Berlin Blue

 “Berlin Blue” usually refers to Prussian Blue, the deep blue pigment discovered in Berlin in the early 18th century. Here’s a quick breakdown:

• Discovery: Around 1706 by the Berlin color maker Johann Jacob Diesbach, who accidentally created it while trying to make a red pigment. He was working with iron salts and contaminated potash (which contained animal blood byproducts rich in nitrogen), leading to the formation of a new blue compound.

• Chemical nature: Iron(III) hexacyanoferrate(II), a coordination complex.

• Uses:

  • Historically, one of the first synthetic pigments widely used in paints, textiles, and inks.

  • Important in art history—used by painters from the 18th century onward.

• In medicine, used as an antidote for certain types of heavy metal poisoning (like thallium and radioactive cesium).

•                                Berlin Blue: Antidote For Poisoning

Current Events

  In 2025, German Language Day (Tag der deutschen Sprache) is on Saturday, 13 September 2025.

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