AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsTechnology, Industry, AgricultureHealth Care
MagnesiumMagnesium SulfateMagnesium DeficiencyMagnesium CompoundsMagnesium OxideMaterials TestingEdetic AcidComposite ResinsCuring Lights, DentalWater SofteningDental MaterialsSurface PropertiesTabletsSelf-Curing of Dental ResinsHalogensDental EquipmentDental VeneersMagnesium HydroxideDental PolishingTechnology, DentalDental Stress AnalysisMagnesium ChlorideDental Casting TechniqueResin CementsPliabilityResins, SyntheticExcipientsSiloxanesDental PorcelainInlaysOrganically Modified CeramicsElastic ModulusDental EnamelPolymerizationEnergy DrinksPolymethacrylic AcidsDental Restoration, PermanentMaxillofacial ProsthesisChemistry, PharmaceuticalTooth, ArtificialDental Restoration WearCalciumTitaniumCarbon Compounds, InorganicDental Casting InvestmentMicroscopy, Electron, ScanningWaterElectron Probe MicroanalysisAcrylic ResinsCompressive StrengthCeramicsPowdersMasticationMethacrylatesDenture, Partial, TemporaryProsthesis ColoringCalcium CarbonateColorDrug CompoundingMethylcelluloseMicroscopy, Scanning ProbeDentinAluminum SilicatesElasticityAnalysis of VarianceSemiconductorsTime FactorsDiamondHydrogen-Ion ConcentrationPhase TransitionTooth DemineralizationLubricantsPovidoneCations, DivalentZirconiumSolubilityImmersionBisphenol A-Glycidyl MethacrylatePolymethyl MethacrylateTensile StrengthDrug StorageSilanesGlass Ionomer CementsNanocompositesHoof and ClawChelating AgentsWater SupplyPolymersPhosphorusTechnology, PharmaceuticalZincStatistics, NonparametricMetal Ceramic AlloysGold AlloysMechanical PhenomenaPolyurethanesTablets, Enteric-CoatedMineralsTemperatureKinetics
AlkalinityIons such as calciumTitrationTetrasodium EDTAMineralsAminopolycarboxylic AcidsTitratePotassiumChlorideNitrateSodiumIndicatorPhosphateAcetic AcidDisodiumSaltsSoapMohs0.01AmmoniumEthylenediaminetetraaceticChelantCaCO3TitrationsAcidChlorophyllAmountsIncreasesPrecipitationCommonlyLimestoneScaleChelationHard waterIronEnhancesTemporaryMetalSufficientTotalDefinitionStableMetallicSolutionGeologicalConcentrationContentComplexAdditionFormPrimary
Alkalinity10
  • The terms alkalinity and hardness are often used interchangeably when discussing water quality. (ufl.edu)
  • The objectives of this document are to provide readers with 1) an overview of alkalinity and hardness, 2) an understanding of the importance of alkalinity and hardness from management and ecological perspectives, 3) a summary of methods for measuring each, and 4) the current state regulations for each in public waters of Florida. (ufl.edu)
  • Water alkalinity and hardness are primarily a function of 1) the geology of the area where the surface or groundwater is located and 2) the dissolution of carbon dioxide (CO 2 ) from the atmosphere. (ufl.edu)
  • The ions responsible for alkalinity and hardness originate from the dissolution of geological minerals into rain and groundwater. (ufl.edu)
  • Surface and groundwater sources in areas with limestone formations are especially likely to have high hardness and alkalinity due to the dissolution of bicarbonates and carbonates. (ufl.edu)
  • Alkalinity and hardness are related through common ions formed in aquatic systems. (ufl.edu)
  • Specifically, the counter-ions associated with the bicarbonate and carbonate fraction of alkalinity are the principal cations responsible for hardness (usually Ca ++ and Mg ++ ) (Equations 3 and 4). (ufl.edu)
  • Boiler is heart of industires, When matter comes for ship's boiler we have specialized maring grade boiler chemicals like combitreat, One shot Multi plus, oxygen control, Sludge conditioner, Hardness and alkalinity control, pH booster, Morpholine etc many classified products are in this group for SHIPPING INDUSTRIES. (marinechemical.in)
  • Water quality was in general characterized by high pH, alkalinity, and hardness, derived from the calcarcous nature of the bedrock. (unam.mx)
  • Maintains PH, Alkalinity Hardness, and Salinity. (prionsbiotech.com)
Ions such as calcium4
  • If the indicator turns from blue to pink, metal ions such as calcium and magnesium are present. (wardsci.com)
  • In our case the metallic ions such as calcium, magnesium, iron, etc. are bound by the "claw" and kept from reacting with other products that might form precipitates, etc. (makeyourown.buzz)
