Product: Ultramarine Blue
Rchem Ultramarine Blue is a high-purity, synthetic inorganic pigment, presented as a fine, brilliant dark blue powder. This iconic pigment, known artistically as “true royal blue,” is a complex sodium aluminosilicate containing polysulfide chromophores. Renowned for its vibrant masstone, exceptional lightfastness, and chemical inertness, it is a cornerstone ingredient in color cosmetics, personal care products, and industrial applications for delivering intense, clean blue shades that are impossible to achieve with other inorganic pigments .
Category: powder
Description
Key Features & Benefits:
● Excellent natural thickening agent with high viscosity at low concentrations
● Effective stabilizer for emulsions and suspensions in various formulations
● Clean-label ingredient suitable for organic and natural product formulations
● Improves texture and shelf life in food products
● Enhances viscosity and stability in cosmetic formulations
● Cost-effective alternative to synthetic thickeners and stabilizers
Technical Specifications Table:
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Chemical Formulae
Frequently Asked Questions:
Is Ultramarine Blue safe to use in cosmetics?
Yes, it is generally considered a non-hazardous and safe pigment for cosmetic use . However, regulatory status varies by region and application. Notably, while approved for general use by the FDA, it is not permitted for use in lip products in the United States, though it is allowed in Japan and the EU . Always verify compliance with your target market's local regulations.
This is due to its sensitivity to acids. If you add Ultramarine Blue to a product that is acidic (low pH) or if it comes into contact with acidic ingredients, the pigment structure breaks down. This reaction releases hydrogen sulfide gas (rotten egg smell) and destroys the blue color, usually leaving a greenish or white residue . Ensure your final formula's pH is neutral or alkaline (above pH 7) to maintain color stability.
Why does Ultramarine Blue turn green or white?
Yes, absolutely. Cold process soap is highly alkaline (pH ~9-11). Ultramarine Blue is exceptionally stable in alkaline environments, making it a favorite for producing brilliant blue soaps . It will not bleed or morph in the saponification process.
Can I use Ultramarine Blue in cold process soap?
While both are blue, they are chemically distinct. Ultramarine Blue is an inorganic pigment (mineral-based) known for its true red-shade blue and high alkali resistance. Phthalo Blue is an organic pigment (carbon-based) known for being incredibly strong (high tinting strength) and having excellent chemical stability across a wider pH range. Ultramarine is generally preferred for eye shadows and soaps due to its safety profile and specific color hue, while Phthalo is often used in paints and industrial coatings.
What is the difference between Ultramarine Blue and other blue pigments like Phthalo Blue?
Handling: Avoid inhaling the dust. Use a dust mask, gloves, and safety goggles. It is a fine powder that can stain clothing and surfaces . Formulation: Be mindful of temperature; it is stable up to 200°C . It is insoluble, so it needs to be thoroughly dispersed in the oil phase of your emulsion or dry blended into powders. Storage: Store in a cool, dry place, protected from light . Keep containers tightly sealed and never store next to acid components . Always refer to the Safety Data Sheet (SDS) for comprehensive handling, safety, and first-aid information.
