CI 77000 is a chemical compound, a synthetic white dye composed mainly of aluminum. It is known as Pigment Metal 1 or Aluminum Powder. It is an ingredient included in the list of European food additives as colorant E173.
CI 77000, also known as aluminum powder, is a metallic pigment used in a variety of cosmetic and industrial applications.
The main raw materials for its production are:
- Aluminum. A light and malleable metal that serves as the base for the production of CI 77000. Aluminum is known for its reflective properties and resistance to corrosion, but it is also known to be dangerous when it enters the human body. Link below:
https://www.tiiips.com/m/tiiips/home?action=viewObject&oID=25256
- Acids and Chemical Reagents. Used to treat and modify aluminum, enhancing its adherence, stability, and compatibility with other components in the final products.
Industrial Chemical Synthesis of CI 77000
- Production of Aluminum Powder Aluminum is first transformed into powder through mechanical processes such as grinding or atomization.
- Chemical Treatment: The aluminum powder is then treated with various acids and chemical reagents to improve its properties, such as corrosion resistance and adherence.
- Purification: After treatment, the powder is purified to remove impurities and ensure the quality of the pigment.
- Quality Control and Packaging: CI 77000 undergoes quality checks to ensure it meets the required standards. After quality control, it is packaged for use in cosmetics (like eyeshadows, nail polishes, and makeup products), paints, coatings, and other industrial applications.
What it is used for and where
Cosmetics
Dye to avoid. It is an ingredient that makes the final product more attractive from an aesthetic point of view, but may pose a potential risk to human health with undesirable side effects especially when used continuously as it can be absorbed through the skin or mucous membranes.
Safety
Aluminium can interfere with different biological processes (cellular oxidative stress, calcium metabolism, etc.), so it can induce toxic effects in different organs and systems, and the nervous system is the main target of its toxicity.
CAS: 7429-90-5
Chemical name Aluminium
Molecular Formula Al
EC number 231-072-3
UNII KZJ3T010RQ
DTXSID3040273
CI 77000 
