A Brief Report on Green Natural Dyes Based on Color Index Introduction Importance Classification Limitations of Natural Dyes Color Index CI Natural Green CI Natural Green 1 CI Natural Green 2 CI Natural Green 3 CI Natural Green 4 CI Natural Green 5 Natural Dyes Classification Limitations of Natural Dyes References

1. Hajira Mahmood
PHD Chemistry

2. A Brief
Report on Green Natural
Dyes Based on Color Index
A Report

3. Contents
• Introduction
• Importance
• Classification
• Limitations of Natural Dyes
• Color Index
• CI Natural Green
• CI Natural Green 1
• CI Natural Green 2
• CI Natural Green 3
• CI Natural Green 4
• CI Natural Green 5
• References

4. Introduction
Natural Dyes:
Dyes that are derived from natural
resources from plant animals,
minerals etc.
Available to mankind from antient
time to till now for textiles.
Renewable
Biodegradable & biocompatible
Economically important.
(Samanta and Konar 2011)

5. Importance
• Amazing start of an innovative type of technological
adventure.
• Used to dye all types of fibers synthetic as well as natural.
• People across the world managed to live in colors.
• Set a color of rainbows in every field of life.
(Dawson 2009)

6. Classification of Natural dyes
Origin
Color
Mode of
Application
Chemical
Constitutes
(Buchanan, 1987).

7. .(Agarwal et al., 1989)

8. Limitations of Natural Dyes
• Difficult to reproduce shades
• Require Tedious extraction.
• Prolonged exposure to air converts the colorant
• Fugitive
• Harmful
• Corrosive when inhaled, ingested, or absorbed through the
skin.
• Irritating and cause inflammation
• Require mordant for application.
(Hill 1997).

9. Color Index
• A simple numerical expression that determines difference in
brightness of the color of an object, which in the case of
a star gives its temperature.
• Smaller the color index, bluer or hotter the object is.
• Larger the color index, the more red or cooler the object is.
• Example:

10. CI Natural Green
• CI Natural Green 1
• Occurrence in species of Rhamnous
• Two forms R.chlophorus Dec. and Rutile Dec.
• Coloring matter Lokao.
• Dye silk and cotton green.
• Uses textile dye, cosmetic
• Indelible marker agent & ink component.

11. CI Natural Green 2
• Have following C.I No. 75440, 75650 & 75695.
• CI Natural Green 2 (75695)
• Common name is Xanthorhamnin or Rhamnetin 3-
rhamnoside.
• Present in sap green and Hungarian berries.
• Firmly used to color paper & leather, artist’s water colors.
Rhamnetin (Nabi et al, 2012

12. CI Natural Green 2 (75650)
• Common name is Kaempferol 7-methyl ether.
• Present in sap green and Hungarian Berries .
• Principle colorant rhamnetin
• Other Phytoconstituents are Rhamotannic acid, quercetin,
xanthorhamnin, emodins & kaempferol (R. cartharticus).
(Deveouglu, 2013).

13. CI Natural Green 2 (75440)
•Emodins Himalayan rhubarb
•Present in the form of Rhamnous Frangula.
•Other Names Emodol, rheum emodins, Persian Berry
•Exhibit antimicrobial properties
•Yields bright & rich gold colors on wool and silk.
•Phytoconstituents chrysophanol, aloe-emodins, Rhein,
emodins & physcion,
•Applications textiles, medicine, cleaning teeth.
(Das et al., 2008)

14. Ci Natural Green 3
• Main constituent Chlorophyll
• Occurrence green leafy vegetables
• Antibacterial property
• Phytol makes chlorophyll fat-soluble and water insoluble
• Other Phytoconstituents Chlorophyll Cu complex, Copper
sodium chlorophyllin, Chlorophyllin-copper complex
Chlorophyllin copper sodium salt
• Ultrasonic dyeing method enhances the fastness properties of
dyed wool at acidic PH.
• Applications food industry. (Hanh, 1998)

15. CI Natural Green 4
• Present in powdered form pistachio integerrimo stewart
• Common name zebrawood, kakar singhi.
• Produce green colors on alum-iron mordanted cotton.
• Other Phytoconstituents triterpenoids, flavonoids, sterol,
fatty ester, keto alcohol.
• Uses Timber, dye, fodder & as herbal medicine.
(Anonymous, 1998)

16. CI Natural Green 5
C. I. No.: 75810/75815
• Main constituent Chlorophyllin
• Chlorophyllin semi-synthetic derivatives of chlorophyll
• Water-soluble salts
• Common form sodium/copper derivative.
• Use as food additive & in alternative medicine.
Chlorophyllin
(Hanh, 1998)

17. References:
• Samanta, A. K., & Konar, A. (2011). Dyeing of textiles with natural dyes. InNatural dyes. InTech.
• Dawson TL (2009) Biosynthesis and synthesis of natural colors. Color Technol 125:61–73
• Hill DJ (1997) Is there a future for natural dyes? Rev Prog Color27:18–25
• Deveouglu O (2013) Marmara university, natural dye researcher
• Buchanan R (1987) A Weaver’s garden: growing plants for natural dyes and fibers. Dover, New York, p
228 shades on wool using mixed mordants with Acacia catechu (Cutch). Colourage
• Agarwal OP, Tiwari R (1989) Mineral pigments of India. In: Compendium of the national convention of
natural dyes. National Handloom Development Corporation, Lucknow, Jaipur. Accessed 20–21 Oct
1989.
• Das D, Maulik SR, Bhattacharya SC. Colouration of wool and silk with Rheum emodi. Indian J Fibre
Text Res 2008;33:163e70.
• Anonymous, 1998. The Wealth of India. A Dictionary of Indian Raw Materials and Industrial Products,
vol. VIII. Publication and Information Directorate, CSIR, New Delhi, p. 120.
• Hahn NI. Is Phytoestrogens Nature’s Cure for What Ails Us? A Look at the Research. Journal of the
American Dietetic Association, 1998, 98: 974- 976
.