Wednesday, February 29, 2012

What is Oxygen dehydrogenation catalysts 506HO-1?

Features of Oxygen dehydrogenation catalysts 506HO-1
1 No  need to activate, perennial use, without regeneration.
2 Except hydrogen in low-temperature and high activity.
Application
Oxygen dehydrogenation catalysts 506HO-1 is applied for oxygen, air and oxygen in the atmosphere to except hydrogen purification.
Dehydrogenation is a chemical reaction that involves the elimination of hydrogen (H2). Oxygen dehydrogenation catalysts 506HO-1 is the reverse process of hydrogenation. Dehydrogenation reactions may be either large scale industrial processes or smaller scale laboratory procedures.
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Tuesday, February 28, 2012

How to use oxygen absorbers?

Oxygen Absorbers are a key component to any long-term food storage plan. Oxygen is the No. 1 cause of food spoilage, because it allows pests and molds to grow in your food. Eliminating oxygen in your long-term food storage containers is key to ensuring the longest shelf-life possible. However, oxygen absorbers are finicky creatures, and you need to handle them just so to make sure they work as intended. Read on to learn more.
Figure out the sizes and number of containers you will be filling with food.
Determine the appropriate size oxygen absorbers based on the size of the containers you are using. Mason jars usually require 50 cc oxygen absorbers. You will probably use 100cc or 250cc oxygen absorbers in No. 10 cans. Food grade pails that are 5-gallon and 6-gallon require at least 500cc oxygen absorbers.
Plan on using two to five oxygen absorbers per container, depending on the density of the food you are storing. More dense foods mean less void space in the container, which requires fewer oxygen absorbers. Less dense foods, such as whole oats, leave more void space and require more oxygen absorbers.
Calculate how many Oxygen Absorbers you will need for your food storage, and purchase the appropriate quantity. Oxygen absorbers need to be used within six months of manufacture. They cannot effectively be stored once the original package has been opened.
Prepare all your foods for storage. If you are using Mylar bags, insert them in your containers, and add the food to the containers. If you are not using Mylar bags, add the food directly to the container. Then, and only then, should you open your oxygen absorbers.
Add the appropriate number of oxygen absorbers to each container of food, and seal all containers within 15 minutes of adding the absorbers.
More about: Oxygen Absorber sale
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Monday, February 27, 2012

What is NG stainless steel tube (large capacity of deoxidization tube) used for?



The activation and regeneration:Need
Residual oxygen [hydrogen] (PPM)after purification:O2≤0.1ppm
Application
HNG stainless steel tube (large capacity of deoxidization tube) is used for nitrogen and inert gas chemical adsorption deoxidization.HNG stainless steel tube (large capacity of deoxidization tube) is mainly used for chromatographic spectra, energy, such as carrier gas purification, used in the chemical, electronic, metallurgy, medicine and food, aerospace and other research field of anaerobic operation and ultra pure gas preparation.
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How to find From carbon monoxide, double function of catalysts 506TCO-2?

Features:
1.The high catalytic activity.
2 Wide working temperature range of (120 ° ~ 250 ° c) .
3 CO and O2 can achieve 1ppm below after cleansing.
Application:It is mainly used for O2, CO,H2 containing gas mixture of complex components (excluding olefins) and removal of O2 and CO.
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Thursday, February 23, 2012

Applications of Dehydrogenation catalysts 506HO-2e

Features of Dehydrogenation catalysts 506HO-2
1 Chemical adsorption type.
2. No  need to activate, renew after using .
3  Low temperature except hydrogen, high activity except hydrogen.
4. Normal regeneration.
Application of Dehydrogenation catalysts 506HO-2
It is  applied in nitrogen, acetylene gas etc, and dhea inert gas purification processing CO2. As a highly oxygenated (0.5-2) % of nitrogen, oxygen by hydrogenation after removal of hydrogen, access to excess hydrogen excluding the high purity gases.
All catalysts are used for Sulfuric Acid, Phthalic Anhydride, Maleic Anhydride, Oxichlorination Fixed Bed, Styrene
A catalyst for the nonoxidative production of alkenylaromatics from alkylaromatics, wherein the catalyst is predominantly iron oxide, an alkali metal compound, copper oxide, cerium oxide and less than about 100 ppm of a source for a noble metal, such as palladium, platinum, ruthenium, rhenium, osmium, rhodium or iridium. Additional components of the catalyst may include compounds based on molybdenum, tungsten, calcium, magnesium, chromium and other such promoters.
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Wednesday, February 22, 2012

