2,5-Thiophenedicarboxylic Acid
Mamiriro ezvinhu
Zita remakemikari: 2,5-Thiophenedicarboxylic Acid
Mamwe mazita: OB asidhi;ob acid;ob acid;5-thiophene dicarboxylic asidhi;2,5-thiophene diacid;2,5-dicarboxythiophene;2,5-thiophene dicarboxylic asidhi;thiophene-2,5-dicarboxylic asidhi;2,5-thiophene dicarboxylic asidhi;2,5-thiophene dicarboxylic asidhi;2,5-thiophene dicarboxylic acid
Molecular formula: C6H4O4S
molecular uremu: 172.16
Kuverenga System
CAS: 4282-31-9
EINECS : 224-284-2
HS CODE: 2934999090
Physical Data
Kuonekwa: kuchena kusvika kuchiedza yellowish crystal powder
Kuchena: ≥98.0%
Density: 1.655 g/cm3
Kunyungudika: >300 °C (lit.)
Poindi yekuvira: 444.6ºCat 760 mmHg
Painopenya: 222.7ºC
Solubility: inonyungudika zvishoma mumvura
Kugadzira Nzira
Adipic acid uye thionyl chloride yakasanganiswa muyero yehuremu hwe1: (6-10) uye yakagadziriswa kwe20-60 h pamberi pepyridine catalyst.The solvent was evaporated and the sare was heat at 140-160 ℃ for 3-7 H. Thiophene-2,5-dicarboxylic acid yakawanikwa ne sodium hydroxide treatment, acid precipitation, filtration, decolorization uye kucheneswa.
Application
Iyo fluorescent whitening agent EBF yakagadzirirwa nekutsikirirwa kwechigadzirwa neo-aminophenol.Izvi zvinopenya zvinogona kushandiswa naironi, polyester, polypropylene, chloro uye triacetic acid fibers.Icho chigadzirwa chine zvinhu zvakanakisa.Inonyanya kushandiswa mukugadzirira kwefluorescent whitening agent, inonyanya kushandiswa mukucheneswa kwefiber synthetic, EVA, PVC, plastiki nerabha, uye inogona kushandiswa mukuchena kwefirimu repurasitiki, compression molding materials, jekiseni rekuumba zvinhu, nezvimwe zvakadaro.
Storage
Chitoro chakavharwa munzvimbo ine mhepo uye yakaoma uye chengetedza kure nechiedza.
