1.Products description of indigo blue:Molecular formula: C16H10N2O2
Molecular weight: 262Nature :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.Appearance:Dark blue even Granular and Powder
2.Specification of indigo blue:
| Cas No. | 482-89-3 |
| Colour Index | Vat Blue 1 |
| Appearance | Dark blue,Powder |
| 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 |
3.Usage of indigo blue:1. widely used for dyeing cotton fibre and polyester;
2. used for direct printing on cotton fibre
3. can be processed into organic pigment
4.Package of indigo blue:
25kg/bag,11MT/20'FCL5.FAQ:
Q1: Can I visit your company?
Yes, welcome to visit our company and inform us in advance.
Q2: Can you send a sample for our reference?
Of course. Sample can be sent on your request, by the way, trial order is available.
Q3: Will you protect the development for barnd company?
All the development for the brands we will not share with other customers without permission to secure the benefits of brand buyer.
Q4: What is the payment item?
T/T or L/C at sight is acceptable, and other payments are negotiable.
Q5. What"s the lead time of each order?
In general, lead time for lab dips is 2-3 days and lead time for bulk production is 7-15days after all details confirmation.
Q6.How to confirm the quality with us before start to produce? (1)You can get samples choose among it , then we make the quality according to that.
(2)Send us your sample, and we make the product according to your quality.
Welcome to your business!!!
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