PHENYL - 180 Anuncios

Monday 12 August 2019

The rapid chromatographic method is a technology widely used in the separation and purification of active target compounds, such as organic compounds, natural products, and biological macromolecules. Rapid chromatographic method has the advantages of easy-operation, low-price, and fast-analysis...

Monday 12 August 2019

The system of an HPLC column is composed of a liquid, a reservoir, a pump, a sampler, a column, a detector and a recorder. - The packing material of HPLC columns - The packing material has high carbon content, small surface polarity, very low chemical purity and high surface separation...

Thursday 08 August 2019

Most common SPE cartridges are injection syringes made of polyethylene, in which there are two plugs made of polypropylene or fiberglass, with a certain amount of chromatographic adsorbent (filler) between the two plugs. SPE cartridges without sieve plate 1. Avoid “non-specific adsorption” 2...

Tuesday 06 August 2019

In recent years, the application of HPLC in inorganic analysis has developed rapidly, and the use of flash columns has been more and more widely because of a method that can rapidly determine heavy metal elements in environmental water samples. Matters needing the attention of flash columns 1...

Thursday 01 August 2019

There are two different cases of retention time: retention time drift and retention time fluctuations. The former means that the retention time changes only in one direction, while the latter refers to the fluctuation of the retention time without a fixed law. It is often helpful...

Friday 19 July 2019

Bonded-phase chromatography is a liquid-liquid chromatography method in which a stationary phase is covalently bound to a carrier particle, which overcomes the mechanical shock in the distribution chromatography, the constant loss of the stationary phase and the gradual change of...

Monday 08 July 2019

As a simple and fast absorption chromatography technique for the routine purification of organic compounds, flash chromatography is developed for the daily purification of reaction products in the lab, which is low costs and achieves separations of samples (0.01-10.0 g weight) in short time...

Friday 05 July 2019

When the polarity of the stationary phase is greater than the polarity of the mobile phase, it can be called normal phase partition chromatography or simply normal phase chromatography. If the polarity of the stationary phase is less than the polarity of the mobile phase, it can be...

Thursday 04 July 2019

Flash column chromatography method is to separate the constituents from the mixture and thus purify it. In a word, flash column chromatography makes the samples go through the column which is filled with gel to achieve separation. In the beginning, the founder of flash column chromatography, Mr...

Thursday 04 July 2019

(1) When loading and unloading or replacing the HPLC columns, the action should be light and the joint should be tightened properly. Strong mechanical vibration must be prevented to avoid voids in the bed. (2) If the instrument is used for routine analysis, the sample type is limited...

Tuesday 02 July 2019

The key to regenerating contaminated HPLC columns is to know the nature of the contaminants and to find the right solvent to remove. If contamination is caused by the accumulation of strongly retained materials during repeated injections, simple steps to remove these contaminants...

Friday 28 June 2019

Stationary Phase & Mobile Phase The stationary phase is used to separate the substances, which is packed into HPLC Column directly; Mobile phase is the carrier, which carries the substances into the stationary phase and goes through the stationary phase. It is gas in the vapor phase...

Friday 21 June 2019

The cation chromatography column is a kind of high-performance liquid chromatography, which is a liquid chromatography method for analyzing anions and cations. The method has the advantages of good selectivity, sensitivity, rapidity, and simplicity, and can simultaneously measure...

Wednesday 19 June 2019

Hawach Scientific sorts HPLC out of two series which are Xchroma and Echroma. Xchroma columns possess many and complete types of stationary phase(23 in total) with reliable qualities, while another one is cheaper among lower prices. Essential Technical Parameters Naming Rule It consists...

Friday 14 June 2019

As a simple and fast absorption chromatography technique for the routine purification of organic compounds, flash chromatography is developed for the daily purification of reaction products in the lab, which is low costs and achieves separations of samples (0.01-10.0 g weight) in short time...

Friday 31 May 2019

Flash Columns Series Flash Columns produced by Hawachhas three series as follows. StarFlash Only silica gel columns are optional with another two types of standard and high-grade level which has higher purity degree and better quality than the former. PureFlash Corresponding to silica...

Tuesday 09 January 2018

Skullcap Scientific Name: Scutellaria baicalensis Common Name: Chinese Skullcap Family: Lamiaceae Part used: Peeled and Dried Root Plant Properties: Antioxidant /Anti-inflammatory allergy /Anti-microbial / Diuresis /Cholagogue /Antipyretic Used For: allergies/respiratory/fever/coughs/diarr hea/ur...

Tuesday 08 November 2016

Qingdao QY Liquid Crystal Co., Ltd. is a professional manufacturer and exporter of liquid crystal material, liquid crystal monomer,liquid crystal intermediate and Nematic liquid crystal, especially for polymer dispersed liquid crystal (PDLC), pdlc film, switchable pdlc film and smart film...

