Wholesale Price 2,5-Thiophenedicarboxylic acid – 2,5-Thiophenedicarboxylic Acid – Subang

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Wholesale Price 2,5-Thiophenedicarboxylic acid – 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.


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We aim to find out high quality disfigurement in the generation and provide the most effective services to domestic and abroad clients wholeheartedly for Wholesale Price 2,5-Thiophenedicarboxylic acid – 2,5-Thiophenedicarboxylic Acid – Subang , The product will supply to all over the world, such as: India, Roman, Holland, We can meet the various needs of customers at home and abroad. We welcome new and old customers to come to consult & negotiate with us. Your satisfaction is our motivation! Allow us to work together to write a brilliant new chapter!
  • Production management mechanism is completed, quality is guaranteed, high credibility and service let the cooperation is easy, perfect!
    5 Stars By Eartha from Stuttgart - 2018.09.12 17:18
    It is really lucky to meet such a good supplier, this is our most satisfied cooperation, I think we will work again!
    5 Stars By Constance from Stuttgart - 2018.08.12 12:27
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