Solvent Blue 4 Property

Boiling point:

682.7±55.0 °C(Predicted)

Density 

1.199

vapor pressure 

0.2Pa at 25℃

storage temp. 

-20°C Freezer, Under inert atmosphere

solubility 

Chloroform (Sparingly), DMSO (Slightly), Methanol (Slightly, Heated)

form 

Solid

pka

13.56±0.29(Predicted)

color 

Dark Red to Very Dark Purple

Water Solubility 

6μg/L at 25℃

LogP

7.114 at 25℃

EPA Substance Registry System

1-Naphthalenemethanol, .alpha.,.alpha.-bis[4-(dimethylamino)phenyl]-4-(phenylamino)- (6786-83-0)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H318Causes serious eye damage

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P310Immediately call a POISON CENTER or doctor/physician.

Solvent Blue 4 Chemical Properties,Usage,Production

Uses

α,α-Bis[4-(dimethylamino)phenyl]-4-(phenylamino)-1-naphthalenemethanol is a solvent dye also known as solvent blue 4 with potential uses in inks and as a food additive.

Preparation

(a) 4-(Dichloro(4-(dimethylamino)phenyl)methyl)-N,N-dimethylbenzenamine and Naphthalen-1-amine condensation; (b) Bis (4 – (dimethylamino) phenyl) methanol and Naphthalen-1-amine condensation, the product into N – nitroso derivatives and oxidation, remove nitroso.

Flammability and Explosibility

Non flammable

Properties and Applications

brilliant blue. Soluble in water is blue, soluble in ethanol for blue. In concentrated sulfuric acid to red light brown, dilution after yellow to green and then to blue. Dye aqueous solution to join sodium hydroxide have dark red light brown precipitation