We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is Prussian Blue?

Mary McMahon
Updated May 23, 2024
Our promise to you
InfoBloom is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At InfoBloom, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Prussian blue is a pigment that has been manufactured since 1704, when Heinrich Diesbach discovered it almost by accident in Berlin, which was then located in Prussia. This pigment is incredibly colorfast, and it was the first truly artificially created pigment to reach the market. The deep blue tone and colorfastness rapidly made it immensely popular in Europe and beyond, and it continues to be used today. There are other uses for the pigment as well, ranging from laundry bluing to treatment of people who have been exposed to certain radioactive elements.

Pure Prussian blue is a very deep, rich blue. It can be mixed with other pigments to create different shades, or used on its own. Painters, woodcutters, and textile artists all work with the color, and it was also historically used to manufacture blueprints. Many art supply stores stock it, along with an assortment of related colors, like Chinese blue, which is a blend of Prussian blue and other pigments.

In laundry bluing, Prussian blue was historically added in trace amounts to laundry water to make yellowed whites look more crisp. In microscopy, it is often used as a stain to look for traces of iron, and the chemical properties of the pigment are also utilized in chemistry. Several companies make various versions of that are specifically targeted at these uses; the blue in artists' pigments, for example, has a slightly different formula than the ferric ferrocyanide used in microscopy.

Medical professionals may also prescribe Prussian blue for use in treating people who have been internally exposed to cesium or thallium. Internal exposure can happen through ingestion or inhalation, and it can be quite dangerous when not quickly treated. The pigment binds to these elements, preventing the body from absorbing them and expressing them quickly through the intestines to minimize exposure. Prussian blue should not be taken orally without the direction of a medical professional, as it is very important to calculate an accurate dosage and to take a version which has been specifically designed for this use.

The most common side effect of this treatment is constipation. One of the more intriguing side effects is blue stool, caused by the expression of the pigment from the body. Some patients also end up with blue mouths if the capsules crack open while they take them.

InfoBloom is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a InfoBloom researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments
Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
InfoBloom, in your inbox

Our latest articles, guides, and more, delivered daily.

InfoBloom, in your inbox

Our latest articles, guides, and more, delivered daily.