Features of Demethanizer catalyst 506TJW

Features of Demethanizer catalyst 506TJW
The high activity, good stability of precious metals,long life.
High-temperature resistance.
Good mechanical strength, 27Mpa for maximum resistance.
Application:It is mainly used for removing oxygen catalyst or high levels of oxygen gas methane, the content(methane) <1ppm after purification.
More about: Demethanizer catalyst 506TJW sale
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Tuesday, February 21, 2012

How to use oxygen absorbers


Oxygen absorber is a small packet of material used to prolong the shelf life of food. They are used in food packaging to prevent food colour change, to stop oils in foods from becoming rancid, and also the growth of oxygen-using aerobic microorganisms such as fungi.
Oxygen absorbers are a key component to any long-term food storage plan.
Instructions of Oxygen absorber
1.Figure out the sizes and number of containers you will be filling with food.
2.Determine the appropriate size oxygen absorbers based on the size of the containers you are using. Mason jars usually require 50 cc oxygen absorbers. You will probably use 100cc or 250cc oxygen absorbers in No. 10 cans. Food grade pails that are 5-gallon and 6-gallon require at least 500cc oxygen absorbers.
3.Plan on using two to five oxygen absorbers per container, depending on the density of the food you are storing. More dense foods mean less void space in the container, which requires fewer oxygen absorbers. Less dense foods, such as whole oats, leave more void space and require more oxygen absorbers.
4.Calculate how many oxygen absorbers you will need for your food storage, and purchase the appropriate quantity. Oxygen absorbers need to be used within six months of manufacture. They cannot effectively be stored once the original package has been opened.
5.Prepare all your foods for storage. If you are using Mylar bags, insert them in your containers, and add the food to the containers. If you are not using Mylar bags, add the food directly to the container. Then, and only then, should you open your oxygen absorbers.
6.Add the appropriate number of oxygen absorbers to each container of food, and seal all containers within 15 minutes of adding the absorbers.
More about: oxygen absorbers sale
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Monday, February 20, 2012

Features of Oxygen dehydrogenation catalysts 506HO-1

Features of Oxygen dehydrogenation catalysts 506HO-1
1 No  need to activate, perennial use, without regeneration.
2 Except hydrogen in low-temperature and high activity.
Application:It is applied for oxygen, air and oxygen in the atmosphere to except hydrogen purification.
Dehydrogenation is a chemical reaction that involves the elimination of hydrogen (H2). It is the reverse process of hydrogenation. Dehydrogenation reactions may be either large scale industrial processes or smaller scale laboratory procedures.
More about: Oxygen dehydrogenation catalysts 506HO-1 sale
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Sunday, February 19, 2012

Where to find From carbon monoxide, double function of catalysts 506TCO-2?

Features:
1 Good deoxidizing selection, high activity.
2 Work of low temperature (120 ° c).
3 Cost-effective.
Application:It is  used for multicomponent gas mixture (excluding olefins) to conver catalytic to except carbon monoxide. It is mainly used for O2, CO,H2 containing gas mixture of complex components (excluding olefins) and removal of O2 and CO.
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Thursday, February 16, 2012

What is HAG?

Application
HAG is used for ammonia dehydrogenation and deoxidization.It is mainly used for chromatographic spectra, energy, such as carrier gas purification, used in the chemical, electronic, metallurgy, medicine and food, aerospace and other research field of anaerobic operation and ultra pure gas preparation.
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Wednesday, February 15, 2012

Where to search Effective from pure methane TJW?

Effective from pure methane TJW  is used for oxygen and oxygen gas methane dehydrogenation off from carbon monoxide. Methane is over 20 times more effective in trapping heat in the atmosphere than carbon dioxide (CO2) over a 100-year period and is emitted from a variety of natural and human-influenced sources. Human-influenced sources include landfills, natural gas and petroleum systems, agricultural activities, coal mining, stationary and mobile combustion, wastewater treatment, and certain industrial process. It is mainly used for chromatographic spectra, energy, such as carrier gas purification, used in the chemical, electronic, metallurgy, medicine and food, aerospace and other research field of anaerobic operation and ultra pure gas preparation.
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Tuesday, February 14, 2012

Are you buying Oxygen Absorber?



