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Topic: Chemical series


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In the News (Sat 15 Dec 18)

  
  Chemical Online:Sourcing for Chemical Manufacturing, chemical engineering, chemical processing
DSM Pharma Chemicals, a business unit of DSM Pharmaceutical Products, is a global provider of custom manufacturing services to the pharmaceutical industry.
Chemical Online takes pride in providing you with a broad range of industry-specific advertisers to meet your needs.
Ultraviolet disinfection is an ideal alternative to chemical addition systems and can be used as a bolt in multi-barrier approach to your disinfection process.
www.chemicalonline.com   (818 words)

  
  Bambooweb: Chemical series
A chemical series is a group of chemical elements whose physical and chemical characteristics vary progressively from one end of the series to another.
Chemical series were discovered before the creation of the periodic table of the chemical elements, which was created to try to organise the elements according to their chemical properties.
Several chemical series correspond exactly to periodic table groups: this is not a coincidence, as the physical properties that group them arise from the same atomic orbital configurations that place them in the same group in the periodic table.
www.bambooweb.com /articles/c/h/Chemical_series.html   (114 words)

  
 Chem-Tech Series CTP Chemical Metering Pump
The Series CTP Chemical Metering Pump offers a bold new look in reliability and value and is available in three control options offering feed rates up to 60 GPD (9.5 LPH) with pressures to 125 PSI (8.6 bar).
Both Series CTP-A and Series CTP-AE models are available with optional 7-day timers for biocide feed or other timed applications.
For applications requiring precise feed rates, the Series CTP-D offers digital control from 10% to 100% up to 60 GPD (9.5 LPH).
www.pulsatron.ca /chem_tech_ctp_chemical_metering_pump.htm   (205 words)

  
 Chemical Demonstrations Series
Bassam Z. Shakhashiri and collaborators describe a wide range of demonstrations for displaying chemical phenomena in science classrooms at all levels.
The hazards section details the specific potential dangers of every hazardous chemical used in the demonstration and, where appropriate, additional potential hazards associated with the demonstration.
The series is also being translated into Japanese.
scifun.chem.wisc.edu /demoser.html   (243 words)

  
 Electro-Chemical Series of Metals K-12 Experiments for Lesson Plans & Science Fair Projects
Electro-Chemical Series of Metals K-12 Experiments for Lesson Plans & Science Fair Projects
Students will be able to observe and record the corrosive nature of oxidation-reduction reactions and to determine the electro-chemical series of selected metals (relative strengths of oxidizing and reducing agents).
Which chemical reagent (ferro or ferri) would you use to check for rust on iron?
www.juliantrubin.com /encyclopedia/chemistry/metalseries.html   (1155 words)

  
 Water Metering Pump | Chemical Metering Pump
Water Metering Pumps, LMI Milton Roy, Chemical Metering Pumps
Series B and C Chemical Metering Pumps have been an industry standard for over 20 years.
The Series P Metering Pump is designed for more economical chemical injection.
www.pumpsandcontrols.com /water-pumps.html   (92 words)

  
 Chemical Fume Hoods, Chemical Hood, Portable Fume Hood - AirClean Systems
Designed to provide a low cost chemical hood solution for protection of the operator and environment from toxic vapors, gases, fumes, and particulate.
The AC600 Series ductless chemical workstation features the use of molded thermoplastics configured for a variety of common applications.
The chemical fume hood filter and electronics are located above the work area, eliminating the chance of a chemical spill entering these sensitive areas.
www.aircleansystems.com /OP_A600.htm   (260 words)

  
 March SERIES 10 Chemical Pumps
The Series 10 is used in a wide variety of chemical and industrial applications including handling chemicals of all kinds with capacities to 210 GPM, 170 ft. head.
Pumps of Kynar plastic construction are designed to handle difficult solutions such as strong halogen solutions and certain strong chromic or sulfuric acid solutions.
Transfer pump for many acid and caustic chemicals, waste water treatment plants, strong chromic or sulfuric acid solutions.
www.marchparts.com /series/p24_2.php   (83 words)

  
  NationMaster - Encyclopedia: Chemical Formula
Its chemical formula can be rendered as CH If there were a double bond between the carbon atoms (and thus each carbon only had two hydrogens), the chemical formula may be written: CH, and the fact that there is a double bond between the carbons is assumed.
In chemistry, the empirical formula of a chemical is a simple expression of the relative number of each type of atom or ratio of the elements in the compound.
In chemistry, a homologous series is a series of organic compounds with a similar general formula, possessing similar chemical properties due to the presence of the same functional group, and shows a gradation in physical properties as a result of increase in molecular size and mass (see relative molecular mass).
www.nationmaster.com /encyclopedia/Chemical-Formula   (2317 words)

  
  Reference.com/Encyclopedia/Chemical series
A chemical series is a group of chemical elements whose physical and chemical characteristics vary progressively from one end of the series to another.
Chemical series were discovered before the creation of the periodic table of the chemical elements, which was created to try to organise the elements according to their chemical properties.
Several chemical series correspond exactly to periodic table groups: this is not a coincidence, the physical properties that group them arise from the same atomic orbital configurations that place them in the same group in the periodic table.
www.reference.com /browse/wiki/Chemical_series   (135 words)

