FAT BROWN RR Property

Melting point:

147-158 °C(lit.)

Boiling point:

395.56°C (rough estimate)

Density 

1.1790 (rough estimate)

refractive index 

1.6000 (estimate)

form 

Powder

color 

Dark, rusty brown

IARC

3 (Vol. 8, Sup 7) 1987

EPA Substance Registry System

1,3-Benzenediamine, 4-[2-(1-naphthalenyl)diazenyl]- (6416-57-5)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

RTECS 

ST2900000

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

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

FAT BROWN RR Chemical Properties,Usage,Production

Preparation

Naphthalen-1-amine diazotization, and Benzene-1,3-diamine coupling.

Definition

ChEBI: Sudan Brown RR is a member of azobenzenes.

Properties and Applications

red orange and brown. Soluble in ethanol, acetone and benzene. In concentrated sulfuric acid to dark red light yellow to brown, after diluted solution for brown, precipitation, In concentrated sodium hydroxide solution insoluble. Dye alcohol solution to join concentrated hydrochloric acid is red. Used for oil, paraffin wax, printing ink, alcohol soluble paint color.