​Iron Oxide Red color (50 g )

Iron Oxide Red

Iron oxide red, also known as Pigment Red 101, is a synthetic inorganic pigment widely used for its rich red color, good opacity, and permanence. It is a type of iron oxide (Fe2O3) and is created through controlled oxidation of iron. It’s one of the most commonly used red pigments in the world, and it provides a safe and stable colorant for various applications.

Chemical Composition:

• Chemical Formula: Fe2O3
• CAS Number: 1309-37-1
• Other Names: Red Iron Oxide, Venetian Red, Indian Red, Mars Red.

Physical Properties:

• Color: Deep red to reddish-brown (varies depending on formulation)
• Form: Fine powder
• Density: 5.2 - 5.3 g/cm³
• Stability: Extremely stable; resistant to UV degradation and high temperatures.

Manufacturing Process:

Iron oxide red is typically produced through one of the following methods:

1. The Precipitation Method: In this method, iron salts (like iron sulfate or iron chloride) are reacted with an alkali (like sodium hydroxide), followed by heat treatment, leading to the formation of iron oxide.
2. The Calcination Method: Iron compounds like iron hydroxide or iron sulfate are heated to a high temperature, causing them to undergo a transformation into iron oxide (Fe2O3).

Uses and Applications:

Iron oxide red is highly versatile and is used across various industries, including:.

1. Ceramics:
   • Iron oxide red is used in ceramics and pottery to produce rich red and brown shades.
   • Commonly applied as a glaze or as part of the ceramic body.
   • The usage rate can vary between 2% and 10% depending on the application.
2. Cosmetics:
   • Used in the formulation of makeup products such as blush, eyeshadows, and lipsticks.
   • Typical usage rate: 1% to 5%, ensuring safety and aesthetic appeal.
   • Mix 1/8 to 1/2 tea spoon of the oxide powder with distilled water for every 500 grams of the soap oils.
3. Construction Materials:
   • Often used in concrete, mortar, and other construction materials for coloring.
   • Common usage rate in concrete: 0.5% to 3% by weight of the cement.

Key Advantages:

• Durability: Highly durable and resistant to weathering, making it ideal for outdoor applications.
• Non-toxic and Environmentally Friendly: Considered safe for human health and environmentally friendly compared to some organic pigments.
• Lightfastness: Iron oxide red exhibits excellent lightfastness, meaning it does not fade over time when exposed to sunlight.
• Heat Resistance: It can withstand high temperatures, making it ideal for use in products that will be exposed to heat.

Percentage and Usage Rate:.

• Ceramics: 2-10% depending on the glaze or body composition.
• Cosmetics: 1-5% for safe and attractive color.
• Construction Materials (Concrete/Mortar): 0.5-3% based on desired color..

Environmental and Safety Considerations:

Iron oxide red is considered non-toxic and environmentally safe, with no known hazardous effects when used according to safety guidelines. It is a stable pigment that does not degrade into harmful substances over time.

Conclusion:

Iron oxide red is a widely used inorganic pigment known for its stable, permanent red color. It finds applications in a variety of industries, including paints, coatings, ceramics, and cosmetics. With good lightfastness, weather resistance, and non-toxicity, it continues to be a popular choice for both commercial and industrial purposes.