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Professional China O-Hydroxyaniline - 2,5-Thiophenedicarboxylic Acid – Subang

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  • Professional China O-Hydroxyaniline - 2,5-Thiophenedicarboxylic Acid – Subang

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We also supply merchandise sourcing and flight consolidation companies. We now have our very own manufacturing facility and sourcing business. We could present you with almost every kind of product relevant to our solution array for Optical Brightener for polyester, Fluorescent Brightener BBU, Optical Brightner Cbs-127, Our tenet is "Reasonable prices, efficient production time and best service" We hope to cooperate with more customers for mutual development and benefits.
Professional China O-Hydroxyaniline - 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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High-quality comes 1st; support is foremost; business is cooperation" is our small business philosophy which is regularly observed and pursued by our organization for Professional China O-Hydroxyaniline - 2,5-Thiophenedicarboxylic Acid – Subang , The product will supply to all over the world, such as: El Salvador, Bogota, Greenland, We have a excellent team supplying professional service, prompt reply, timely delivery, excellent quality and best price to our customers. Satisfaction and good credit to every customer is our priority. We are sincerely looking forward to cooperate with customers all over the world. We believe we can satisfy with you. We also warmly welcome customers to visit our company and purchase our products.
    • The company has rich resources, advanced machinery, experienced workers and excellent services, hope you keep improving and perfecting your products and service, wish you better!
    5 Stars By Laurel from Tanzania - 2018.06.12 16:22
    As an international trading company, we have numerous partners, but about your company, I just want to say, you are really good, wide range, good quality, reasonable prices, warm and thoughtful service, advanced technology and equipment and workers have professional training, feedback and product update is timely, in short, this is a very pleasant cooperation, and we look forward to the next cooperation!
    5 Stars By Megan from azerbaijan - 2018.06.03 10:17
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