English

OEM/ODM China 2 nitro para cresol - 2,5-Thiophenedicarboxylic Acid – Subang

OEM/ODM China 2 nitro para cresol - 2,5-Thiophenedicarboxylic Acid – Subang Featured Image
  • OEM/ODM China 2 nitro para cresol - 2,5-Thiophenedicarboxylic Acid – Subang

Short Description:


Product Detail

Product Tags

Related Video

Feedback (2)

Sticking to the perception of "Creating products of top of the range and earning mates with people today from all over the world", we constantly put the desire of consumers in the first place for Optical Brightener OB-1, Optical Brightener Supplier, Fluorescent Whitening Agent EBF, We have been normally seeking forward to forming profitable company relationships with new clientele around the environment.
OEM/ODM China 2 nitro para cresol - 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:

OEM/ODM China 2 nitro para cresol - 2,5-Thiophenedicarboxylic Acid – Subang detail pictures

Related Product Guide:
During the past few years, our business absorbed and digested state-of-the-art technologies the two at home and abroad. Meanwhile, our firm staffs a group of experts devoted to your development of OEM/ODM China 2 nitro para cresol - 2,5-Thiophenedicarboxylic Acid – Subang , The product will supply to all over the world, such as: Costa rica, Washington, New Delhi, We insist on "Quality First, Reputation First and Customer First". We are committed to providing high-quality products and good after-sales services. Up to now, our products have been exported to more than 60 countries and areas around the world, such as America, Australia and Europe. We enjoy a high reputation at home and abroad. Always persisting in the principle of "Credit, Customer and Quality", we expect cooperation with people in all walks of life for mutual benefits.
    • We have been appreciated the Chinese manufacturing, this time also did not let us disappoint,good job!
    5 Stars By Mary from Mexico - 2017.09.28 18:29
    Timely delivery, strict implementation of the contract provisions of the goods, encountered special circumstances, but also actively cooperate, a trustworthy company!
    5 Stars By Alva from Costa Rica - 2017.05.21 12:31
    Write your message here and send it to us

    Products categories