Chrysodine -G or (2,4-diamino-azobenzene) or chrysodine-g -mono-azo- basic dye - or basic orange-2 -synthesis - study everything.

Chrysodine-G or 2,4,-diamino-azobenzene or mono-azo-basic dye.

WHAT IS DYES ?

Definition : generally dye is a colored organic compound or mixture which used for imparting color to the substrate or objects like paper, plastic , cloths , and leather etc.

The  long time stability is required for good quality of dye.

The dyed substrate should be resistant to a normal cleaning procedures and stable to light.

Crysodine-G is a mono-azo(-N=N-)basic(here base  is a( –NH₂) dye.

It is synthesized from aniline.

Chemical properties :

IUPAC NAME :  4-(phenyldiazenyl benzene ) 1,3- diamine.

CAS number :  532-82-1 

Structure formula :

Physical properties :

Molecular formula : C₁₂H₁₂N₄

Molecular weight : 212.25 gm/mole.

Malting point : 118-118.5 ⁰c.

Boiling point : 2262 ⁰c.

Solubility : solubility in water 20mg/ L at (15 ⁰c).

                     Also soluble in ethanol (9 mg/L) about 4.75%.

                       Insoluble in benzene.

Color : reddish brown color or burgundy color.

State : crystalline powder (burgundy color).

odor :  not specific odor or odorless .

SYNTHESIS OF CRYSODINE-G

STATEMENT :  in the first step of reaction the diazotization of aniline gives benzene diazonium chloride (B.D.C.) then reaction of benzene diazonium chloride with m-phenylene diamine further yields final product crysodine-G.

Chemical reaction :

Uses of crysodine-G

Crysodine-G dye is widely used for dying many numbers of substrate given below.

(i)                  Silk.

(ii)                Wool.

(iii)               Cotton.

(iv)              Waxes for polishes.

(v)                Printing inks.

(vi)              Color of different plastics.

(vii)             Biological stain.

(viii)           Also used for staining of wood.

(ix)              Leather.

(x)                Paper.

Some times it is also used as a antiseptic.

NOTE : azo dyes are toxic in nature.

It is causes skin irritation , and also toxic for aquatic animals or aquatic environment , also causes genetic defects.

General information

diazotization reaction : point (5.6) click here

see also :

IBUPROFEN DRUG [NSAID'S] [click here]

 ATENOLOL [TENORMIN] - medicinal drug   [click here]

ADRENALINE [EPINEPHRINE]  - medicinal drug -hormone  [click here].

orange-II dye or 2-naphthol orange or β-NAPHTHOL ORANGE - mono-azo acidic dye, or basic orange-2  [click here].

what is science ? all about science.  [click here].

auramine-o or yellow dye or diarylmethane dye or bis [4-(dimethyl amine ) phenyl ] – methanimium chloride. [click here]

michler's ketone[click here]

[અસ્તુ:]