Pigments & Colorants
REACH
Prussian blue
CAS Number
14038-43-8
EC Number
237-875-5
What is Prussian blue?
Prussian blue (CAS 14038-43-8), also sold as Pigment Blue 27 and Parisian blue, is a deep-blue synthetic iron complex used as a high-performance inorganic pigment.
Where is Prussian blue used?
- Textile dyeing and leather finishing: rich blue shades with strong substrate adhesion in batch and continuous processes
- Printing inks and packaging coatings: high tinting strength for deep saturation at lower pigment loadings
- Paper manufacturing: blue-toned specialty papers and colour-balance correction in white grades
- Personal care and cosmetics: stable, non-bleeding blue colorant in eyeshadows and mascaras
- It is a colorant where durability and consistency are procurement priorities.
Commercial specifications
- Fine particle grades for dispersion in aqueous and solvent-based systems
- Cosmetic-grade material meets purity requirements for regulated personal care markets
Other Names (Synonyms)
Prussian blue insoluble|Pigment Blue 27|Parisian blue|Iron(III) hexacyanoferrate(II)|Iron(III) ferrocyanide|Ferrocin|Ferric hexacyanoferrate(II)|Ferric hexacyanoferrate
What are the physical properties of Prussian blue?
Density 1.80 g/cm³
Appearance dark blue crystalline powder
Color Dark blue
Form Powder
Water Solubility practically insoluble
Log P -0.250 (est)
How is Prussian blue classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H312 Harmful in contact with skin
H332 Harmful if inhaled
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P317 Get emergency medical help.
Which trade and regulatory codes apply to Prussian blue?
HS Code 32041990
Storage Class 11 - Combustible Solids
WGK (Germany) 1