JANUS BLACK Property

Melting point:

200 °C (dec.)(lit.)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

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.

JANUS BLACK Chemical Properties,Usage,Production

Uses

Janus Black was used for the dyeing of polyacrylonitrile fibers.

Preparation

N, N-diethyl-phenosafranine diazo, coupled with phenol.

Properties and Applications

green and black. Soluble in water for dark green light blue, soluble in ethanol for red light blue. The strong sulfuric acid for green, diluted for purple, and a green precipitation. The dye solution to join hydrochloric acid soluble green precipitate generated; With strong sodium hydroxide solution generation red precipitate.

Forms and nomenclature

Janus Black R 17 is formed by coupling diazotized diethylphenosafranine to phenol.