​Manganese Violet color ( 30 g )

Manganese Violet

Manganese violet is a synthetic inorganic pigment known for its unique violet to reddish-violet hue. It is derived from manganese ammonium pyrophosphate, which gives it a rich and vibrant color that has applications in various fields such as paints, cosmetics, and plastics. Manganese violet is valued for its lightfastness, chemical stability, and non-toxic properties, making it suitable for both industrial and artistic purposes.

Chemical Composition:

• Chemical Formula: ${\text{MnNH}}_4{\text{P}}_2{\text{O}}_7$MnNH4P2O7 (manganese ammonium pyrophosphate).
• CAS Number: 10101-66-5 (for manganese violet pigment).
• Other Names: Manganese ammonium pyrophosphate, violet manganese, Ammonium manganese pyrophosphate.

Physical Properties:

• Color: Manganese violet ranges from a soft violet to reddish-violet shade, depending on the specific formulation and usage. The pigment has a moderate to high tinting strength.
• Form: Fine powder, typically supplied as a dry pigment for dispersion into paints or other media.
• Density: Approximately 2.4–2.6 g/cm³, depending on the particle size and specific formulation.
• Solubility: Insoluble in water and most organic solvents, which helps enhance the pigment's durability in different products.
• Stability: Manganese violet is highly stable and resistant to UV light, maintaining its vibrant color over time. It is also chemically stable and resistant to most acids and alkalis.
• Opacity: Typically semi-opaque, depending on the formulation and the thickness of the pigment layer.

Manufacturing Process:

Manganese violet is produced synthetically by combining manganese salts with ammonium and phosphorus compounds under controlled conditions. The reaction results in the formation of the purple manganese pyrophosphate structure.

The process generally includes:

1. Preparation of Precursors: Manganese salts, ammonium salts, and phosphorus compounds are mixed together.
2. Reaction: The mixture is heated to a specific temperature, typically between 600°C and 800°C, to form manganese ammonium pyrophosphate.
3. Purification and Grinding: The cooled material is purified, washed, and ground into a fine powder to obtain the final pigment.

The specific temperature, reactants, and process steps can influence the exact shade of violet produced, making the pigment available in different variants.

Uses and Applications:

Manganese violet is used in a variety of industries due to its distinctive violet hue, excellent durability, and lightfastness.

1. Paints and Coatings:

• Manganese violet is commonly used in artists' paints, particularly oil paints, watercolors, and acrylics. It is also used in industrial coatings where a rich violet color is desired.
• Usage rate: Typically 5% to 20% by weight, depending on the formulation and required color intensity. In artist-grade paints, higher concentrations may be used to achieve vibrant hues.

2. Plastics:

• Manganese violet is used to color plastics and synthetic materials, such as toys, containers, and automotive parts, where a long-lasting, stable color is necessary.
• Usage rate: Typically 1% to 5% by weight, depending on the material being colored and the strength of the color required.

3. Cosmetics:

• The pigment is used in cosmetics, including eyeshadows, blushes, lip products, and other makeup formulations, due to its non-toxic and vibrant color.
• Usage rate: 0.1% to 5%, depending on the formulation and product type.
• For cold process soap , mix 1 teaspoon with 1 tablespoon of lightweight oil.

4. Inks:

• Manganese violet is used in printing inks for commercial applications, providing a unique violet hue that is both stable and lightfast.
• Usage rate: Typically 5% to 15% by weight, depending on the desired opacity and color intensity.

5. Ceramics and Glass:

• It is used to color ceramic glazes and glass, giving a rich violet tone to these materials. It is particularly useful in decorative ceramic items and artistic glassware.
• Usage rate: 2% to 5% for ceramic glazes, depending on the desired effect.

6. Textiles:

• Manganese violet can also be used in the textile industry for dyeing and coloring fabrics, especially in high-quality or specialty items.
• Usage rate: Typically 1% to 3% by weight, depending on the fabric and the desired depth of color.

7. Construction Materials:

• The pigment is occasionally used to color concrete, tiles, and other construction materials, providing a vibrant violet tone.
• Usage rate: 0.5% to 2% by weight of the cement or aggregate in concrete applications.

Key Advantages:

• Lightfastness: Manganese violet is highly lightfast, meaning it does not fade easily when exposed to sunlight, making it suitable for both indoor and outdoor applications.
• Chemical Stability: The pigment is stable in a wide range of pH conditions and is resistant to most chemicals, ensuring longevity and durability in various products.
• Non-Toxicity: Manganese violet is considered non-toxic and safe for use in consumer products, including cosmetics and children's items.
• Heat Resistance: It has good heat resistance, making it suitable for high-temperature applications, such as ceramics and certain industrial coatings.
• Opacity: It provides good opacity, allowing it to cover underlying surfaces effectively in paints and coatings.

Percentage and Usage Rate:

The usage percentage of manganese violet depends on the type of application and the desired color intensity. Here are typical usage rates:

• Paints and Coatings: 5% to 20% of the total formulation, depending on the intensity of the color required.
• Plastics: 1% to 5% for coloring synthetic materials.
• Cosmetics: 0.1% to 5%, primarily for eyeshadows, blushes, and lip products.
• Inks: 5% to 15% of the ink formulation, depending on the desired color depth.
• Ceramics and Glass: 2% to 5% for ceramic glazes and glass products.
• Textiles: 1% to 3% for textile applications.
• Construction Materials (Concrete, Tiles, etc.): 0.5% to 2% by weight of the cement or aggregate.

Environmental and Safety Considerations:

Manganese violet is considered a non-toxic and environmentally friendly pigment. When handled according to proper safety guidelines, it does not pose significant risks to health or the environment. However, as with all chemicals and pigments, it is important to handle manganese violet with care to avoid inhalation of fine dust or contact with eyes, especially in industrial settings where large quantities are used.

Conclusion:

Manganese violet is a versatile, non-toxic inorganic pigment with excellent lightfastness, chemical stability, and heat resistance. It is used in a wide range of applications, including paints, plastics, cosmetics, ceramics, and textiles. The typical usage rate for manganese violet ranges from 0.1% to 20%, depending on the desired color strength and application. Its vibrant color and stability make it a popular choice for both industrial and artistic uses