Azo Rubine CAS 3567-69-9
Factory Supply Azo Rubine CAS 3567-69-9 with Best Price
- Appearance: Red brown powder
- Purity: 99. 0%min
- Stock: In stock
- Sample: Available
- Zhishang Chemical: Azo Rubine Supplier & Manufacturer
Azo Rubine: The Complete Guide
Azo Rubine for Sale
Basic Info of Azo Rubine
Chemical Name: | Azo Rubine |
Other Name: | C.I. 14720; :Azorubin pure; ChroMotrope FB; Acid Red 14; Azorubine |
CAS: | 3567-69-9 |
EINECS: | 222-657-4 |
Type: | Food additives; Pharmaceutical raw materials; Dye Intermediates |
Molecular Formula: | C20H12N2Na2O7S2 |
Molecular Weight: | 502.43 |
Fp | >225℃ |
Colour Index | 14720 |
form | neat |
color | Red brown |
Odor | Odorless |
Water Solubility | Soluble in water |
Brand Name: | Zhishang Chemical |
Provide: | Azo Rubine MSDS; Azo Rubine COA |
What is Azo Rubine?
Nitrogen red or azorubine is an azo dye, which is produced as disodium salt through chemical synthesis. In its dry state, it is red to maroon. It is mainly used in food for heat treatment after fermentation. E code is E122.
In the United States, this color was listed as FD & C Red No. 10 in 1939 for topical drugs and cosmetics. It was delisted in 1963 because no one was interested in the research needed to support the establishment of security. It is not used in American food.
In the EU, azorubine, known as E-number E122, is authorized for use in certain foods and beverages, such as cheese, dried fruits and some alcoholic beverages, and is allowed to be used as an excipient of drugs.
There is no provision on azo red base in the food code.
Azo Rubine Uses
- Edible red coloring.
- Azo rubine and acid lake blue A make up acid medium dark blue AGLO. Its heavy metal salts can be used as organic pigments.
- Azo rubine is mainly used for the dyeing of wool, silk and nylon and the direct printing of fabrics. It is mostly used for wool fabrics. It is typically dyed with acid eco-friendly B or acid lake blue A. It can be dyed with chrome to get navy blue color. If a small amount of acid violet 4BNS is added to adjust the color, the color will be more vivid, which is the main use of azo rubine. Due to its susceptibility to metals, it is not suitable for dyeing red.
- Azo rubine is additionally utilized for the coloring of natural leather, paper, anodized aluminum, ink, timber items, biological items, cosmetics, and so on, in addition to the coloring of medication as well as food, and also can likewise be made into lake pigments.
- Azo rubine is a kind of red dye used for food after fermentation.
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This is William, CEO of Zhishang Chemical Co., Ltd.
Welcome to visit our factory . As the top chemical manufacturer, we have been striving for product quality, innovation , R&D, and customer service for the past 7 years. In the next 10 years or even longer, we are committed to becoming the most reliable chemical supplier in the world , creating a well-known international brand trusted by customers, with the spirit of “one meter wide, ten thousand meters deep”, we continue to focus on product research and development, continue to focus on customer service, continue to improve the supply chain service system, to create a professional chemical supply service team, to achieve win-win long-term cooperation. Please feel free to contact us if you have any questions.
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- Email: sales002@sdzschem.com
- Phone: +86 176 5311 3209
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If you want to buy azo rubine, pls contact us to get a free quote.
Production Method of Azo Rubine
Using 1,4-aminonaphthalenesulfonic acid and NW acid as raw materials, 1,4-aminonaphthalenesulfonic acid was diazotized and coupled with NW acid to obtain the product. The finished product is obtained by salting out, filtering and drying.
Add 1000L of water and 200kg of 1,4-aminonaphthalenesulfonic acid to the diazonium pot, stir to dissolve. Then add 492kg of hydrochloric acid (15%), cool down to 0°C, add 30% sodium nitrite solution (containing 57.6kg of NaNO2), control the temperature below 25°C, and keep it for 1.5h to obtain a diazo liquid.
