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Chloramphenicol

$52

  • Brand : BIOFRON

  • Catalogue Number : BD-P0287

  • Specification : 98.0%(HPLC)

  • CAS number : 56-75-7

  • Formula : C11H12Cl2N2O5

  • Molecular Weight : 323.13

  • Volume : 100mg

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Catalogue Number

BD-P0287

Analysis Method

HPLC,NMR,MS

Specification

98.0%(HPLC)

Storage

2-8°C

Molecular Weight

323.13

Appearance

powder

Botanical Source

Structure Type

Amides

Category

SMILES

C1=CC(=CC=C1C(C(CO)NC(=O)C(Cl)Cl)O)[N+](=O)[O-]

Synonyms

IUPAC Name

Applications

Density

1.6±0.1 g/cm3

Solubility

DMSO : ≥ 150 mg/mL (464.21 mM)
*"≥" means soluble, but saturation unknown.

Flash Point

294.4±32.9 °C

Boiling Point

563.2±60.0 °C at 760 mmHg

Melting Point

148-150 °C(lit.)

InChl

InChI=1S/C11H12Cl2N2O5/c12-10(13)11(18)14-8(5-16)9(17)6-1-3-7(4-2-6)15(19)20/h1-4,8-10,16-17H,5H2,(H,14,18)

InChl Key

WIIZWVCIJKGZOK-UHFFFAOYSA-N

WGK Germany

RID/ADR

HS Code Reference

2941400000

Personal Projective Equipment

Correct Usage

For Reference Standard and R&D, Not for Human Use Directly.

Meta Tag

provides coniferyl ferulate(CAS#:56-75-7) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate

No Technical Documents Available For This Product.

PMID

32298888

Abstract

This work focuses on improving the biodegradability of hospital urines polluted with antibiotics by electrochemical advanced oxidation processes (EAOPs). To do this, chloramphenicol (CAP) has been used as a model compound and the influence of anodic material (Boron Doped Diamond (BDD) and Mixed Metal Oxide (MMO)) and current density (1.25-5 mA cm-2) on the toxicity and the biodegradability was evaluated. Results show that a complete CAP removal was attained using BDD anodes, being the process more efficient at the lowest current density tested (1.25 mA cm-2). Conversely, after passing 4 Ah dm-3, only 35% of CAP removal is reached using MMO anodes, regardless of the current density applied. Furthermore, a kinetic study demonstrated that there is a clear competitive oxidation between the target antibiotic and the organic compounds naturally contained in urine, regardless the current density and the anode material used. During the first stages of the electrolysis, acute toxicity is around 1% EC50 but it increases once CAP and its organic intermediates have been degraded. The formation and accumulation of inorganic oxidants may justify the remaining acute toxicity. This also helps to explain the trend observed in the rapid biodegradability assays. Finally, a 60% of standard biodegradability (Zahn-Wellens test) was achieved which suggests that electrochemical oxidation with BDD anodes could be the most appropriate technology to reduce the hazard of hospital urines at the operating conditions tested.

KEYWORDS

Biodegradability; Chloramphenicol; Electrochemical oxidation; Hospital effluents; Urine.

Title

Improving the biodegradability of hospital urines polluted with chloramphenicol by the application of electrochemical oxidation

Author

Miguel Herraiz-Carbone 1, Salvador Cotillas 1, Engracia Lacasa 1, angela Moratalla 2, Pablo CaNizares 2, Manuel A Rodrigo 2, Cristina Saez 3

Publish date

2020 Jul 10;

PMID

32203871

Abstract

The single-chamber bio-photoelectrochemical system (BPES) with a BiOBr photocathode was developed for acid orange 7 (AO7), 2,4 dichlorophenol (2,4-DCP) and chloramphenicol (CAP) degradation under solar irradiation. Photoelectrochemical characterizations showed that the optimized BiOBr-photocathode exhibited great light-response property and excellent electrochemcial performance. Moreover, desired TOC removals were achieved for various organic pollutants, with the values of 90.97% (AO7), 81.41% (2,4-DCP) and 78.47% (CAP). Besides, the lower cathode potentials in the illuminated BPESs were favorable to efficient pollutants degradation. Significant microbial community shifts were observed among the inoculation and anodic biofilms from the BPES, and the most dominated species in anodic biofilms acclimated to various pollutants were Geobacter and Pseudomonas, which have the abilities of extracellular electrons transfer and organics degradation. Some other species that different from the inoculation were also identified from the BPES biofilms. This study suggested that BPES had great potential for refractory organics degradation.

KEYWORDS

Bio-photoelectrochemical system; Microbial community; Photocathode potential; Refractory organics degradation.

Title

Different refractory organic substances degradation and microbial community shift in the single-chamber bio-photoelectrochemical system

Author

Shanming Qin 1, Yanping Hou 2, Guiyun Yuan 1, Zebin Yu 3, Lingli Tu 1, Yimin Yan 1, Shuo Chen 1, Jiangli Sun 1, Danquan Lan 1, Shuangfei Wang 4

Publish date

2020 Jul

PMID

32088614

Abstract

The pipe deposits from water distribution network are iron-wastes, which could be used as a catalyst of advanced oxidation processes (AOPs). This paper prepared one main composition (α-FeOOH) of pipe deposits and compared the difference of chloramphenicol (CAP) degradation by α-FeOOH-activated hydrogen peroxide/persulfate and α-FeOOH-activated hydrogen peroxide/peroxymonosulfate with hydroxylamine assistance. Several key affecting factors were investigated. The results revealed that the double-oxidant system has a synergy effect in CAP degradation process. The hydroxyl radicals were identified as the predominant radicals in two different degradation processes via electron paramagnetic resonance (EPR) technique. The possible degradation pathways and products were confirmed by liquid chromatography-mass spectrometry (LC-MS). This study provided a theoretic research for pollutant removal by taking full advantage of pipe deposits and advance the development of water quality security in water distribution network in future.

KEYWORDS

Chloramphenicol; Double-oxidant; Synergy effect; α-FeOOH.

Title

Degradation of chloramphenicol by α-FeOOH-activated two different double-oxidant systems with hydroxylamine assistance

Author

Fu He 1, Wencheng Ma 2, Dan Zhong 3, Yixing Yuan 4

Publish date

2020 Jul