| Customization: | Available |
|---|---|
| CAS No.: | 860-22-0 |
| Formula: | C16h8n2na2o8s2 |
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Product Description:
FD & C Blue No. 2 is principally the disodium salt of 2-( 1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro3-oxo-lH-indole-5-sulfonic acid.
The colorant is a blue-brown to red-brown powder that dissolves in water to give a solution that is blue at neutrality, blue-violet in acid, and green to yellow-green in base. When dissolved in concentrated sulfuric acid, it yields a blue-violet solution that turns blue when diluted with water. It is soluble in 95% ethanol.
FD & C Blue No. 2 is used in dessert powders, bakery goods, cereals, snack foods, confectionery products, maraschino cherries, sausage, ice cream, sherbet, and dairy products. The color is also used in drug preparations
| SR.NO. | TEST | SPECIFICATIONS | RESULTS |
| 1 | PHYSICAL APPEARANCE | FINE POWDER | FINE POWDER |
| 2 | PURE DYE CONTENT | 85.0% MIN | 89.30% |
| 3 | SUBSIDIARY DYES | 6.0% MAX | 0.10% |
| 4 | ETHER EXTRACTION | 0.2% MAX | 0.07% |
| 5 | CHLORIDES & SULPHATES PERCENT BY MASS | 4.00% MAX | 3.40% |
| 6 | LOSS ON DRYING AT 135°c, 1 HOUR | 10% MAX | 5.00% |
| 7 | LEAD | <2 PPM | PASSES |
| 8 | ARSENIC | <2 PPM | PASSES |
| 9 | MERCURY | <1 PPM | PASSE |
Indigo carmine in a 0.2% aqueous solution is blue at pH 11.4 and yellow at 13.0. Indigo carmine is also a redox indicator, turning yellow upon reduction. Another use is as a dissolved ozone indicator through the conversion to isatin-5-sulfonic acid.This reaction has been shown not to be specific to ozone, however: it also detects superoxide, an important distinction in cell physiology. It is also used as a dye in the manufacturing of capsules.
In obstetric surgery, indigo carmine solutions are sometimes employed to detect amniotic fluid leaks. In urologic surgery, intravenous injection of indigo carmine is often used to highlight portions of the urinary tract. The dye is filtered rapidly by the kidneys from the blood, and colors the urine blue. This enables structures of the urinary tract to be seen in the surgical field, and demonstrate if there is a leak. However, the dye can cause a potentially dangerous increase in blood pressure in some cases.
HUNAN JQMATERIAL Co.,Ltd is reputable supplier specialized in pigments and dyes since 2010. After years of development, the company has an experienced sales and after-sales service team.
Strict quality guarantee system and perfect management system, high-quality products after-sales service is our foothold. Based on "quality first, reputation first" principle , provide customers with qualified colorants food, cosmetic and pharmaceutical industries and organic intermediate for dyes and pharmaceutical industry.
MOQ is 1KG. We have 1kg bag and bottle
5KG bottle and 20L bottleSample usually shipped by Fedex, DHL, UPS.
Bulk order can be shipped by sea, air or by railway.
1. Before shipment, free sample for test
2. Packing as your request, with photo before shipment
3. Cargoes photo before and after loading into container
4. Fast shipment by reputed shipping line
5. Best service after shipment with emails
Q1: Are manufacturer or trading company?
A: We are manufacturer. You are welcome to visit our factory.
Q2: How to contact with us?
Q3:Which kind of payment terms do you accept?
For bulk order, you can pay to our company's bank account.
Q4:How can I make payment safe?
Q5:How can I get a sample?
A few sample is free but you need to pay for the shipping cost.we normally send sample by FEDEX, DHL,EMS.
Q6: Is it possible to custom the labels with our own design?
A: Yes, just send us your artworks, you will get what you want
For More Information Send us Inquiry as below Please !!!
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