Iron oxide Yellow
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Keyword：Relyiron oxide
Detailed introduction
Iron oxide yellow, the main component is Iron oxide, the chemical formula is Fe₂ O · H₂ O, is a monohydrate of Iron oxide, also referred to as Iron yellow. The following is a detailed description of Iron oxide yellow:
1. basic information
English name:Iron oxide yellow
CAS No.: 51274-00-1
Molecular formula: Fe₂ O3 · H₂ O3
Molecular weight: 177.71
physicochemical properties of 2.
Appearance: from lemon yellow to brown powder.
Relative density: 2.44~3.60
Melting point: 350~400 ℃, above 150 ℃, the crystal water is decomposed, and above 400 ℃, most of it turns red.
Solubility: insoluble in water, alcohol, soluble in acid.
Fine powder: It is a crystalline Iron oxide hydrate. Due to different production methods and operating conditions, the degree of hydration is different, and the crystal structure and physical properties are very different.
Tinting strength, hiding power, light resistance, acid resistance, alkali resistance, heat resistance: all good.
3. preparation method
There are two main preparation methods of Iron oxide yellow:
ferrous sulfate oxidation method:
Sulfuric acid reacts with iron filings to form ferrous sulfate, and sodium hydroxide is added and air is introduced to oxidize to prepare crystal nuclei.
Ferrous sulfate and Iron filings are added to the crystal nucleus suspension, heated and blown into air for oxidation, and Iron oxide yellow is obtained by filter pressing, rinsing, drying and crushing.
aromatic nitrocellulose oxidation method:
Aromatic amino compounds can be produced at the same time, the specific reaction equation and conditions are more complex, involving a variety of raw materials and steps.
4. use
Iron oxide yellow has a wide range of applications in many fields:
Building Materials:
In all kinds of concrete prefabricated and building materials as pigments or colorants, directly into the cement application.
It is suitable for coloring all kinds of building ceramics and glass ceramics, such as face tiles, floor tiles, roof tiles, etc.
Paint:
Suitable for water-based interior and exterior wall coatings, powder coatings, etc.
Can also be used for oil paint, including epoxy, alkyd, amino and other primers and finishes.
Can also be used for toy paint, decorative paint, furniture paint, electrophoretic paint and enamel paint.
plastic and rubber:
Suitable for coloring of plastic products, such as thermosetting plastics and thermoplastics.
It is also used for coloring rubber products, such as automobile inner tubes, aircraft inner tubes, bicycle inner tubes, etc.
Other areas:
Widely used in artificial marble, terrazzo coloring.
Used as a pigment for watercolor, oil, paint, etc.
It can be used as an intermediate of Iron oxide pigments, such as Iron oxide red, Iron black, etc.
Can also be used for cosmetics, paper, leather coloring.
5. Security and Storage
Safety: inhalation of dust may cause pneumoconiosis, the maximum allowable concentration in the air is 5mg/m².
Storage: should be stored in ventilated, dry warehouse, packaging should be sealed, moisture-proof. Avoid high temperature, and acid, alkali isolation storage. According to the above storage conditions, the effective storage period of unpacked products is 3 years.
In summary, as an important inorganic pigment, Iron oxide yellow has a wide range of applications in many fields, and its unique physical properties and chemical stability make it an indispensable colorant for many industries.
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Tongling Rely Technology Co.,Ltd.
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Zip Code: 244000
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