Indigo Blue 94%/ Vat Blue 1 for Cotton Fabric

Model NO.
Textile Dyestuff Chemical
Textile Printing Auxiliary, Dying Auxiliary
Other Names
Vat Blue 1
Physical State
Solid for Vat Dyes
Cotton Fabric, Textile Dyestuffs
94% Min
Shelf Life
2 Years
Boiling Point
600 ° C
Melting Point
Transport Package
25 Kgs Net Bag
94% min
Henan, China
HS Code
Persisting in "High high quality, Prompt Delivery, Aggressive Price", we've established long-term cooperation with clients from the two overseas and domestically and get new and old clients' superior comments for Indigo Blue 94%/ Vat Blue 1 for Cotton Fabric, The product will supply to all over the world, such as: Hungary, Hamburg, Uganda, We attained ISO9001 which provides solid foundation for our further development. Persisting in "High quality, Prompt Delivery, Competitive Price", we have established long-term cooperation with clients from both overseas and domestically and get new and old clients' high comments. It is our great honor to meet your demands. We are sincerely expecting your attention.
Zhengzhou Kelai Chemical Co., Ltd. Diamond / Audited Supplier
Indigo Blue 94%/ Vat Blue 1 for Cotton Fabric

Basic information

Indigo Blue:coloring matler index C.1 revert blue (73000). Indigo bule is an important organic dye, for dyeing on cotton fabrics and jeans and making up indigo bromide,or made into organic

Cas No. 482-89-3
Colour Index  Vat Blue 1
Appearance Dark blue, Powder, Granular
Strength  80%~94%
HS Code 32041510
MF C16H10N2O2
Relative molecular weight 262.27(according to the International molecular weight of 1983
Colour light Similar as the standard sample
Content ≥93.0%,94.0%
Moisture content ≤1.0%
Strength Equal to 100 percent of the standard sample
PH Range 9.5-10.5
Content of ferric ions ≤200PPM
Properties It is insoluble in water and alcohol.It is soluble in hot Aniline

Nature:the appearance is dark blue even grains.It dissolves in hot anilin,but not in water. It turns yellow green when meeting the oil of vitriol.It is yellow in alkaline rongalite revert liquid and white in acidic liquid.
Specification of Indigo blue 94%


Products name Indigo(C.I Vat Blue 1#)
molecular formula C16H10N2O2
molecular weight 262
test condition HG/T 2750-1996
appearance dark-blue uniform powder or granule
(1)original powder
content %≥94.0
particbe size(60mesh) %≥96.0
moisture %≤1.0
Fe3+ <200PPM
(2) pelleting
content %≥94.0
moisture %≤1.0
Fe3+ <200PPM
content %≥93.0
moisture %≤0.8
Fe3+ <200PPM


It is mainly used to dye cotton fibre .The pop “cowboy” clothes mostly are made by indigo blue dying longitudinal yarn and white yarn interweaving;It can be used with sulfurated coloring matter;
Also we can get indigo white,bromized indigo blue from it,they are well used in food coloring matter, biochemistry etc.


25KG Plastic-Woven Bag with double polyester liner
Storage & 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.

Why choosing us:

1. Over 10 years export experience in the chemical industry with professional sevice. 
2. Strong professional team to develop product and control mass production quality.
3. Usually the standard of PHASE-I is between 10%–30%, we can adjust it based on buyers demand.