  
 Chemical Peeling & Skin Rejuvination
Chemical peel is a surgical procedure in which Dr. Rapaport applies certain chemical agents to the skin in a controlled manner.
There are two types of chemical peel techniques: one is a light or medium peel used to remove superficial wrinkles; the other a deep peel, for more severe conditions.
Rapaport has developed a series of light, and light medium peels that duplicate the results of a medium depth procedure without many disadvantages.
www.jrapaport.com /chemical_peels.htm   (285 words)

  
 NationMaster - Encyclopedia: Neptunium
A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the elements.
In chemical nomenclature, the oxidation number (formerly known as the Stock number) of an element in a molecule or complex is the charge that it would bear if all the ligands were removed along with the electron pairs that were shared with the central atom.
The chemical elements labelled as synthetic are unstable, with a half-life so short (ranging from a fraction of millisecond to a few million years) relative to the age of the Earth that any atoms of that element that may have been present when the Earth formed have long since...
www.nationmaster.com /encyclopedia/Neptunium   (4559 words)

  
 Chemical Equations
A chemical equation is the shorthand that scientists use to describe a chemical reaction.
To write a chemical equation correctly, the number of atoms on the left side of a chemical equation has to be precisely balanced with the atoms on the right side of the equation.
To balance the chemical equation we must add the coefficient "2" in front of the oxygen molecule on the left side of the equation, showing that two oxygen molecules are consumed for every one methane molecule that burns.
www.visionlearning.com /library/module_viewer.php?mid=56   (1149 words)

  
 LMI Chemical Metering Pumps
Series A, B and C Chemical Metering Pumps have been an industry standard for over 20 years.
The totally enclosed, chemically resistant housing and encapsulated electronics provide the performance and long life that you've come to expect from an LMI Pump.
The Series J5 Metering Pump is designed for remote applications where AC electrical power is unavailable.
www.spscompany.com /lmi.htm   (442 words)

  
 Lets talk gemstones: Garnet Gropue Pyralspites
The chemical composition of the intermediate members of the series grades almandine to pyrope as the presence of iron decreases and magnesium increases.
As the ratio of iron to manganese increases and the chemical composition grades from spessartite to almandite, the refractive index rises and brown tones appear.
An intermediate member of a garnet series is often said to contain a “mixture of the molecules” of the end members of the series.
www.attawaygems.com /NMFG/Lets_talk_gemstones_Garnet_Pyralspites.html   (2823 words)

  
 Metering Pumps - Liquid Logic Company
Series A, B and C Chemical Metering Pumps have been an industry standard for over 20 years.
The Series E Metering Pump is designed for use in hazardous environments.
The Series J5 Metering Pump is designed for remote applications where AC electrical power is unavailable.
www.liquidlogictanks.com /metering.html   (563 words)

  
 Jensen Series 500 - Over 15,000 Mixers in Service Worldwide
The Jensen Series 500 Mixer is the only side entry mixer designed for use in chemical service requiring 316SS corrosion resistant wetted metal parts.
The Series 500 feature Jensen's 3-Blade marine type propellers each uniquely pitch adjusted to draw 90% available motor horsepower for the specific application so as to maximize the thrust that is necessary for blending tank cargos.
Jensen Series 500 High Temperature and Asphalt Mixers are the only mixers which allow use of modern, efficient mechanical seals in these services.
www.nciweb.net /chemicalmixers.htm   (744 words)

  
 Johannes Stark - Nobel Lecture
Moreover, the abundance of chemical compounds and their importance in daily life hindered the chemist from investigating the question, in what does the individuality of the atoms of different elements consist.
Thus the effects on the hydrogen series, on the series of mono- and bivalent positive atomic helium ions, on the series of lithium, mercury, and aluminium, differ from one another in characteristic ways.
Along a series of lines running from longer to shorter wavelengths the effect of the electric field becomes greater as the serial numbers increase - that is, as the wavelength decreases.
nobelprize.org /nobel_prizes/physics/laureates/1919/stark-lecture.html   (3387 words)

  
 S-4000 SERIES FURAN CHEMICAL RESISTANT GROUTS
S-4000 Series is a two-part (liquid resin and powder catalyst) grout system for use where chemical resistance is important.
When properly cured, S-4000 Series is resistant to most non-oxidizing acids, alkalies, solvents, oils, greases, salts, detergents and steam cleaning up to 350 degrees F. The use of S-4000 Series requires a waxed tile/brick surface and appropriate installation skills.
S-4000 Series grout is recommended for use in bakeries, breweries, bottling plants, dairies, distilleries, canneries, chemical plants, commercial kitchens, electroplating plants, food processing plants and meat packing plants.
www.summitville.com /S4000.htm   (632 words)

  
 Process Engineering | Chemical processing definition | Chemical Processing
Chemical reactions are characterized by a chemical change, and they yield one or more products which are, in general, different from the reactants.
Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions.
In biochemistry, series of chemical reactions form metabolic pathways, since straight synthesis of a product would be energetically impossible in conditions within a cell.
www.chemicalprocessing.com /experts/answers/2006/080.html   (357 words)