Oxygen Absorber is a small packet of material used to prolong the shelf life of food. They are used in food packaging to prevent food colour change, to stop oils in foods from becoming rancid, and also the growth of oxygen-using aerobic microorganisms such as fungi.
Oxygen supports the growth of microorganisms and causes changes in color and rancid odors in packaged foods. Plastic packaging is less able to exclude oxygen from packaged foods than are the older glass and metal containers. Oxygen Absorbers absorb oxygen and effectively reduce the aerobic environment to 0% oxygen. Therefore aerobic bacteria and fungi are unable to grow in this environment. This will extend the shelf life of a food product from 1 week to several months. The advantages of oxygen satchels versus vacuum packaging are that the food products are not crushed or squeezed, as some products are of high value and are fragile, and its simplicity of use.
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Monday, February 13, 2012

Description of Deoxidization catalyst 506HL type

Appearance: Black ball φ (2 ~ 6) mm
Description of Deoxidization catalyst 506HL type
1 As soon as it is filled with purify air, it can be put into use.
2 For a period of time after using this catalyst, once the effect of deoxidizing by soaking water drop or failure, and heating to 200 degrees Celsius regeneration.
3  Its use of temperature cannot exceed 45 ° c.
4 The catalyst should avoid contact with chloride and sulfides, in case of failure of poisoning.
Application:It is  used for carbon dioxide, argon oxygen as hydrogenation of inert gases.
More about: Deoxidization catalyst 506HL type
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Sunday, February 12, 2012

What is Deoxidizing tube HTG used for?

Deoxidizing tube HTG is used for hydrogen or hydrogen gas catalytic deoxidization. It is mainly used for chromatographic spectra, energy, such as carrier gas purification, used in the chemical, electronic, metallurgy, medicine and food, aerospace and other research field of anaerobic operation and ultra pure gas preparation.
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Thursday, February 9, 2012

Application of Dehydration tube TWG

Application of Dehydration tube TWG:
It is used as a desiccation.It is mainly used for chromatographic spectra, energy, such as carrier gas purification, used in the chemical, electronic, metallurgy, medicine and food, aerospace and other research field of anaerobic operation and ultra pure gas preparation.
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Wednesday, February 8, 2012

What is Carbon monoxide tube TCO used for?

Carbon monoxide tube TCO is used for inert gas removal of co or co2.It is mainly used for chromatographic spectra, energy, such as carrier gas purification, used in the chemical, electronic, metallurgy, medicine and food, aerospace and other research field of anaerobic operation and ultra pure gas preparation.
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Applications of Silica gel Desiccant

Applications: Telecommunications,  Insulating Glass, Humidity Indicators, Catalyst Carriers,  Buffer Adsorbent, Chromatographic Medias, Flower Drying and Cigarette Filters.
Effect
Some foods, including pepperoni, are packaged with silica gel desiccant. Silica gel Desiccant is included to prevent mold and fungus from growing on the food item. Other foods, especially dry foods like beef jerky, are also packaged with silica gel. In this case the desiccant is necessary to prevent moisture from spoiling or changing the product.
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Tuesday, February 7, 2012

How to Use Deoxidizing tube HTG

Deoxidizing tube HTG is used for hydrogen or hydrogen gas catalytic deoxidization. It is mainly used for chromatographic spectra, energy, such as carrier gas purification, used in the chemical, electronic, metallurgy, medicine and food, aerospace and other research field of anaerobic operation and ultra pure gas preparation.
Hydrogen gas oxygen amount: O23%. This paper describes and analyses principles of the main parts of CRT monitor, and arranges relative experiments for the students to get a working knowledge of the CRT monitor maintenance including experiment on the basic 3 colors with mixed time, experiment on characters of negative electrode of picture tube and deflection coil, experiment on vertical scanning output circuit, and experiment on horizontal scanning output electricity, all of which are characterized by a close combination with corresponding concept, simple procedures and apparatus(multimeter and computer only) .
The activation and regeneration: No need
For building a long-span concrete-filled steel-tube (CFST) curve bridge with an integrated installation tower,one of the key technologies is to control the arch rib alignment of the bridge.Based on the theoretical analysis and the measuring results,the designed arch rib alignment of a existence expanded bridge over give the sack be guaranteed quality by adjusting the length of the cables on-line.The engineering application shows,by using the on-line correcting cablegram technology,that it is economical and in safety for building a long-span CFST arch bridge.
Residual oxygen [hydrogen] (PPM)after purification:O20.1ppm

Monday, February 6, 2012

The Functions of Warfarin metabolite 2

Warfarin metabolites 2, Stereochemical aspects of protein binding and displacement reaction by phenylbutazone.Warfarin metamorphosis may be inhibited through drug-drug interactions, including amiodarone and statins.
The in vitro human serum albumin binding characteristics of the enantiomers of the major metabolites of warfarin [6-hydroxywarfarin (6-HW), 7-hydroxywarfarin (7-HW), (S)-warfarin alcohols [(S,S)- and (S,R)-WA], and (R,S)-warfarin alcohol [(R,S)-WA]] have been studied, using a stereospecific HPLC assay. Warfarin metabolites are less bound both within plasma and a 40 g/liter solution of human serum albumin than the enantiomers of warfarin. The decreased warfarin metabolites have a lower fraction unbound [1.33% for (S,R)-WA, 2.09% for (S,S)-WA, and 1.04% for (R,S)-WA] than hydroxylated metabolites [3.24% for (R)-6-HW, 4.26% (S)-6-HW, 4.49% for (R)-7-HW and 4.27% for (S)-7-HW] to HSA. Phenylbutazone produced a concentration-dependent increment in the unbound fraction of all metabolites. It was possible to predict the unbound fraction of warfarin metabolites based on the unbound fraction of warfarin enantiomers.
More information: Warfarin metabolite 2