Saturday 15 October 2016

CE10 4-((2s)-2-methylbutyl)phenyl 4-pentylbenzoate Ubicación : tailiu road, 266000 qingdao, Persona a contactar : Wang Judy, 8653285827353

Tuesday 30 August 2016

Precio : 10,00 €

Within those famous vinyl phenyl silicone resin manufacturers and suppliers in China, RUNHE is the most reliable. You are welcomed to wholesale low price vinyl phenyl silicone resin from our factory and check the quotation with us.Vinyl Phenyl Silicone MQ ResinProduct Name：Vinyl Phenyl...

Friday 08 July 2016

Cantidad : 50 tons pe

Plant Sources Roots and stems of Cactus (Opuntia dillenii Haw) Bioctive Ingredients tetrahydroisoquinoline, phenyl-containing chain hydrocarbon amines, malic acid, succinic acid, mucus, triterpenoid saponin Stems contain quercetin-3-glycoside, resins, proteins, etc. CAS Number...

Thursday 26 May 2016

E-mail: sales@liquidcrystals.cn sales@canaanchem.com http://www.liquidcrystals.cn http://www.canaanchem.com Qingdao QY Liquid Crystal Co., Ltd. is a professional manufacturer and exporter of liquid crystal material, liquid crystal monomer,liquid crystal intermediate and Nematic...

Thursday 07 April 2016

D-P-Methyl Sulfone Phenyl Ethyl Serinate CAS NO .: 36983-12-7 Product Usage: Chemical intermediates, pharmaceutical intermediates English D-P-Methyl Sulfone Phenyl Ethyl Serinate Formula C12H17NO5S Molecular weight 287.33 Appearance light yellow to white crystalline powder...

Thursday 28 November 2013

Cantidad : 1 - Precio : 1,00 €

2-amino-5-chlorophenyl)phenyl-methanon Synonyms: (2-amino-5-chlorophenyl)(phenyl)methanon e; Aminoketone; Benzophenone, 2-amino-5-chloro- (8CI); 5-Chloro-2-aminobenzophenone;Benzophenon e, 2-amino-5-chloro-; (2-amino-5-chloro-phenyl)-phenyl-methano ne; (2-Amino-5-chlorophenyl)phenylmethanone. ..

Thursday 28 November 2013

Cantidad : 1 - Precio : 1,00 €

2-Phenylbenzimidazole-5-sulfonic acid Synonyms: 1H-Benzimidazole-5-sulfonicacid, 2-phenyl- (9CI); 5-Benzimidazolesulfonic acid, 2-phenyl- (8CI); 2-Phenyl-5-sulfobenzimidazole; Phenylbenzimidazole sulfonic acid; Ensulizole;Eusolex 232; Neo Heliopan Hydro;Novantisol; Parsol HS; CAS No...

Thursday 10 January 2013

Cantidad : 1 - Precio : 2 000,00 €

Rubber Antioxidant 6PPD(4020) Chemical name: N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenyl enediamine Molecular Formula: C18H24N2 Molecular Weight: 268 Product standard: (HG/T3644-1999) CAS No.: 793-24-8 Product Specification: Item Qualified Grade Appearance ...

Friday 14 September 2012

Cantidad : 300 tons p - Precio : USD 2900/ton

rubber antioxidant 4010NA/IPPD Specification: CAS No.: 101-72-4; EINECS No.: 202-969-7; Chemical name: N-isopropyl-N'-phenyl-p-phenylenediamine ; Appearance: purple-brown granule; Melting point min: 70.0; Heating loss(%max): 0.50; Ash content(%max): 0.30. Main identity: ...

Friday 14 September 2012

Cantidad : 300 tons p - Precio : USD 2900/ton

rubber antioxidant 4020/6PPD Quality specification: CAS No.: 793-24-8; EINECS No.: 236-199-8; Chemical name: N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenyl enediamine; Appearance: purple-brown granule; Melting point(min): 46.0; Heating loss(%max): 0.50; Ash content(%max): 0.30. Main identity...

Friday 22 June 2012

Cantidad : 100 tons/y - Precio : On demand

Our company offers for sale one of the most typical products of Bulgarian origin - Rose flower water. Package: Plastic barrels of 220 kg net each. Appearance: Transparent or opalescent liquid Color: Colorless Aroma: Of Rose Content of essential oil: Not less than 0.025% Identity...

Monday 31 May 2010

Talniflumate Synonyms: 2-[[3-(Trifluoromethyl)phenyl]amino]-1,3 -dihydro-3-oxo- 1-isobenzofuranyl 3-pyridinecarboxylic acid ester CAS NO.: 66898-62-2 Empirical Formula: C21H13F3N2O4 Chemical Structure: Usage: Antiinflammatory & analgesicUbicación : zhongnan road,wuhan,hubei,China...