Zhishang Chemical

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Zhishang Chemical

Sunset Yellow CAS 2783-94-0

Molecular Formula: C16H13N2NaO7S2

Formula Weight: 432.4

ZSpharmac: Sunset Yellow Supplier

Product Name: Sunset Yellow
CAS No: 2783-94-0
Purity: 99%

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Basic Info

Product Name:Sunset Yellow
Other Names:Sunset Yellow FCF
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:Orange-Red Crystals
EINECS No.:220-491-7
Storage:Amber Vial, Refrigerator
Provide:Sunset Yellow MSDS;
Sunset Yellow COA

What is Sunset Yellow?

Sunset yellow is also known as orange, sunset yellow, and sunset yellow. Edible synthetic coloring, orange-red powder or granules, odorless, insoluble in oil, slightly soluble in ethanol, easily soluble in water, glycerin, propylene glycol, orange in aqueous solution, good in light resistance, heat resistance and acid resistance, in citric acid and tartaric acid Stable, the color turns darker when it encounters alkali, with reddish brown, fades when restored, and has high safety in use. Used as a food coloring agent, it can be used for pastry coloring, and the usage limit is 0.1g/kg. It is obtained by diazotizing p-aminobenzenesulfonic acid and 2-naphthol-6-sodium sulfonate, salting out the product with sodium chloride, and refining.

Sunset Yellow Property

Melting point 390°C (dec.)
Boiling point 162.4°C
density 0.474-0.588[at 20℃]
storage temp. Amber Vial, Refrigerator
solubility Soluble in water, ethanol
Colour Index 15985
form crystals
pka0[at 20 ℃]
color Orange-red
Water Solubility 5-10 g/100 mL at 24 ºC


Sunset Yellow Uses

  1. Sunset Yellow is made use of as a food coloring agent, which can be made use of in rice, flour items, candies, biscuits as well as breads according to laws in my country, with a maximum usage of 5.0 g/kg.
  2. Sunset Yellow is used in the rubber industry to make enhancing agents and fillers for all-natural rubber and butyl rubber. It can offer vulcanized rubber better tensile toughness, elongation at break and wear resistance. It is mainly utilized for the walk of massive design tires mainly constructed from all-natural rubber as well as various off-road tires. It can also be made use of for carcass and also sidewalls, as well as can likewise be made use of for high-strength conveyor belts, cold-resistant rubber products, as well as boring components. In the chemical as well as light sector, it is used as a filler for paints, inks, enamel and also plastic products.
  3. Sunset Yellow is mostly used as a resources for dry batteries, and also is likewise made use of in conductive and antistatic rubber products.
  4. Sunset Yellow is used for loading as well as reinforcement of OTR tire treads, steel belts, conveyor belts, commercial seals as well as products.
  5. Sunset Yellow is mostly used for support of tire belts, sidewalls, solid tires, drum external layers, rubber hose surfaces, industrial rubber products, and also car tire footsteps.
    Carbon Black Powder is utilized as a pigment in cosmetics such as eyeliner, mascara and also lipstick. It is generated by the insufficient burning of carbon-based products such as coal tar and has actually been linked to raised cancer cells prices and also adverse impacts on body organs.

Sunset Yellow Production Method

Add 11-12 times the amount (mass) of p-aminobenzenesulfonic acid to water at 60-65°C, then slowly add sodium carbonate to dissolve it completely, filter, cool to 0-5°C, and then add p-aminobenzenesulfonic acid 1.5 to 1.8 times the amount (mass) of hydrochloric acid, stir evenly and let it stand still to precipitate fine 1-naphthylamine-4-sulfonic acid olefin crystals, and cool to below 5°C. Slowly add 1:2 (mass) sodium nitrite solution at 3-5°C for diazotization to obtain diazonium solution. After the reaction is completed, the feed solution is strongly acidic (blue) to the Congo red test paper. Stir and dissolve 2-naphthol-6-sodium sulfonate in 20 times the amount (mass) of water at 75-80°C, then add part of sodium carbonate (1/5 of the total amount), dissolve and filter. Put the filtrate into the reaction kettle, then add the rest of the Chemicalbook sodium carbonate, stir and cool to 5-8°C; then slowly add the diazonium solution at 10-15°C and the pH value is 8-9 to carry out the coupling reaction for several hours. After the reaction is completed (2-naphthol-6,8-sodium disulfonate is slightly excessive), heat it up to 50-60°C, add refined sodium chloride, stir, let it cool down to room temperature naturally, and let it stand to precipitate crystals; Stir and dissolve the crystals in 15 times the amount (mass) of clean water at 70°C, add an appropriate amount of sodium carbonate to make the solution slightly alkaline, add refined salt after filtration, stir and adjust the pH value to 6.5-7.0 with hydrochloric acid, stand for crystallization, and separate Dried to get the finished product.
Preparation of Sunset Yellow Aluminum Lake
Prepare aluminum hydroxide from aluminum salts such as aluminum chloride and aluminum sulfate and alkalis such as sodium carbonate, then add sunset yellow aqueous solution and precipitate to obtain the product.

Safety of Sunset Yellow

The authoritative organization for the safety evaluation of food additives – the Joint Expert Committee on Food Additives of the World Food and Agriculture Organization and the World Health Organization has evaluated the safety of sunset yellow, and believes that the daily allowable intake of this additive is 0-2.5mg/kg . For a food additive, the allowable daily intake is the estimated value of the allowable daily intake for a person who ingests a food additive without significant health hazards based on the body weight. For example: based on the standard calculation of a person with a body weight of 60kg, the daily allowable intake of sunset yellow is 2.5mg/kg, and the daily intake of sunset yellow for this person is: 2.5mg×60kg=150mg.

The allowable daily intake of food additives and the possible intake of the human body are the basis for food safety risk assessment and the formulation of the Hygienic Standards for the Use of Food Additives. That is to say, the scope and amount of use of sunset yellow stipulated in the “Hygienic Standards for the Use of Food Additives” is based on the allowable daily intake of sunset yellow and the possible daily intake of consumers before evaluating the risk. Based on the assessment, it is able to guarantee the health of consumers.

According to my country’s national standard GB 2760-2014 “National Food Safety Standards – Standards for the Use of Food Additives”, the maximum usage limit of sunset yellow in carbonated beverages, fruit and vegetable juice beverages is 0.1g/kg. In view of the fact that most residents in our country usually mainly prepare meals at home, so as long as they do not eat regularly and in large quantities on the market, the sunset yellow food that exceeds the standard will generally not cause significant harm to human health.

About Products:
If you need Sunset Yellow, the cosmetic raw material, please contact our service staff directly, we will provide you with high-quality products at the best price.
As an experienced Sunset Yellow manufacturer and supplier, ZSpharmac will provide Sunset Yellow raw materials to customers all over the world for a long time.
Over the years, the company has been adhering to the spirit of “integrity management, strict quality control, customer first”, and has won unanimous praise from domestic and foreign customers.

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

Help China Chemicals to benefit the happiness of human life
Become the most trusted chemical supplier in the world
Striver – oriented, enrich employees, customer first, deep service, seek development
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Cosmetic raw materials
  • Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic additives)
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. 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 sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



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.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

Get Sunset Yellow Quotation