Zhishang Chemical

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Zhishang Chemical

Iron Oxide Yellow CAS 51274-00-1

Molecular Formula: Fe2O3

Formula Weight: 159.69

ZSpharmac: Iron Oxide Yellow Supplement

Product Name: Iron Oxide Yellow
CAS No: 51274-00-1
Purity: 99%

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Basic Info

Product Name:Iron Oxide Yellow
Other Names:Pigment Yellow 42
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:Yellow Powder
EINECS No.:257-098-5
Provide:Iron Oxide Yellow MSDS;
Iron Oxide Yellow COA

What is Iron Oxide Yellow?

On an around the world scale, iron oxide is the 2nd biggest not natural pigment after titanium dioxide and the biggest tinted not natural pigment. Iron oxide pigments primarily consist of 4 categories of iron oxide red, yellow, black as well as brownish based upon iron oxides. Iron Oxide Yellow, furthermore referred to as iron oxyhydroxide (FeOOH), will absolutely dry and also decay and likewise redden at about 177 ° C, so the application of regular iron yellow pigments in heat applications such as plastic processing as well as baking layers is restricted. Iron Oxide Yellow pigment can enhance its temperature level resistance with surface area layer, subsequently increasing the application area of iron oxide yellow pigment.

The chemical formula of Iron Oxide Yellow (additionally known as hydroxy iron) is α-Fe2O3 · WATER or α-FeOOH.It is a needle-like structure as well as is a yellow powder with a particle dimension of less than 0.1 μm. It has good dispersibility in transparent media. The iron-based pigment has solid tinting toughness, high hiding power, insoluble in alkali, and a little soluble in acid. Synthetic Iron Oxide Yellow has the features of light resistance, good dispersibility, non-toxic, odor-free, and not easy to be taken in by the human body. It is commonly used in coverings, plastics, inks, as well as pharmaceutical sectors.

Iron Oxide Yellow Property

Melting point 1538 °C
density 5.24
Fp >230 °F
storage temp. Room Temperature
form Powder
color yellow


Iron Oxide Yellow Uses

1. Iron Oxide Yellow pigments are made use of as pigments or colorants for prefabricated parts and also structure products in numerous kinds of concrete, as well as are directly moved into cement for application. Numerous interior and also outside tinted concrete surface areas, such as walls, floors, ceilings, columns, verandas, sidewalks, parking lots, staircases, stations, etc; various architectural porcelains and also glazed ceramics, such as face floor tiles, floor tiles, roof covering tiles, panels, terrazzo, mosaic floor tiles, artificial marble, etc

2. Iron Oxide Yellow pigment is suitable for different paint coloring and also defense substances, including water-based interior and exterior wall surface coatings, powder finishes, and so on; additionally suitable for oil-based paints consisting of epoxy, alkyd, amino and other guides and also topcoats; additionally Can be used in plaything paints, ornamental paints, furniture paints, electrophoretic paints and also enamels.

3. Iron Oxide Yellow pigment is suitable for the coloring of plastic items, such as thermosetting plastics as well as thermoplastics, and also the coloring of rubber items, such as automobile internal tubes, aircraft internal tubes, bike internal tubes, etc

4.Commonly utilized in the coloring of made marble as well as likewise terrazzo in the structure and building market. It is a pigment for watercolor, oil paint, paint, rubber, etc. Made use of as an intermediate of iron oxide pigments, such as iron oxide red, iron black, and so forth.

Preparation of Iron Oxide Yellow

How to Make Iron Oxide Yellow

Technique 1: Ferrous sulfate oxidation technique
Sulfuric acid reacts with iron filings to create ferrous sulfate, sodium hydroxide is added as well as air is oxidized to prepare crystal cores, then ferrous sulfate as well as iron filings are added to the crystal core suspension, heated as well as blown into air for oxidation, as well as subjected to pressure filtration, washing, Dry as well as shatter to obtain yellow iron oxide. Its reaction equation is as follows:

Fe+ H2SO4 → FeSO4+ H2 ↑.

FeSO4 +2 NaOH → Fe( OH) 2+ Na2SO4.

4Fe( OH) 2+ O2 → 4FeOOH +2 WATER.

H2SO4+ Fe +7 H2O → FeSO4 · 7H2O+ H2 ↑. FeSO4 · 7H2O+ O2 → 2Fe2O3 · H2O ↓ +4 H2SO4 +2 WATER. Response problems: 74g of iron filings were contributed to 1000ml of 15% sulfuric acid to respond until the iron filings vanished to produce ferrous sulfate with a concentration of about 200g/L. Add enough 30% salt hydroxide to the ferrous sulfate option prepared over, stir continuously to convert 40% of the iron right into ferrous hydroxide [Fe( OH) 2], and ventilate at 30-35 ° C, to ensure that Fe is oxidized to Fe to develop crystal core. After that add 90g/L of iron filings to it to produce 7g/L of centers and also 40g/L of ferrous sulfate, continue to warm to 85 ° C, air-oxidize at a speed of 600L/h for 64h, after that filter, laundry, drying as well as crushing to acquire hydrated iron oxide yellow.

Method 2: Aromatic nitro compound oxidation approach Aromatic amino substances can be generated at the same time. Its response equation is as follows:.

Fe+ WATER+ R-NO2 → Fe2O3 · WATER+ R-NH2.

The reaction conditions are as complies with: 560 parts of water, 36.5 parts of 32% hydrochloric acid, 160 parts of iron powder and also 10 parts of light weight aluminum powder are included in the reaction pot. 1460 parts of a liquid service having 253 parts of 5-nitronaphthalenesulfonic acid and 8-nitronaphthalenesulfonic acid were included in the reaction pot for 16-24 hrs, the pH of the aqueous service of naphthalenesulfonic acid was 6, as well as the temperature level was 80-85 ° C. The temperature level in the reaction pot is 95 ~ 100 ℃, and also the pH value is 6 ~ 6.5. Under this problem, react for 2h, include 8 parts of 25% ammonia water, even more react for 4h, filter, clean the filter cake three times with 560 parts of water, and then filter the filter cake after cleaning with water. The cake is combined with 1000 parts of water, heated at 95-100 ° C, included with 45 parts of 32% hydrochloric acid, mixed for 2 hrs, filtered, washed with water till acid-free, dried to acquire 160 parts of iron oxide yellow pigment, as well as aminonaphthalenesulfonic acid can be obtained at the same time, the return is 96%.

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: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food 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.

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