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Vat Blue 20 CAS No.116-71-2

Vat Blue 20 CAS No.116-71-2

Basic Info

Model No.: C.I.Vat Blue 20

Product Description

Dynathrene dyes offer excellent fastness to washing, light and bleaching for cellulosic fiber.

Dynathrene C.I. Vat CAS NO. Characteristics
Blue BO Blue 20 116-71-2 Dull bluish violet to Reddish Navy Blue

Product Name: Vat Blue 20
Product Description:
Synonyms:C.I. 59800; C.I. Pigment Blue 65; C.I. Vat Blue 20; Violanthrone; anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione; C.I.Vat Blue 20; Vat Dark Blue BO; Pigment Blue 65; Dibenzanthrone
Molecular Formula:C34H16O2

Molecular Weight: 456.4896
CAS NO.116-71-2

EINECS 204-152-0

Molecular Structure :

Vat Blue 20 CAS NO.116-71-2

Properties and Applications: dark blue purple red to purplish blue. Blue black powder. Etanol and insoluble in water, soluble in 1, 2, 3, 4 – Tetrahydronaphthalene and Xylene in red solution (with red fluorescence), slightly soluble in Acetone, Chloroform, 2 – Chlorophenol, Pyridine and Toluene. Alkaline reduction leuco for dark purple; Acid reduction leuco for wine. In concentrated sulfuric acid for purple black, dilution after purple black precipitation. Used for cotton fiber dyeing, poor levelness. Widely used in dark blue fabric and polyester/cotton khaki dyeing. The leuco used for hosiery dyeing, in yarn-dyed mainly applied to dyeing yarn. Used for Cotton Fabric direct printing. Can dye viscose, silk and d/cotton goods. Can also be processed into organic pigment.

Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping
Fading Stain
ISO 1 4 6-7 4-5 4
AATCC 1 4-5 6-7 4 4 4-5 5


Dynasty Chemicals (NingBo) Co., Ltd.


Dynasty Chemicals (Ningbo) Co., Ltd. is a manufacturer and exporter of dyestuffs, pigments and speciality chemicals, auxiliaries for textile, plastics, coating, inks industry. Since our establishment in 1998, we`ve rapidly expanded our market to over 40countries in Asia, Europe, America and Africa over the years. Based on our team of dedicated professionals, well-equipped QC laboratory and continuous R&D investment, we supply high performance, eco-friendly colors and chemicals, as well as good technical service to our customers. Our laboratory is equipped with modern testing devices that provide extensive analysis for most of our customer`s requests. Before delivery all the batches are tested and compared to standard by visual assessment and color measurement devices. We have infrared dyeing machine and Datacolor spectrophotometer. Our cooperation with customers on custom synthesis and color blending are already carried out with several successful cases.

Company Info

  • Company Name: Dynasty Chemicals (NingBo) Co., Ltd.
  • Product/Service: Textile Dyes , Organic Pigments , Polymer Additives , Pigment Dispersion , Solvent Dyes , PVC Stabilizers
  • Capital (Million US $): RMB1.5million
  • Year Established: 1998
  • Total Annual Sales Volume (Million US $): US$10 Million - US$50 Million
  • Export Percentage: 71% - 80%
  • Total Annual Purchase Volume (Million US $): US$10 Million - US$50 Million
  • No. of Production Lines: 5 lines
  • No. of R&D Staff: 11 -20 People
  • No. of QC Staff: 5 -10 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 10,000-30,000 square meters
  • Factory Location: Ningbo National Chemical Zone, China
  • Contact Person: Mr. Eric Wang
  • Tel: +86-574-56707018
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