Friday, February 3, 2012

The Effection of D-Altritol

D-Altritol nucleosides with adenine and uracil bases are obtained by nucleophilic opening of the epoxide ring of 1,5:2,3-dianhydro-4,6-O-benzylidene-D-allitol using the 1,8-diazabicyclo[5.4.0]undec-7-ene salts of the above-mentioned salts.
The linear hexitol altritol has only been identified in six genera, all of them in the order Fucales of the brown algae. Five of these genera are closely related according to molecular phylogenetic and other data, while the sixth (Notheia) is an obligate epiphyte on two other altritol-containing genera with which it is symphanic.
The possibility that Notheia obtains altritol from the algae on duty which it comprises epiphytic rather than by synthesizing altritol independently was investigated by supplying 13C-inorganic carbon in the light followed by mass spectrometric and nuclear magnetic resonance analysis. Notheia separated from the phorophyte Hormosira during vulnerability to 13C showed 13C enrichment in both altritol and mannitol, while the Hormosira only showed significant labelling of mannitol.
These data show that altritol can be synthesized from Notheia, with entailments for the number of gains and losses of the capacity to synthesize altritol in the evolution of the Fucales.
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Thursday, February 2, 2012

The Application of Drying Agent

Oil drying agents for compounds that speed up the hardening of oils, often used in painting. Activated alumina ¹ is a very porous form of aluminum oxide of high surface area which adsorbs liquids and gases without any change in form. Activated alumina will not soften or disintegrate when immersed in liquids.
There are various ways of removing water and other impurities from a solution. This can become a major task once the exploited reagents are also excitable towards water e.g. Grignard reagents or enolates. If water is one of the products, it also experiences a detrimental effect on-duty the concede and/or reaction rate. Activated alumina may be regenerated to its original adsorption efficiency by heating to a temperature between (177-316°C).
The drying agents commonly used in the organic laboratories are calcium chloride (CaCl2), sodium sulfate (Na2SO4) Calcium sulfate (CaSO4, as Drierite (R)) and magnesium sulfate (MgSO4), all in their anhydrous form. In those cases, drying agents like activated alumina¹, calcium hydride (CaH2), sodium metal (in combination with benzophenone which forms a dark blue ketyl radical), lithium aluminum hydride (LiAlH4) or phosphorous pentoxide (P4O10) are used to chemically destroy the water.
A good rule of thumb for predicting solubility in water is to assume that any molecule having six or more carbons and 0-1 functional group will be insoluble in water. Molecules having the described structural characteristics have physical properties that reflect the dominance of the hydrophobic hydrocarbon portion of the molecule.
 
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Wednesday, February 1, 2012

The Application of Deoxypodophyllotoxin

Deoxypodophyllotoxin (DPT), a naturally occurring flavolignan with anti-inflammatory activity, was isolated from Anthriscus sylvestris Hoffm, and has been known inhibit the expression of MMP in tumor necrosis factor-alpha (TNF-alpha) stimulated human aortic smooth muscle cells (HASMC). It is also known as deoxypicropodophyllin, deoxypodophyllotoxin or (5R-(5alpha,5aalpha,8aalpha))-isomer and deoxypodophyllotoxin.
This study examined the effect of a podophyllotoxin derivative, deoxypodophyllotoxin (anthricin), which is a medicinal herb product isolated from Anthriscus sylvestris Hoffm. Deoxypodophyllotoxin was tested in a rat PCA (passive cutaneous anaphylaxis) assay by administering deoxypodophyllotoxin intraperitoneally (1.0 to 10 mg/kg, i.p.) and intravenously (0.25 to 1.0 mg/kg, i.v.).
Deoxypodophyllotoxin dose-dependently inhibited the PCA reaction sparked off by anti-dinitrophenyl (DNP) IgE. The PCA inhibitory activity of deoxypodophyllotoxin was stronger than those of prednisolone and indomethacin, which were used as positive controls. These results suggest that deoxypodophyllotoxin may be beneficial in regulating the immediate-type allergic reaction.
More information: Deoxypodophyllotoxin
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