Add 1250L of water, 192kg of soda ash and 89kg of NW acid to the coupling pot, stir to dissolve, cool to 15°C, slowly add the above diazonium solution within 2h, and stir until the diazonium salt disappears. Continue to stir for 3h, heat up to 65-70°C, add salt for salting out, filter, dry and pulverize to obtain the finished product.
Sodium 1,4-aminonaphthalene sulfonate is diazotized, coupled with NW acid (1-naphthol-4-sulfonic acid), and obtained by salting out.
- Diazotization Dissolve 200kg of sodium 1,4-aminonaphthalene sulfonate in 1000L of water. Add 492kg of 15% hydrochloric acid. Precipitated milky white crystals. Cool to 10°C and add 30% sodium nitrite solution (100% 57.6kg) from below the liquid surface, and control the feeding temperature below 25°C to make the potassium starch sulfonate test paper light blue, and keep it for 1.5h. In 1,4-aminonaphthalenesulfonic acid diazonium salt solution.
- Add 1250ml of water, 192kg of soda ash and 89kg of NW acid into the coupling barrel, and stir to dissolve them all. Cool to 15°C, slowly add the above-mentioned diazonium salt solution within 2h, and the addition temperature does not exceed 25°C. After the addition was completed, pH=8.5 was determined and stirred for 30 min. The end point is the disappearance of the diazonium salt and the NW acid should be in slight excess. After reaching the end point, stir for another 3h. The temperature was raised to 65-70 ° C, and salt was added to salt out by volume 23%. filter. The filter cake is dried, pulverized and standardized to obtain 620kg of finished acid red B dye.
Consumption of raw materials (kg/t) NW acid (100%) 323 Sodium carbonate (98%) 2681, Sodium 4-aminonaphthalene sulfonate (100%) 340 Hydrochloric acid (31%) 369 Sodium nitrite (98%) 98 Refined salt 597.
Reference
- Carmoisine – PubChem
- WHO, 1983. Evaluation of certain food additives and contaminants. Linked from WHO listing here
- Klaus Hunger; Peter Mischke; Wolfgang Rieper; et al. (2005). “Azo Dyes”. Ullmann’s Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH.
Azo Rubine Supplier and Manufacturer
As a azo rubine supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best azo rubine raw materials to customers all over the world.
Over the years, relying on professional team experience and customer-centric team concept to meet customer needs in a timely manner, our company enjoys a high reputation in the world. At present, our company has served more than 6,000 customers and has established long-term cooperative relations with customers from many countries.
If you have a demand for azo rubine and related products, please contact our service staff Zhishang Chemical – White directly, and we will provide you with high-quality products at the best price.
Pre-Sales Service
* Prompt reply and 24 hours online, professional team to provide the best price and high-quality product.
* Sample testing support.
* Every batch of products will be tested to ensure its quality.
* The packing also can be according to the customers` requirement.
* Any inquiries will be replied to within 24 hours.
* We provide a Commerical Invoices, Packing Lists, Bills of loading, COA, Health certificates, and Origin certificates. If your markets have any special requirements, let us know.
After-Sales Service
* The fact of logistics information monitoring.
* Any questions about the product can be consulted at any time.
* Product has any problem can return.
Do you accept sample order?
We will make samples before mass production, and after the sample is approved, we’ll begin mass production. Doing 100% inspection during production, then doing random inspection before packing.
What’s your MOQ?
Our MOQ is 1kg. But usually we accept less quantities, such as 100g on the condition that the sample charge is 100% paid.
Is there a discount?
The different quantity has different discount.
HOW TO CONFIRM THE PRODUCT QUALITY BEFORE PLACING ORDERS?
You can get free samples for some products, you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests, we will manufacture the products according to your requests.
Do you supply product report?
Yes. We’ll give you product analysis report before shipping.
1. ≤50kg, Express delivery recommended, usually called DDU service;
2. ≤500kg, Air shipping recommended, usually called FOB, CFR, or CIF service;
3. >500kg, sea shipping recommended, usually called FOB, CFR, or CIF service;
4. For high-value products, please select air shipping and express delivery for safe.
Quality Control of Azo Rubine
