Indigo

Synonym(s)

: Indigotin, Indigo Blue, Vat blue 1, 2-(1,3-dihidro-3-okso-2H-indol-2-iliden), 1,2-dihidro-3H-indol-3-on

Mol. Formula

: C16H10N2O2

EC / List no.

: 215-259-7

CAS no.

: 1315-09-9

Molecular weight

: 262,26

Indigo dye is a member of the hydroxyindoles. It is an organic compound with a distinctive blue color. It is primarily a dye used for cotton yarn in the production of denim fabric for blue denim trousers.

Application

» This substance is used in the following areas: formulation of mixtures and/or repackaging.
» This substance is used in the manufacture of textiles, leather or fur, wood and wood products, and pulp, paper and paper products.
» Other releases of this substance into the environment are likely to occur: indoor use.

Product Specifications

Physical and Chemical Properties
» Appears like shiny dark blue powder.
» Odorless.

Properties

Characteristics	Unit	Value	Condition
Melting point	°C	390
Density	g/ cm³	1.35
Solubility	µg/ L	50	23 °C, soluble with water
Vapor pressure	Pa	0	100 °C
LogP		2.7	23 °C
Flash point	°C	220