ALIZARINE GREEN

Description

ALIZARINE GREEN · CAS 128-80-3 · C28H22N2O2. UNII 4QP5U84YF7. Color/Form: Solid at 20 °C; Melting Point: 218 °C; Density: 0.45 g/mL.

Identification

CAS Registry Number	128-80-3
PubChem CID	31416
Molecular formula	C28H22N2O2
IUPAC name	1,4-bis(4-methylanilino)anthracene-9,10-dione
UNII (FDA)	4QP5U84YF7

Computed Descriptors

Molecular Weight	418.5
XLogP3	7.8
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	4
Exact Mass	418.168127949
Monoisotopic Mass	418.168127949
Topological Polar Surface Area	58.2
Heavy Atom Count	32
Formal Charge	0

Physical & Chemical Properties

Color/Form	Solid at 20 °C
Melting Point	218 °C
Density	0.45 g/mL
Color Additive Status	74.1206
Color Additive Status	74.2206
Color Additive Status	74.3206
Color Additive Status	81.10
Color Additive Status	81.30
Color Additive Status	82.1206

Physical description & handling notes

• Dark violet solid; [Merck Index]
• Dark burgundy
• Dark violet needles
• In 2-methoxymethanol, 2 mg/mL; in ethanol 0.3 mg/mL
• Soluble in 3.4 g/100 mL alcohol at 25 °C. Soluble in hydrochloric and sulfuric acid. Sparingly soluble in methanol, ethyl ether.
• Slightly soluble in acetone, ethyl acetate, mineral oil, oleic acid, stearic acid. Soluble in benzene, toluene.

Regulatory Status

Regulatory & Food Contact	FDA Regulatory Status of Color Additives: Drugs, Cosmetics, Devices CIR / INCI: Cosmetic colorant; Hair dyeing
GHS notification summary	97.8% (2848 / 2913)

GHS Hazard Classification

GHS notification summary	97.8% (2848 / 2913)

Documented Uses

• Used for sutures; Approved for external drugs and cosmetics; [Merck Index]
• Coloring fats, oils, waxes, hydrocarbon solvents, hydrocarbon-base wood stains, cellulose acetate, polystyrene and soap, and in the preparation of oleic or stearic rotogravure inks.
• Coloring contact lenses; ... coloring polyethylene terephthalate surgical sutures, including sutures for ophthalmic use; ... coloring polyglycolic acid surgical sutures with diameter greater than U.S.P. size 8-0, including sutures for ophthalmic use; ... coloring poly(glycolic acid-co-trimethylene carbonate) sutures (also referred to as 1,4-dioxan-2,5-dione polymer with 1,3-dioxan-2-one) for general surgical use; and ... coloring polymethylmethacrylate support haptics of intraocular lenses.
• Military smoke dye grenades used for communication
• Cosmetics -> Cosmetic colorant; Hair dyeing
• Information on 10 consumer products that contain D&C Green #6 in the following categories is provided:

Synonyms

Cyanine Green G Base; D.C. Green No. 6; 1,4-di-4-toluidinoanthraquinone; RefChem:416470; Solvent green 3; 128-80-3; Quinizarin Green SS; 1,4-Bis(p-tolylamino)anthracene-9,10-dione; C.I. Solvent Green 3; Waxoline Green G; Sudan Green 4B; Quinazarin green; Arlosol Green B; Organol Green J; Quinizarine Green Base; Arlosol Green BS

Frequently Asked Questions

What are the CAS number and molecular formula of ALIZARINE GREEN?

CAS 128-80-3; molecular formula C28H22N2O2; molecular weight — g/mol.

What other names is ALIZARINE GREEN known by?

Cyanine Green G Base, D.C. Green No. 6, 1,4-di-4-toluidinoanthraquinone, RefChem:416470, Solvent green 3, 128-80-3.

What is the regulatory status of ALIZARINE GREEN?

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

Is ALIZARINE GREEN classified as hazardous?

97.8% of GHS notifications report no hazard classification (2848 of 2913).

What are the key physical properties of ALIZARINE GREEN?

Color/Form: Solid at 20 °C; Melting Point: 218 °C; Density: 0.45 g/mL; Color Additive Status: 74.1206.

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.