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Project at a Glance

Contents on the CD Rom

  • Indigo is among the oldest dyes to be used for textile dyeing and printing. Many Asian countries, such as India, China, and Japan, have used indigo as a dye for centuries. The dye was also known to ancient civilizations in Egypt, Greece, Rome, Britain, Peru, and Africa.
  • Indigo is a subtropical shrub 1 to 2 meters tall that possesses the woad pigment in the leaves. Leaves are crushed and then soaked in water for fermentation (removal of the sugar).
  • The natural dye comes from several species of plant, but nearly all Indigo produced today is synthetic. Among other uses, it is used in the production of denim cloth for blue jeans.
  • Indigo is a dark blue crystalline powder that melts at 390°–392°C. It is insoluble in water, alcohol, or ether but soluble in chloroform, nitrobenzene, or concentrated sulfuric acid.
  • The raw materials used in the natural production of indigo are leaves from a variety of plant species including indigo, woad, and polygonum. Only the leaves are used since they contain the greatest concentration of dye molecules.
  • In Bangladesh indigo was widely cultivated during the early nineteenth century when British planters made large investments in it. The districts where it was widely cultivated were Nadia, Jessore, Bogra, Rangpur and Dhaka.
  • The roots, stems and leaves are biter, thermogenic, laxative, trichogenous, expectorant, anthelminitic, tonic and diuretic, and are useful for promoting the growth of hair and in gastropathy, splenomegaly, cephalagia, cardiopathy, chronic bronchitis, asthma, ulcers and skin diseases.
  • The juice expressed from the leaves is useful in the treatment of hydrophobia. An extract of the plant is good for epilepsy and neuropathy. The plant possesses anti-toxic property.
  • Much of the need for indigo is being met with other types of blue dyes and today most of the indigo used by the world is made out-side the United States.
  • While at present natural indigo accounts for less than 1% of the total indigo market, a European Union survey suggests that by 2005 15% of textile sales will have been dyed using natural products.
  • World consumption of indigo in the 1800s was very large indeed, so in 1866 a German chemist named Adolph von Baeyer began his studies of the pigment and eventually elucidated its chemical structure so that it could be synthesized commercially.
    At the end of the 19th century, Germany was able to produce synthetic indigotine cheaper than the natural dyestuff, and thus Germany then took charge of supplying indigo.
General Introduction
  • Indigo in the Early Modern World
  • Indigo
  • Indigo Dye
  • Indigo dye - Chemical Syntheses
  • Dyeing with Indigo
  • History of the dyestuff
  • MSDS


  • Technology Offer
  • Indigo Dyeing
  • Developments in dyeing technology
  • Dyeing Polyester Fabrics with Indigo
  • Fabric Technology
  • Membrane Technology in Textile Operations
  • Muslims And Muslim Technology In The New World
  • How to Paint Dye With Our "Magic" Indigo Natural Dye Fabric Paint
  • Indigo nation: Champaran to Chandigarh
  • Warp Yarn - Indigo Dye Range

Plants Used and Their Cultivation

  • The Potential Use of Organically Grown Dye Plants in the Organic Textile Industry
  • Indigo Cultivation in British East Florida
  • Western Indigo
  • Isatis tinctoria
  • Indigofera tinctora - Habitat
  • Indigofera jucunda
  • Indigofera tinctoria
  • Fibers, Dyes and Tannins
  • Mercurialis leiocarpa
  • Desert False Indigo
  • Indigo - grow it
  • Randia aculeata L.
  • Polygonum tinctorum
  • Wild Indigo
  • Wild Indigo [Baptisia tinctoria (L.) R. Br.]

Indigo Extraction and Manufacturing Process

  • Extraction Process
  • The preparation of natural indigo
  • Extraction from Indigo Plant
  • How Indigo is Made
  • Improving Quality and Reproducibility of the Indigo Dye Process
  • Indigo - production & trade
  • Dye Production in India
  • Pigment Extraction Techniques
  • Cultivation and Extraction of Natural Dyes for Industrial Use in Natural Textiles Production
  • SPINDIGO –the production chain


  • Indigo Planters
  • German Industry and Global Enterprise
  • Natural Dyeing in India : Past and Future
  • Indigo and Tyrian Purple—In Nature and in the Lab
  • Indigo Market
  • New Projects Boost LINK Programme
  • Sustainable production of plant-derived indigo
  • Dyes and Dye Intermediates
  • Indigo Dye Process
  • Process for Dyeing Cellulosic Textiles with Indigo
  • Method for dyeing cotton with indigo
  • Microbial Production of Indigo
  • Reduced Indigo Dye Penetration
  • Solvent Process for Recovering Indigo Dye From Textile Scrap


  • N S Chemicals & Consultants Pvt. Ltd
  • Experts in 'indigo dye'
  • Global DyeHouse Consultants


  • The Journal of Industrial and Engineering Chemistry
  • The Impact of EU Research
  • Indigo Carmine-Induced Bradycardia in a Patient During General Anesthesia
  • Synthetic Indigo From China
  • ISIS Experimental Report
  • Unravelling the Threads of  History
  • Textiles From Around the Globe


  • Cosmetic Uses
  • Mysterious Dye
  • Japanese Indigo Pigment Sticks
  • Indigo - western medicine
  • Dyeing with Synthetic Indigo Powder In a Reduction Vat
  • Medical Uses, and Dosage
  • The Instant Indigo Dye Kit
  • Indigo Kit

Company Profiles

  • Hebei Wuqiang Chemical Plant
  • Indigo Products Ltd
  • Kirpal Export Overseas
  • KMA Exports
  • KSG Enterprises


  • Indigo Dye Sellers
  • Indigo Blue Dye Suppliers
  • Indigo Dye Manufacturers and Suppliers
  • Indigo Blue Manufacturers and Suppliers
  • Indigo Carmine Suppliers
  • Companies
  • Indigo Powder Suppliers
  • Indigo Dye Manufacturers
  • Indigo Suppliers
  • Equipment Suppliers


  • Indigo Importers List1
  • Indigo Importers List2
  • Indigo Blue Dye Buyers List  
  • Indian Importer & Buyer
  • Importer and Supplier


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