SUDAN ORANGE G Property

Melting point:

143-146 °C(lit.)

Boiling point:

354.35°C (rough estimate)

Density 

1.2042 (rough estimate)

refractive index 

1.6660 (estimate)

storage temp. 

Amber Vial, Refrigerator, Under inert atmosphere

solubility 

DMSO (Slightly), Methanol (slightly)

Colour Index 

11920

form 

Powder

pka

8.77±0.18(Predicted)

color 

Red-orange

Water Solubility 

0.2g/L(20 ºC)

BRN 

958430

LogP

1.003 (est)

EPA Substance Registry System

1,3-Benzenediol, 4-(phenylazo)- (2051-85-6)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

RTECS 

CZ9027500

HS Code 

32041200

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

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

P302+P352IF ON SKIN: wash with plenty of soap and water.

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

SUDAN ORANGE G Chemical Properties,Usage,Production

Chemical Properties

red-orange powder

Uses

Sudan Orange G is an oil soluble synthetic dye. Sudan Orange G can be degraded by a bacterial strain known as Pseudomonas putida MET94. Dyes and metabolites, Environmental Testing

Preparation

aniline diazo, Coupled with resorcinol.

Properties and Applications

bright orange. Yellow orange powder, melting point: 150 ~ 170 ℃ (usually products do not pure). Soluble in ethanol and aether (yellow), in the ethanol solubility of 0.2 ~ 0.3 g / 100ml, slightly soluble in water, but soluble in vegetable oil. The strong sulfuric acid to red light brown, for yellow brown solution diluted, and then into a dark orange precipitation; In 2% of sodium hydroxide solution (heating) for orange brown solution. Its water solution and strong hydrochloric acid color the darker, and then generate a shallow brown precipitation. Sun of resistance, alkali resistance is bad. And C.I.Solvent Orange 1?the same chemical structure.

Purification Methods

Crystallise the dye from hot EtOH (charcoal). [Beilstein 16 IV 264.]