几内亚绿 B (C.I. 42085)

Description

guinea green B (C.I. 42085) · CAS 4680-78-8 · C37H35N2O6S2.Na. UNII 4L2574620F. Melting Point: 255 °C (decomposes); Solubility: In water, 30 mg/mL; Color Additive Status: 81.30.

Identification

CAS Registry Number	4680-78-8
PubChem CID	20803
Molecular formula	C37H35N2O6S2.Na
IUPAC name	sodium 3-[[N-ethyl-4-[[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]-phenylmethyl]anilino]methyl]benzenesulfonate
UNII (FDA)	4L2574620F

Computed Descriptors

Molecular Weight	690.8
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	9
Exact Mass	690.18342347
Monoisotopic Mass	690.18342347
Topological Polar Surface Area	137
Heavy Atom Count	48
Formal Charge	0
Complexity	1250

Physical & Chemical Properties

Melting Point	255 °C (decomposes)
Solubility	In water, 30 mg/mL
Color Additive Status	81.30

Physical description & handling notes

• C.i. acid green 3 appears as a dull dark green powder. Used as a dye for silk or wool and biological stains.
• Wet Solid
• Dark green solid; [Merck Index]
• A dull, dark green powder or bright crystalline solid
• Maroon-purple powder
• A dull, dark green powder or a bright, crystalline solid

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: Use unspecified COLOUR: Food Additives FD&C GREEN NO. 1--DELISTED

Documented Uses

• Used to dye wool, silk, leather, and paper; Also used in wood stains, biological stains, and, indicators; Used as a cosmetic in Western Europe (no contact with mucous membranes) and in Japan (external use only); [HSDB]
• Discontinued use as a color additive for foods, drugs and cosmetics in the US in 1966; [HSDB]
• Pulp and Paper Processing [Category: Industry]
• Leather Tanning and Processing [Category: Industry]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Limited use as a dye for silk and wool fabrics; as biological stain

Synonyms

Acid Green 3; 4680-78-8; Guinea green B; C.I. ACID GREEN 3; Acid Green B; Food Green 1; FD&C Green no. 1; Calcocid Green G; Pontacyl Green B; Leather Green B; Acidal Green G; Acilan Green B; Amacid Green B; Fenazo Green L; Guinea Green BA; Kiton Green F

Frequently Asked Questions

What are the CAS number and molecular formula of guinea green B (C.I. 42085)?

CAS 4680-78-8; molecular formula C37H35N2O6S2.Na; molecular weight — g/mol.

What other names is guinea green B (C.I. 42085) known by?

Acid Green 3, 4680-78-8, Guinea green B, C.I. ACID GREEN 3, Acid Green B, Food Green 1.

What is the regulatory status of guinea green B (C.I. 42085)?

Documented regulatory listings: FDA Substance added to food: Use unspecified; COLOUR: Food Additives; FD&C GREEN NO. 1--DELISTED.

What are the key physical properties of guinea green B (C.I. 42085)?

Melting Point: 255 °C (decomposes); Solubility: In water, 30 mg/mL; Color Additive Status: 81.30.

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.