Ultramarine Blue

Description

Ultramarine Blue · CAS 57455-37-5 · Al6Na8O24S3Si6. UNII I39WR998BI. Color Additive Status: 73.2725; Color Additive Status: 73.50; Color Additive Status: 177.1680.

Identification

CAS Registry Number	57455-37-5
PubChem CID	71587188
Molecular formula	Al6Na8O24S3Si6
UNII (FDA)	I39WR998BI

Computed Descriptors

Molecular Weight	994.5
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	27
Rotatable Bond Count	0
Exact Mass	993.463108
Monoisotopic Mass	993.463108
Topological Polar Surface Area	581
Heavy Atom Count	47
Formal Charge	0
Complexity	19.1

Physical & Chemical Properties

Color Additive Status	73.2725
Color Additive Status	73.50
Color Additive Status	177.1680
Color Additive Status	177.2600
Color Additive Status	177.2800
Color Additive Status	178.3297

Physical description & handling notes

• Dry Powder; CBI; Dry Powder; Large Crystals; Liquid; Other Solid
• An inorganic, reddish-blue powder pigment and one of the three synthetic ultramarines; The structure is a "three-dimensional aluminosilicate lattice" containing ionic sulfur groups. Azure blue is "derived from china clay by calcination." [Ullmann]
• Ultramarine Blue
• Foods, Cosmetics
• Animal feed. Externally applied cosmetics including eye area use.
• 3 - Petitioned for use after the 1960 amendments; never provisionally listed.

Regulatory Status

Regulatory & Food Contact	FDA Regulatory Status of Color Additives: Foods, Cosmetics FDA Substance added to food: COLOR OR COLORING ADJUNCT FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS CIR / INCI: Cosmetic colorant
GHS notification summary	100% (321 / 321)

GHS Hazard Classification

GHS notification summary	100% (321 / 321)

Documented Uses

• During the Middle Ages, ultramarine was used by artists as the blue from over the sea. It was derived from the semiprecious stone, lapis lazuli, imported from Afghanistan. Since 1828 when it was first synthesized, the supply of the pigment has become abundant. Ultramarine pigments are used in plastics, paints, printing inks, paper, artist colors, laundry detergents (optical brightener), and toys. [Ullmann]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• EPA Safer Chemical Functional Use Classes -> Colorants
• Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern
• Not Known or Reasonably Ascertainable
• Information on 23 consumer products that contain Ultramarine blue in the following categories is provided:

Synonyms

Ultramarine Blue; 57455-37-5; I39WR998BI; C. I. 77007; RefChem:917800; DTXSID80892167; 611-533-9; 691-383-9; Azure blue; UNII-I39WR998BI; Lazurite; Ultramarine; LAZURITE [MI]; ULTRAMARINE [MI]; 3516 ULTRA BLUE; 3522 ULTRA BLUE

Frequently Asked Questions

What are the CAS number and molecular formula of Ultramarine Blue?

CAS 57455-37-5; molecular formula Al6Na8O24S3Si6; molecular weight — g/mol.

What other names is Ultramarine Blue known by?

Ultramarine Blue, 57455-37-5, I39WR998BI, C. I. 77007, RefChem:917800, DTXSID80892167.

What is the regulatory status of Ultramarine Blue?

Documented regulatory listings: FDA Regulatory Status of Color Additives: Foods, Cosmetics; FDA Substance added to food: COLOR OR COLORING ADJUNCT; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Ultramarine Blue classified as hazardous?

100% of GHS notifications report no hazard classification (321 of 321).

What are the key physical properties of Ultramarine Blue?

Color Additive Status: 73.2725; Color Additive Status: 73.50; Color Additive Status: 177.1680; Color Additive Status: 177.2600.

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.