128-89-2 Usage
General Description
4,5'-dibenzamido-1,1'-iminodianthraquinone is a synthetic organic compound that belongs to the class of iminoanthraquinone dyes. It is commonly used as a dye intermediate in the production of various colored materials such as textiles, leather, and paper products. This chemical is characterized by its deep red to violet color and is typically used in the formulation of colorants for various industrial applications. Additionally, it is known for its high stability and resistance to fading, making it suitable for use in products that require long-lasting color quality. However, it is important to handle this chemical with caution as it may pose health hazards and environmental risks if not managed properly.
Check Digit Verification of cas no
The CAS Registry Mumber 128-89-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,2 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 128-89:
(5*1)+(4*2)+(3*8)+(2*8)+(1*9)=62
62 % 10 = 2
So 128-89-2 is a valid CAS Registry Number.
128-89-2Relevant articles and documents
PREPARATION METHOD OF ORIGINAL DYE OF VAT BROWN R
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, (2012/12/13)
A preparation method of original dye of Vat Brown R comprises the following steps: a. after acylation of 1,5-diaminoanthraquinone, 1-amino-5-benzamidoanthraquinone was prepared by acidic hydrolysis; b. 1-benzamido-4-bromoanthraquinone was obtained from 1-aminoanthraquinone by acylation and bromination; c. a condensate of Vat Brown R was obtained by condensation reaction of 1-amino-5-benzamidoanthraquinone and 1-benzamido-4-bromoanthraquinone; d. the original dye of Vat Brown R was obtained from the condensate of Vat Brown R by ring closing reaction and oxidation reaction. The method omits one oxidation step, economizes significant amount of oxidizing agent, and reduces significant amount of waste water, so it is very beneficial to environment protection; and the method also exhibited the advantages of highly increasing product yield and reducing the costs of raw materials to an extent of more than 30%.