Indigo

The granular indigo is processed by spray drying the slurry of acid washing indigo with additive,This product is dark-blue uniform powdery or granular. It cannot be dissolved in water and common organic solvents such as ethanol and aether, but can be dissolved in hot aniline and melt phthalic anhydride. Its melting point in the closed capillary is 390-392°C, and it begins sublimating slowly at 290°C. It has very good sunburn endurance and application performance.

1.Introduction

Appearance:Dark blue Powder, Granule

Molecular formula: C16H10N2O2

Molecular weight: 262.67

CAS No.:482-89-3            

HS No.: 3204.1510.00

Function :For dyeing on cotton fabrics and Jeans and making up indigo bromide or made into organic pigment.

2.Technical Specification

3.Application 

Mainly used in the dyeing of cotton yarns, cotton cloth, wool and silk; pure products are used in the dyeing of food; or processed into organic pigments.

4.Packing

25KG Plastic-Woven Bag with double polyester liner.
20KG Carton with double polyester liner.

20KG/15KG Iron Drum with double polyester liner.

5.Storage and Transportation

The product must be stored in shade, dry & well-ventilated warehouse. Avoid to be contacted with oxidizing chemicals and combustible organic substances. Keep it away from direct sunlight, heat, sparks and open flames. Carefully handle the product and avoid damaging the package.