Hot Sale Indigo Dyes Vat Indigo Blue Powder

Product Description

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.IntroductionAppearance:Dark blue Powder, GranuleMolecular formula: C16H10N2O2Molecular weight: 262.67CAS No.:482-89-3 HS No.: 3204.1510.00Function :For dyeing on cotton fabrics and Jeans and making up indigo bromide or made into organic pigment.
Product Parameters

Item	original powder	Powder (Diffusion)	Granule
Appearance	Dark blue even powder	Dark blue even powder	Dark blue even granule
Content (Oxidimetry)%	≥94	≥93	≥93
Particbe size (-60 mesh)%	≥96	≥96	-
Moisture%	≤1.0	≤1.0	≤1.0
Fe3+	≤500ppm	≤300ppm	≤200ppm

Application 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
FAQ
1) What is your terms of payment ? T/T 30% deposit and the balance against copy of B/L or L/C at sight.2) What is your terms of delivery ? FOB , CNF,CFR , CIF
3) How about your delivery time ? About 7-10 days after your deposit or L/C draft4) Can you produce according to the samples ? Yes , we can produce by your samples or technical drawings . 5) What is your sample policy ? We can supply the sample free of charge and freight collect .6) Do you test all your goods before delivery ? Yes , we have 100% test before delivery . 7) How do you make our business long-term and good relationship ? (1)We keep good quality and competitive price to ensure our customers benefit . (2)we respect every customer as our friend and we sincerely do business and make friends with them .

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