  • or the inability of maintaining hardness ions such as calcium in solution at high pH levels. (justia.com)
  • Moreover, these compositions are effective in maintaining hardness ions such as calcium, aluminum, and iron in solution in the pH 9-14 range. (justia.com)
Titration5
  • When used as an indicator in an EDTA titration, the characteristic blue end-point is reached when sufficient EDTA is added and the metal ions bound to the indicator are chelated by EDTA, leaving the free indicator molecule. (wikipedia.org)
  • Ethylenediaminetetraacetic acid (EDTA), also known by several other names, is a chemical used for both industrial and medical purposes EDTA solution will be standardize by titration against a standard solution made from calcium carbonate, CaCO3. (microsidd.com)
  • The calcium content of this stock solution is determined by complexometric titration with the disodium salt of (ethylenedinitrilo)tetraacetic acid (EDTA) using a mixture of Mordant Black 11 (C.I. 14645) and methyl red as indicator. (iteh.ai)
  • Reaction between EDTA and Ni 2+ ions is relatively slow, so titration should be carried out slightly slower than in other direct EDTA determinations. (titrations.info)
  • To perform titration we will need titrant - 0.01 M EDTA solution , 10% ammonium chloride and concentrated ammonium solution . (titrations.info)
Tetrasodium EDTA2
  • The way that body washes and shampoos often reduce the amount of soap scum build-up is by adding and ingredient called Tetrasodium EDTA. (soapcult.com.au)
  • Tetrasodium EDTA is a chelator (amongst other cosmetic properties), which means that it neutralises the metal ions in hard water, making the water softer so that soap scum takes longer to build up on surfaces. (soapcult.com.au)
Minerals7
Aminopolycarboxylic Acids1
  • The stability of the chelate complex formed is the reason why this type of chelant (aminopolycarboxylic acids), including EDTA (ethylenediaminetetraacetic acid), NTA (nitrilotriacetic acid), and DTPA (diethylenetriaminepentaacetic acid), are widely used in various water treatment applications. (waterlinepublication.org.uk)
Titrate2
Potassium1
Chloride3
Nitrate2
  • Cooling system cleaning solutions containing an EDTA salt, a polyhydroxy mono- or dicarboxylic sugar acid, and a soluble nitrate salt are effective in removing scale, corrosion, and solder bloom from cooling systems. (justia.com)
  • These and other objects have been achieved through the use of cleaning solutions comprising EDTA salts, salts of a polyhydroxy mono- or dicarboxylic sugar acid, sodium or ammonium nitrate, and optionally, nitric acid and/or preferably a corrosion inhibitor. (justia.com)
Sodium2
  • 2 The process of transforming and precipitating Ca2+ and Mg2+ metals into water soluble and non-water soluble compounds when performing processes for water hardness or the process of replacement of Ca2+ and Mg2+ elements with sodium element as with zeolite is referred to as softening of hard water. (k12.tr)
  • EDTA removes calcium from soap film and converts it to the soluble sodium soap, which can be easily rinsed. (makeyourown.buzz)
Indicator2
  • Eriochrome Black T is a complexometric indicator that is used in complexometric titrations, e.g. in the water hardness determination process. (wikipedia.org)
  • I will carry out before and end titations with EDTA as an indicator, for accuracy I would like a large change in calcium ion concentration with in the solution. (chemicalforums.com)
Phosphate1
  • The materials above also effect the calcium : magnesium (Ca:Mg) ratio resulting in reduced plant uptake of the primary nutrient phosphorus (phosphate) and the secondary nutrient Magnesium along with some micro-nutrients resulting in plants displaying nutrient deficiencies. (aquariumcoop.com)
Acetic Acid2
  • I wanted to investigate what was the water hardness of the samples used and to which hardness standard these samples conform by using the EDTA (Ethylene Diamine Tetra Acetic Acid) method and by determining the calcium and magnesium amounts and total hardness ratios. (k12.tr)
  • Dissolve 3.722 gms EDTA(Ethylene Diamine Terra Acetic Acid) to one Litre distilled water. (textilelearner.net)
