. Basic dyes
2. Acid dyes
3. Direct dyes
4. Reactive dyes
5. Sulfur dyes
6. Premetallized dyes 
7. Azoic (Napthol) dyes
8. Disperse dyes
9. Vat dyes