Solvent Red 1 Property

Melting point:

179 °C

Boiling point:

421.12°C (rough estimate)

Density 

1.1222 (rough estimate)

vapor pressure 

0Pa at 25℃

refractive index 

1.5500 (estimate)

storage temp. 

room temp

solubility 

Chloroform (Slightly), Methanol (Very Slightly)

Colour Index 

12150

pka

13.61±0.50(Predicted)

color 

Orange to Brown

Water Solubility 

330ng/L at 25℃

BRN 

1843558

Stability:

Hygroscopic, Light sensitive

LogP

7.5

CAS DataBase Reference

1229-55-6(CAS DataBase Reference)

EPA Substance Registry System

2-Naphthalenol, 1-[(2-methoxyphenyl)azo]- (1229-55-6)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

22-24/25-36-26-S24/25-S22

WGK Germany 

2

RTECS 

GE5844740

HS Code 

32129000

Hazardous Substances Data

1229-55-6(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H350May cause cancer

Precautionary statements

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

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P272Contaminated work clothing should not be allowed out of the workplace.

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.

P321Specific treatment (see … on this label).

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

P363Wash contaminated clothing before reuse.

P501Dispose of contents/container to..…

Solvent Red 1 Chemical Properties,Usage,Production

Chemical Properties

Solvent Red 1, also known as Sudan Red G, is a yellowish red lysochrome azo dye. It has the appearance of an odorless reddish-orange powder with melting point 225 °C. It is soluble in fats and used for coloring of fats, oils, and waxes, including the waxes used in turpentine-based polishes. It is also used in polystyrene, cellulose, and synthetic lacquers. It is insoluble in water. It is stable to temperatures of about 100–110 °C. It was formerly used as a food dye, but still appears to be used for this purpose in china. It is used in some temporary tattoos, where it can cause contact dermatitis. It is also used in hair dyes. It is a component of some newer formulas for red smoke signals and smoke-screens, together with Disperse Red 11.

Uses

Sudan dyes and para red in food. Dyes and metabolites, Environmental Testing.

Preparation

O-Anisidine diazotization, and Naphthalen-2-ol coupling.

General Description

Sudan dyes are classified under the azo dyes group of organic compounds that are commonly utilized as additive materials for industrial and scientific applications.

Safety Profile

An eye irritant. When heated to decomposition it emits toxic fumes of NOx.

Properties and Applications

red to yellow red orange. Appearance is red to yellow red orange powder, the products by glacial acetic acid crystallization melting point 180 ℃. Soluble in boiling ethanol to red. Light fastness is poorer, in 110 ℃ when stability. In concentrated sulfuric acid for deep red, dilution after dark red precipitation. The alcohol solution to join hydrochloric acid for wine red; Add sodium hydroxide as orange. Mainly used in oil, wax and cultural and educational supplies coloring.