Wholesale Price China BCMB - 2,5-Thiophenedicarboxylic Acid – Subang
Wholesale Price China BCMB - 2,5-Thiophenedicarboxylic Acid – Subang Detail:
Structural formula
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:
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We are experienced manufacturer. Wining the majority of the crucial certifications of its market for Wholesale Price China BCMB - 2,5-Thiophenedicarboxylic Acid – Subang , The product will supply to all over the world, such as: Slovakia, Puerto Rico, Bulgaria, During the short years, we serve our clients honestly as Quality First, Integrity Prime, Delivery Timely, which has earned us an outstanding reputation and an impressive client care portfolio. Looking forward to working with you Now!
By Daphne from Bangalore - 2018.10.31 10:02
The factory technical staff gave us a lot of good advice in the cooperation process, this is very good, we are very grateful.
By Andrea from Nepal - 2018.06.30 17:29