2278-50-4 Usage
Preparation
3,9-Dibromo-7H-benzo[de]anthracen-7-one, 3H-naphtho[2,3-f]indazol-3-one and 1-Aminoanthracene-9,10-dione in Potassium hydroxide under the existence of condensation, closed loop.
Safety Profile
Mildly toxic by
intraperitoneal and ingestion routes. An eye
irritant.When heated to decomposition it
emits toxic fumes of NOx.
Properties and Applications
blue light grey. Black powder. Insoluble in water, Acetone, Etanol, Toluene and Chloroform, slightly soluble in 2 – Chlorophenol, Pyridine . In concentrated sulfuric acid to have yellow green: alkaline reduction leuco for blue light green; Acid reduction leuco for red brown: mainly used in the cotton fabric jig dyeing, dyeing and suspended pad dyeing, also used for Fiber/cotton, polyester-cotton blended fabric two bath set of dye dyeing. Suitable for suspension pad dyeing deep, shallow gray, and can spell dye all kinds of noise. Its main leuco dye yarn, can also be used to viscose and silk dyeing.
Standard
Ironing Fastness
Chlorine bleach
Light Fastness
Mercerized
Oxygen bleach
Soaping
Fading
Stain
ISO
4
4-5
7
4
5
4
5
Standard
Ironing Fastness
Fading
Stain
ISO
4
Check Digit Verification of cas no
The CAS Registry Mumber 2278-50-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,7 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2278-50:
(6*2)+(5*2)+(4*7)+(3*8)+(2*5)+(1*0)=84
84 % 10 = 4
So 2278-50-4 is a valid CAS Registry Number.
InChI:InChI=1/C45H19N3O4/c49-42-24-6-2-1-5-22(24)40-37-29(42)13-10-23-21-9-12-28-33-19(16-18-32(35(21)33)48(47-40)41(23)37)20-15-17-31-34(36(20)45(28)52)27-11-14-30-38(39(27)46-31)44(51)26-8-4-3-7-25(26)43(30)50/h1-18,46H
