ACID GREEN 3 Chemical Properties

Melting point:

255 °C (dec.) (lit.)

Water Solubility 

Soluble in water

solubility 

DMSO (Slightly), Methanol (Slightly)

Colour Index 

42085

form 

solid

color 

Red to Dark blue to Black

Merck 

14,4575

Stability:

Hygroscopic

CAS DataBase Reference

4680-78-8

IARC

3 (Vol. 16, Sup 7) 1987

EPA Substance Registry System

C.I. Acid Green 3 (4680-78-8)

Safety Information

WGK Germany 

3

RTECS 

BQ4375000

HS Code 

3204.12.5090

Hazardous Substances Data

4680-78-8(Hazardous Substances Data)

Toxicity

LD50 orally in rats: >2 g/kg (Lu, Lavalle)

MSDS

• Language:English Provider:SigmaAldrich

ACID GREEN 3 Usage And Synthesis

Chemical Properties

Green powder

Uses

Guinea Green B has been used as a pharmacophore compound to study its inhibitory action on papillomavirus type 16 E6 protein.

Uses

Limited use as a dye for silk and wool fabrics; as biological stain.

Definition

ChEBI: An organic sodium salt having 3-[(ethyl{4-[(4-{ethyl[(3-sulfonatophenyl)methyl]amino}phenyl)(phenyl)methylidene]cyclohexa-2,5-dien-1-ylidene}azaniumyl)methyl]benzene-1-sulfonate. Used as a substitute for Light green SF yellowish in Masson's trichrome, alth ugh it is prone to fade. Previously used as a food dye but is now no longer approved.

Preparation

Benzaldehyde (1 Moore) and 3-(Ethyl(phenyl)amino)methyl)benzenesulfonic acid (2 Moore) condensation, will product oxidation, and then translate into sodium salt.

General Description

A dull dark green powder. Used as a dye for silk or wool and biological stains.

Air & Water Reactions

Very soluble in water. Forms a green solution, which becomes brownish-yellow by addition of HCl, and blackish-green with NaOH.

Reactivity Profile

ACID GREEN 3 neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. May generate hydrogen, a flammable gas, in combination with strong reducing agents such as hydrides.

Properties and Applications

bright green. Soluble in water for the green, soluble in ethanol for blue light green. The strong sulfuric acid for lemon yellow, diluted to green. The dye solution is to join sodium hydroxide to colorless.

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