  
 Chemical Peel
During a chemical peel, a chemical solution is applied to the face.
A chemical peel can be used to treat fine wrinkles, mild scarring, types of acne, sun spots and other sun damage, age spots, liver spots, freckles and blotchiness.
Rapaport has developed a series of medium peels that duplicate the results of a deeper procedure without the long and inconvenient recovery time.
www.cosmeticskin.com /skin-peel.shtml   (369 words)

  
 Welcome To American Academy of Cosmetic Surgery
Chemical peels are used to treat a variety of skin conditions.
In many cases, wrinkles caused by sun damage, aging, and heredity can be reduced and even eliminated through the use of a series of chemical peels.
The strength of the chemical peel is determined by the patient’s individual skin type and the degree of damage to the skin.
www.cosmeticsurgery.org /Patients/chemicalpeels.asp   (155 words)

  
 Achromatic limited - Chemical Dosing
The Series P Metering Pump is designed for more economical chemical injection.
Economic and robust the Series G Metering Pump is designed for applications where increased outputs are required.
The combination of a Series G metering pump and a motor controller enables Model G Pulse to be used in proportional metering applications.
www.achromatic.co.uk /chemical_dosing.htm   (1446 words)

  
 Lagniappe
But the fact of chemical warfare would have been immediately clear, even if the specific agent was new and unknown, and the retaliation would surely have been terrible.
The chemical routes were just as nasty, though - they still hadn't found a way around the fluorine reagents, and Sarin has a fluorine group directly bonded to the phosphorus.
The use of chemical agents in World War I, for example, evolved from opening cylinders and letting the wind blow the stuff across no-man's-land (in early 1915) to various types of sophisticated gas artillery shells.
dlowe.blogspot.com /2002_09_01_dlowe_archive.html   (13571 words)

  
 NationMaster - Encyclopedia: Sulfate
A chemical compound is a chemical substance formed from two or more elements, with a fixed ratio determining the composition.
There is a negative radiative forcing from aerosols because, while in the atmosphere, they reflect incoming solar radiation.
Acid rain occurs when sulfur dioxide and nitrogen oxides are emitted into the atmosphere, undergo chemical transformations and are absorbed by water droplets in clouds.
www.nationmaster.com /encyclopedia/Sulfate   (1279 words)

  
 ChemFlow Systems, Inc.
The CFB series unit provides 2 GPM blending of up to 3 chemicals and delivers high purity or CMP chemicals to a single or multiple tools.
Chemical is introduced into each vessel until the desired volume is reached.
The blended slurry or chemical is then transferred to the Delivery Unit of the system by pressure.
www.chemflowsys.com /Products/CFBseries/pCFB.htm   (531 words)

  
 Eldex Optos Series Pumps
Optos Series chemical metering pumps can be used wherever precise flow rate control, particularly at high pressures, is required.
Eldex's Optos Series incorporates knowledge gained from over 30 years of experience in designing and manufacturing reciprocating piston pumps for a wide variety of applications, while integrating the latest technology and electronics.
Optos Series metering pumps can be made with PEEK liquid end assemblies, as opposed to the usual type 316 stainless steel, eliminating all metal contact in the flow path.
www.eldex.com /chemical_metering_pumps.htm   (611 words)

  
 Series 32F Chemical Induction Feeder Mixers
The series 32F flanged design allows the chemical to be vacuum inducted and flash mixed directly into low pressure pipelines, tanks, or open vessels with superior velocity gradient mixing intensity.
Pressured applications require chemicals in liquid form and metering pump equipment to overcome head pressure at the point of operation.
The series 32F are available in 4 in., 6 in., and 8 in.
www.wateronline.com /Content/ProductShowcase/product.asp?DocID={5B7B6428-EDDB-11D2-94BD-00A0C9B3BDF2}&VNETCOOKIE=NO   (123 words)

  
 Stainless Steel Submersible - Mastrrr Company's Gas Mastrrr Series 32 - chemical blending flash mixers, chemical ...
submersible design allows the chemicals to be flash mixed directly into the water stream, channel, chamber, or rapid mix box with superior velocity gradient mixing intensity.
The unit is available in vacuum style for gas or liquid chemical induction, or nonvacuum style for liquid flash mixing.
The units are available in vacuum, nonvacuum, or a combination for dual chemical feed.
www.gasmastrrr.com /series32.html   (235 words)

  
 MBARI's Equatorial Pacific TAO Moorings - Introduction
Biological and chemical oceanographers are now looking to continuous observations so they can also determine the spectrum of variability and, when taken concurrently with the physical and meteorological observations, determine the relation to climate and ocean variability.
The paucity of biological and chemical time series has been due, in part, to the lack of adequate instrumentation; however, increased effort has recently been placed on the development of chemical and bio-optical instrumentation for the collection of these time series.
The long-term goal of the study is to obtain continuous time series of biological and chemical properties on a time scale that is equivalent to measurements of currents, winds and temperature structure.
www.mbari.org /bog/projects/eqpac/introduction.htm   (808 words)

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