Disodium2
  • Disodium edetate, commonly known as EDTA, serves various medical and non-medical purposes. (mrmed.in)
  • Disodium edetate (EDTA) is primarily administered intravenously (IV). (mrmed.in)
Salts3
  • water hardness: The property resulting from the presence of Calcium and magnesium salts and, in special cases, salts of strontium and/or barium. (iteh.ai)
  • Carbonate hardness is usually due to the presence of bicarbonate [Ca(HCO 3 ) 2 and Mg(HCO 3 ) 2 ] and carbonate (CaCO 3 and MgCO 3 ) salts. (ufl.edu)
  • The EDTA salts suitable for use in the subject invention include the common alkali metal and ammonium salts of EDTA. (justia.com)
Soap4
  • Water hardness is defined as the feature of water to consume soap (without foaming). (k12.tr)
  • Hardness is most commonly associated with the ability of water to precipitate soap. (ufl.edu)
  • As hardness increases, more soap is needed to achieve the same level of cleaning due to the interactions of the hardness ions with the soap. (ufl.edu)
  • When hard water (water with a high calcium and magnesium content) is combined with most kinds of soap products (including shampoo, body wash etc.) and the dirt/oil/skin cells being washed from your body, it will begin to form what we call, soap scum. (soapcult.com.au)
Mohs1
0.011
Ammonium1
  • 99.75 % ) 13 2 propanol ip: 45 g / isopropanol, 1 propanol: 30 g / n propanol ethyl hexadecyl dimethyl ammonium ethylsulphate: 0.2 g emollient and moisturiser with skin protecting substances 500 ml bott with dispenser passes en 13727, en13624, en14476, en1500, en12791 standards, pack size: 500 ml bottle 14 4 methylumbelliferone ( 100gm ) ( purity ( hplc ) =98 %, mol. (jharkhandtenders.net)
Ethylenediaminetetraacetic1
  • Investigation of, Calcium (Ca2+) and Magnesium (Mg2+) effects on water hardness and taste by using EDTA (Ethylenediaminetetraacetic Acid) Method and clarification between pH and total hardness. (k12.tr)
Chelant1
  • Effectively, a chelant (for example EDTA/NTA) "traps" the metal ion, inhibiting it from reacting with other ions. (waterlinepublication.org.uk)
CaCO31
  • TEST MEDIA: Purified water or synthetic hard water (hardness 211 ± 5 ppm as CaCO3), plus river sediment obtained from the National Bureau of Standards. (europa.eu)
Titrations1
Acid3
  • The specific choice of aminopolycarboxylic acid (NTA, EDTA, DTPA etc.) to be used will depend on various factors including the pH of the system, how oxidising the environment is and the type of metal ion to be chelated. (waterlinepublication.org.uk)
  • No. 4,540,443 is disclosed a cleaning solution effective for removing solder bloom, containing a salt of EDTA, a salt of citric acid, and a soluble salt of nitric acid, optionally containing also an aluminum corrosion inhibitor. (justia.com)
  • Various traces of other metals change its properties significantly: the addition of small amounts of antimony or copper to lead increases the alloy's hardness and improves corrosion resistance from sulfuric acid. (cargohandbook.com)
Chlorophyll2
Amounts1
  • Water is considered hard when it contains high amounts of calcium-carbonate and magnesium. (nuvoh2o.com)
Increases1
  • Using these materials increases the pH to alkaline which makes 95% or more of the EDTA chelated iron in Easy Green unavailable to plants. (aquariumcoop.com)
Precipitation3
  • This situation continues until precipitation of all the ions causing hardness. (k12.tr)
  • Used as the primary builder as EDTA is stable to hydrolysis and eliminates scale and precipitation from occurring in the machine and carpet. (makeyourown.buzz)
  • Moderate to high hardness water of 150-500 ppm can be partially softened by precipitation of the offending species. (textilelearner.net)
Commonly1
  • However, we don't use artificial or unhealthy products commonly associated with Chelation such as EDTA. (nuvoh2o.com)
Limestone2
  • Nov 28, 2019 LimestoneHardness - What order do limestone,granite and marble in terms of their hardness? (ententemulhousehandball.fr)
  • Porosity, hardness and bulk density were highly correlated to each other, thus measured the same aspect of limestone reactivity. (ententemulhousehandball.fr)
Scale4
