SUDAN ORANGE G Chemical Properties

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 Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

RTECS 

CZ9027500

HS Code 

32041200

MSDS

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich

SUDAN ORANGE G Usage And Synthesis

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.]

SUDAN ORANGE G(2051-85-6)Related Product Information

• Acid Brown 14
• 4-(4-Nitrophenyl)azoresorcinol
• SUDAN ORANGE G
• THYMOL VIOLET
• 4-NITROBENZENE-AZO-ORCINOL
• Acid Brown 354
• Mordant Red 5
• CI 13015
• LUMOGALLION
• Direct Brown 95
• SUDAN ORANGE RRA,SUDAN ORANGE,Sudan Orange RPA
• SUDAN ORANGE RA,Sudan Orange RA New,Sudan Orange R,Sudan Orange 220
• Azobenzene
• 5-OCTADECANOYLOXY-2-(4-NITROPHENYLAZO)PHENOL
• 4-(o-tolylazo)resorcinol
• CHOCOLATE BROWN HT
• FLUORENE-2-AZO-2',4'-DIHYDROXYBENZENE
• 1-(2,4-DIHYDROXYPHENYLAZO)-2-NAPHTHOL-4-SULFONIC ACID