8004-94-2 Usage
Description
Methylene violet (basic dye) is a red light purple powder that is soluble in water, resulting in a red light purple solution. It is also soluble in ethanol, producing a fluorescent orange-red solution. When exposed to strong sulfuric acid, it turns green and becomes blue to red light purple when diluted. The dye solution forms a deep red soluble precipitate when mixed with sodium hydroxide.
Uses
Used in Textile Industry:
Methylene violet (basic dye) is used as a dye for cotton cloth, tannins mordant dyeing, silk, leather, and paper color. It has a light fastness rating of B, perspiration fastness rating of 1, ironing fastness rating of 1-2, soaping rating of 2-3, and fading and staining ratings of 1.
Preparation
N1,N1-dimethylbenzene-1,4-diamine,aniline hydrochloride and the mixture of oxidizing p-Methylaniline.
Standard( Cotton )
Light Fastness
Fading
Stain
Check Digit Verification of cas no
The CAS Registry Mumber 8004-94-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 8,0,0 and 4 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 8004-94:
(6*8)+(5*0)+(4*0)+(3*4)+(2*9)+(1*4)=82
82 % 10 = 2
So 8004-94-2 is a valid CAS Registry Number.
