Pigment Blue 27

Description

Pigment Blue 27 · CAS 12240-15-2 · C18Fe7N18. Solubility: In water, 6 mg/mL at 25 °C; Density: 1.80 g/cu cm; Color Additive Status: 73.1299.

Identification

CAS Registry Number	12240-15-2
PubChem CID	2724251
Molecular formula	C18Fe7N18
IUPAC name	tris(iron(2+));tetrakis(iron(3+));octadecacyanide

Computed Descriptors

Molecular Weight	859.2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	36
Rotatable Bond Count	0
Exact Mass	859.59988
Monoisotopic Mass	859.59988
Topological Polar Surface Area	428
Heavy Atom Count	43
Formal Charge	0
Complexity	127

Physical & Chemical Properties

Solubility	In water, 6 mg/mL at 25 °C
Density	1.80 g/cu cm
Color Additive Status	73.1299
Color Additive Status	73.2299

Physical description & handling notes

• Purple solid; Mostly soluble in water (6 g/L); [Merck Index] Deep blue powder; [MSDSonline]
• Dark blue powder
• Purple powder
• Relatively strongly colored
• Mostly insoluble in hot or cold water. 6 mg/mL at 25 deg C
• Insoluble in dilute acid, organic solvents

Regulatory Status

Regulatory & Food Contact	FDA Regulatory Status of Color Additives: Drugs, Cosmetics CIR / INCI: Cosmetic colorant
GHS notification summary	86% (306 / 356)

GHS Hazard Classification

GHS notification summary	86% (306 / 356)
Reported hazard statements	H312 (10.1%), H332 (10.1%)

Documented Uses

• Used as a pigment in printing inks, paints, alkyd resin enamels, linoleum, leather, carbon papers, typewriter ribbons, rubbers, plastics, artists' colors, cosmetics (eye shadow), and paper dyeing; Also used in fertilizer, baked enamel finishes, hydrogen sulfide scavengers, and antidotes for radiocesium and thallium poisoning; [HSBD]
• Pulp and Paper Processing [Category: Industry]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Leather Tanning and Processing [Category: Industry]
• Leather crafting [Category: Hobbies]
• Ferric hexacyanoferrate ... also known as insoluble Prussian blue (PB), is the active pharmaceutical ingredient (API) of Radiogardase which is the first approved drug product (DP) for treatment of thallium and radiocesium poisoning.

Synonyms

FERRIC FERROCYANIDE; Iron(III) ferrocyanide; iron(III) hexacyanoferrate(II); Prussian blue insoluble; Ferrocin; Berlin Blue; Preussischblau; Ferric hexacyanoferrate; Berliner Blau; Turnbulls Blau; CHEBI:30069; iron(3+) hexacyanoferrate(4-); iron(III) hexacyanidoferrate(II); iron(3+) hexacyanidoferrate(4-); FERRIC HEXACYANOFERRATE(II); Fe4(Fe(CN)6)3

Frequently Asked Questions

What are the CAS number and molecular formula of Pigment Blue 27?

CAS 12240-15-2; molecular formula C18Fe7N18; molecular weight — g/mol.

What other names is Pigment Blue 27 known by?

FERRIC FERROCYANIDE, Iron(III) ferrocyanide, iron(III) hexacyanoferrate(II), Prussian blue insoluble, Ferrocin, Berlin Blue.

What is the regulatory status of Pigment Blue 27?

Documented regulatory listings: FDA Regulatory Status of Color Additives: Drugs, Cosmetics; CIR / INCI: Cosmetic colorant.

Is Pigment Blue 27 classified as hazardous?

86% of GHS notifications report no hazard classification (306 of 356).

What are the key physical properties of Pigment Blue 27?

Solubility: In water, 6 mg/mL at 25 °C; Density: 1.80 g/cu cm; Color Additive Status: 73.1299; Color Additive Status: 73.2299.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.