Indigo manufacturers and suppliers in india

Indigo

Properties

Melting point:: >300 °C(lit.)

Boiling point:: 405.51°C (rough estimate)

Density: 1.01 g/mL at 20 °C

vapor pressure: 0Pa at 100℃

refractive index: 1.5800 (estimate)

Flash point:: >220℃

storage temp.: Sealed in dry,Room Temperature

solubility: DMSO (Slightly, Heated, Sonicated), DMF (Slightly)

form: Powder

pka: -3.83±0.20(Predicted)

Colour Index: 73000

color: Dark blue to violet

Water Solubility: <0.1 g/100 mL

Merck: 14,4943

BRN: 88275

Stability:: Stable. Incompatible with strong oxidizing agents.

InChIKey: COHYTHOBJLSHDF-BUHFOSPRSA-N

LogP: 2.7 at 23℃

Safety Information

Symbol(GHS): GHS07

Signal word: Warning

Hazard statements: H315-H319-H335

Precautionary statements: P302+P352-P305+P351+P338

Hazard Codes: Xi,Xn

Risk Statements: 36/38-36/37/38-48/20/21/22

Safety Statements: 26-36

RIDADR: UN 3264 8/PG 3

WGK Germany: 1

RTECS: DU2988400

HS Code: 32041510

Toxicity: LD50 oral in mouse: > 32gm/kg

Use

Indigo, known chemically as indigotin, is a common blue dye that has been highly valued throughout history and has played a major role in trade and commerce since ancient times. The term indigo is often used to describe many blue dyes produced from a number of plants. For example, woad, a blue dye obtained from the plant Isatis tinctoria, was used throughout the Mediterannean and Europe and is often identified as indigo. True indigo comes from the leguminous plant of the genus Indigofera. The Indigofera genus includes several hundred species, and indigo has been obtained from a number of these, but the dominant species for the dye are Indigofera tinctoria grown mainly in India and tropical Asia and Indigofera suff ructiosa from the tropical Americas. The name indigo comes from the Greek indikon and Latin indicum meaning “dye from India.” There is evidence that indigo was used several thou sand years b.c.e. Persian rugs containing indigo color exist from several thousand years b.c.e. Textile artifacts from Egyptian tombs provide evidence of indigo’s use by royalty from as far back as 2500 b.c.e. The writings of Herodotus from approximately 450 b.c.e. mention indigo’s use in the Mediterranean area.