3271-76-9 Usage
Description
Vat Green 3 is a deep green, dark gray-green powder that is ethanol and insoluble in water, but soluble in pyridine. In concentrated sulfuric acid, it appears as a brilliant yellow-green, while when diluted, it turns into an olive green color. Alkaline reduction leuco results in a dark blue color, whereas acid reduction leuco yields a dark brown color.
Uses
Used in Textile Industry:
Vat Green 3 is used as a dye for cotton fiber, as well as for dyeing and printing of vinylon and cotton blend fabrics. It provides a slightly deeper color yield on polyvinyl alcohol (PVA) and is suitable for direct printing. Its leuco or yarn can be used to dye cotton knitwear. Additionally, it can be used in a one-bath dyeing process with disperse dyes for polyester/cotton blended fabrics, where it imparts a slight color to the polyester component.
Standard:
Vat Green 3 has been tested and meets various industry standards for different properties, including:
Ironing Fastness: ISO 4-5, AATCC 5
Chlorine Bleach: ISO 4-5, AATCC 4-5
Light Fastness: ISO 8, AATCC 8
Mercerized: ISO 4-5, AATCC 4-5
Oxygen Bleach: ISO 4-5, AATCC 4-5
Soaping: ISO 4, AATCC 4-5
Fading: ISO 4-5, AATCC 4-5
Stain: ISO 4, AATCC 4-5
These standards ensure the quality and performance of Vat Green 3 in various applications within the textile industry.
Preparation
in Sodium carbonate and Cupric oxide under the existence of, in the boiling of naphthalene, 3-Bromo-6aH-benzo[de]anthracen-7(8H)-one and 1-Aminoanthracene-9,10-dione condensation,Then isobutanol cyclization with potassium hydroxide.
Flammability and Explosibility
Notclassified
Standard
Ironing Fastness
Fading
Stain
ISO
4-5
AATCC
5
Check Digit Verification of cas no
The CAS Registry Mumber 3271-76-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,7 and 1 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 3271-76:
(6*3)+(5*2)+(4*7)+(3*1)+(2*7)+(1*6)=79
79 % 10 = 9
So 3271-76-9 is a valid CAS Registry Number.
InChI:InChI=1/C31H15NO3/c33-29-19-6-2-1-5-15(19)16-13-14-24-26-17(9-11-22(29)25(16)26)18-10-12-23-27(28(18)32-24)31(35)21-8-4-3-7-20(21)30(23)34/h1-14,32H
3271-76-9Relevant articles and documents
A reduction olivaceoviridis B dye preparation method
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Paragraph 0024-0037, (2017/03/24)
The invention relates to a preparation method of a vat olive green B dye and aims to provide a vat olive green B dye which is simple in process, low in cost and excellent in quality of product, and a preparation method of the vat olive green B dye. The preparation method of the vat olive green B dye comprises the following steps: dissolving 3-bromobenzanthracen and 1-amino-anthraquinone in an organic solvent, adding a catalyst and an acid-binding agent, heating to 200-220 DEG C and carrying out condensation reaction, removing a solvent and filtering, washing a filter cake by using water to be neutral, then drying to obtain anthrimide; dissolving the anthrimide in a triethylene glycol alkaline solvent, reacting for 3-6 hours at the temperature of 150+/-2 DEG C, filtering, washing the filter cake by using water to be neutral, and then drying to obtain a product. The preparation method of the vat olive green B dye is simple in process, short in production cycle, convenient in sources of raw materials, excellent in quality of the produced products and high in yield; meanwhile, the whole production process is low in cost and little in environment pollution.