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2021 China New Design 4,4\’-Bis(Chloromethyl)-1,1\’-biphenyl - 2,5-Thiophenedicarboxylic Acid – Subang

2021 China New Design 4,4\’-Bis(Chloromethyl)-1,1\’-biphenyl - 2,5-Thiophenedicarboxylic Acid – Subang Featured Image
  • 2021 China New Design 4,4\’-Bis(Chloromethyl)-1,1\’-biphenyl - 2,5-Thiophenedicarboxylic Acid – Subang

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Our business has been focusing on brand strategy. Customers' pleasure is our best advertising. We also offer OEM company for Oba 220, Fluorescent Whitening Agent BAC, Optical Brightener 351, Should further information be required, please contact us at any time!
2021 China New Design 4,4\’-Bis(Chloromethyl)-1,1\’-biphenyl - 2,5-Thiophenedicarboxylic Acid – Subang Detail:

Structural formula

2

Chemical name:2,5-Thiophenedicarboxylic Acid

Other names: OB acid; ob acid; ob acid; 5-thiophene dicarboxylic acid; 2,5-thiophene diacid; 2,5-dicarboxythiophene; 2,5-thiophene dicarboxylic acid; thiophene-2,5-dicarboxylic acid; 2,5-thiophene dicarboxylic acid; 2,5-thiophene dicarboxylic acid; 2,5-thiophene dicarboxylic acid

Molecular formula: C6H4O4S

molecular weight: 172.16

Numbering System

CAS:  4282-31-9

EINECS : 224-284-2

HS CODE: 2934999090

Physical Data

Appearance: white to light yellowish crystal powder

Purity: ≥98.0%

Density: 1.655 g/cm3

Melting point: >300 °C(lit.)

Boiling point: 444.6ºCat 760 mmHg

Flashing point: 222.7ºC

Solubility: slightly soluble in water

Production Method

Adipic acid and thionyl chloride were mixed in the weight ratio of 1: (6-10) and refluxed for 20-60 h in the presence of pyridine catalyst. The solvent was evaporated and the residue was heated at 140-160 ℃ for 3-7 H. Thiophene-2,5-dicarboxylic acid was obtained by sodium hydroxide treatment, acid precipitation, filtration, decolorization and purification.

Application

The fluorescent whitening agent EBF was prepared by condensation of the product with o-aminophenol. This brightener can be used for nylon, polyester, polypropylene, chloro and triacetic acid fibers. It is a product with excellent properties. It is mainly used in the preparation of fluorescent whitening agent, mainly used in the whitening of synthetic fiber, EVA, PVC, plastic and rubber, and can be used in the whitening of plastic film, compression molding materials, injection molding materials, etc

Storage

Sealed store in ventilated and dry place and keep away from light.

Product detail pictures:

2021 China New Design 4,4\’-Bis(Chloromethyl)-1,1\’-biphenyl - 2,5-Thiophenedicarboxylic Acid – Subang detail pictures

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carry on to further improve, to guarantee merchandise high-quality in line with market and buyer standard necessities. Our organization has a top quality assurance procedure have already been established for 2021 China New Design 4,4\’-Bis(Chloromethyl)-1,1\’-biphenyl - 2,5-Thiophenedicarboxylic Acid – Subang , The product will supply to all over the world, such as: Cyprus, Barbados, Namibia, High output volume, top quality, timely delivery and your satisfaction are guaranteed. We welcome all inquiries and comments. If you are interested in any of our products or have an OEM order to fulfill, please feel free to contact us now. Working with us will save you money and time.
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