  • Water hardness tests typically only measure the amount of calcium in your water and still detect calcium-citrate, even though it doesn't contribute to scale build up or hard water effects. (nuvoh2o.com)
  • As the citrus clears away existing scale, the extra calcium-citrate may make the hardness of your water appear to go up. (nuvoh2o.com)
  • The extreme conditions in which these materials function are ideal for the formation of a variety of corrosion products such as metal oxides, hydroxides, and carbonates, as well as for the deposition of scale, particularly when "hard" water, i.e. water containing appreciable quantities of magnesium, and/or calcium ions is used. (justia.com)
  • It would be desirable to prepare a cleaning solution for cooling systems which is effective in removing all common manner of scale and corrosion, in removing solder bloom, in maintaining hardness ions in solution even in highly alkaline environments, and which does not utilize phosphates in its composition. (justia.com)
Chelation1
  • This chelation process involves EDTA binding to the metal ions, creating water-soluble complexes that are easily excreted through the kidneys, effectively removing the toxic metals from the bloodstream. (mrmed.in)
Hard water3
Iron3
  • This condition of becoming potable is generally achieved by dilution or softening using various methods and by reducing and even eliminating of various elements (calcium, magnesium, iron) in water. (k12.tr)
  • Overall, we were able to relate the mineral (iron, calcium) content with the mechanical parameters (hardness and Young's modulus) and the breaking force and stress in every tooth type. (biomedcentral.com)
  • In addition to Ca ++ and Mg ++ , iron (Fe ++ ), strontium (Sr ++ ), and manganese (Mn ++ ) may also contribute to hardness (APHA et al. (ufl.edu)
Enhances1
  • The formulas will require EDTA as EDTA enhances the efficacy. (makeyourown.buzz)
Temporary2
Metal3
  • I thought about reasons for the difference between this water, what kind of metal-based softening was made when softening water hardness, factors they were dependent on and how they changed or did not change. (k12.tr)
  • EDTA has a stronger affinity for the metal ions than EBT so when EDTA is added it replaces the EBT and the EBT returns to its blue, uncomplexed color. (wardsci.com)
  • It turns red when it forms a complex with calcium, magnesium, or other metal ions. (wikipedia.org)
Sufficient1
Total2
  • Total hardness equals the sum of carbonate and noncarbonate hardness. (ufl.edu)
  • Total Hardness= Volume of EDTA * 10 ppm. (textilelearner.net)
Definition1
Stable1
  • The rate of this sensory reaction was significantly enhanced in the presence of EDTA, which was used as a ligand to obtain a stable complex of Mn(III)/EDTA. (caponigroconstruction.com)
Metallic1
  • Desilvered lead is freed of bismuth according to the Betterton-Kroll process by treating it with metallic calcium and magnesium, which forms a bismuth dross that can be skimmed off. (cargohandbook.com)
Solution2
  • Dilute solutions of the hardness required are prepared by dilution of appropriate volumes of the stock solution. (iteh.ai)
  • For instance, if you have a solution of a calcium-EDTA complex, and add a copper ion to that solution, the copper will displace the calcium giving you copper-EDTA chelate. (waterlinepublication.org.uk)
Geological1
  • A comparison of the hardness values in different areas influenced by geological features can be made, if applicable. (scienceinschool.org)
Concentration3
Content1
  • The students should assess the values indicated on a water certificate of analysis (e.g., pH, nitrogen content, hardness, etc.) and describe the possible health risks associated with noncompliance. (scienceinschool.org)
Complex1
  • This means that if you look at the above table, in a system containing Fe 3+ , Cu 2+ , Fe 2+ and Ca 2+ any EDTA added will complex the Fe 3+ first, before complexing with the Cu 2+ and then the Fe 2+ . (waterlinepublication.org.uk)
Addition1
  • Addition of a small amount of EDTA or HEEDTA will prevent this. (makeyourown.buzz)
Form1
Primary1
  • If hardness is one of your primary concerns when selecting a countertop material, granite and gemstone will be your best bets. (ententemulhousehandball.fr)