Chinese wholesale O-Amino Phenol - 2,5-Thiophenedicarboxylic Acid – Subang

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Our rewards are lower costs,dynamic profits team,specialised QC,potent factories,high-quality services for Optical Brightener For Plastic, Optical Brightener Bbu, 95-84-1, Our highly specialized process eliminates the component failure and offers our customers unvarying quality, allowing us to control cost, plan capacity and maintain consistent on time delivery.
Chinese wholesale O-Amino Phenol - 2,5-Thiophenedicarboxylic Acid – Subang Detail:

Structural formula

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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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The customer satisfaction is our primary target. We uphold a consistent level of professionalism, quality, credibility and service for Chinese wholesale O-Amino Phenol - 2,5-Thiophenedicarboxylic Acid – Subang , The product will supply to all over the world, such as: Albania, Zurich, Atlanta, Our company abides by the management idea of "keep innovation, pursue excellence". On the basis of assuring the advantages of existing merchandise, we continuously strengthen and extend product development. Our company insists on innovation to promote the sustainable development of enterprise, and make us become the domestic high-quality suppliers.
  • In our cooperated wholesalers, this company has the best quality and reasonable price, they are our first choice.
    5 Stars By Gabrielle from San Francisco - 2017.11.20 15:58
    Staff is skilled, well-equipped, process is specification, products meet the requirements and delivery is guaranteed, a best partner!
    5 Stars By Nicola from Serbia - 2017.06.25 12:48
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