Product

Direct Yellow 12

CAS No.：2870-32-8

Other grades of this product :

Direct Yellow 12 Basic information

Product Name:	Direct Yellow 12
Synonyms:	abcol direct yellow 4 ra;Direct yellow 12 (C.I. 24895);Atul Direct Fast Yellow GCH;Diazine Yellow CP;Direct Brilliant Yellow 4R;Direct Yellow GK;Kayaku Chrysophenine;Mitsui Chrysophenine G
CAS:	2870-32-8
MF:	C30H26N4Na2O8S2
MW:	680.66
EINECS:	220-698-2
Product Categories:	Organics;Stilbenes;Dyes and Pigments
Mol File:	2870-32-8.mol

Direct Yellow 12 Chemical Properties

Melting point	>300°C
storage temp.	Amber Vial, Refrigerator, Under inert atmosphere
solubility	DMSO (Slightly), Methanol (Slightly), Water (Slightly)
Colour Index	24895
form	Solid
color	Orange to Dark Orange
Stability:	Light Sensitive
EPA Substance Registry System	C.I. Direct Yellow 12 (2870-32-8)

Safety Information

WGK Germany	3
TSCA	Yes

MSDS Information

Provider	Language
C.I. 24895	English
SigmaAldrich	English

Direct Yellow 12 Usage And Synthesis

Chemical Properties

orange crystalline powder

Uses

A diazo stilbene dye

Properties and Applications

TEST ITEMS	SPECIFICATION
APPEARANCE	YELLOW
LIGHTING	4
SOAPING	3-4
PERSPIRATING	3-4
FRICTION(DRY)	4-5
FRICTION(WET)	3
RESIDUE ON 80 MESH	5.0% max
WATER SOLUBILE	1.0% max
VOLATITE 105°C	1.0% max
TINTING STRENGTH	100-105 %
WEIGHT METAL TOTAL	50ppm max

Direct Yellow 12 Preparation Products And Raw materials

Raw materials	Sulfuric acid-->Sodium carbonate-->Sodium nitrite-->Phenol-->CHLOROETHANE-->Benzoic acid-->Sulfurous Acid-->4,4'-Diamino-2,2'-stilbenedisulfonic acid-->1,2-Diphenylethylenediamine-->4,4'-Diamino-2,2'-stilbenedisulfonic acid-->Phenol-->CHLOROETHANE
Preparation Products	Direct Yellow 19

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