lead sulfide color

Pb 2+ + H 2 S → PbS↓ + 2 H + This reaction is used in qualitative inorganic analysis. For white lead specimens, six kits three sulfide-based and three rhodizonate-based gave low percents of false negatives ({less than or equal to} 2 %) and met the proposed criterion for acceptance as a negative screen for lead-based paint. Only very hot objects emit radiation in these wavelengths. Bismuth(III) sulfide is a brown solid. Summary: The protein encoded by this gene may function in mitochondria to catalyze the conversion of sulfide to persulfides, thereby decreasing toxic concencrations of sulfide. Airtight sealed, avoid light and keep dry at room temperature. Comparisons with samples of known sulfide concentration make the technique roughly quantitative. Lead sulfide appears as black to silvery powdery or crystalline solid. X-Ray diagram of the studied sulfide scale samples which showed main component of zinc sulfide and lead sulfide. Hydrogen sulfide reacts with metal ions to form metal sulfides, which are insoluble, often dark colored solids. . [5] In fact, lead sulfide was one of the earliest materials to be used as a semiconductor. Lead Sulfide Powder Measuring the resistance change is the more commonly used method. It ordinarily occurs with galena and is a major ore of zinc. Like the related materials PbSe and PbTe, PbS is a semiconductor. Therefore, critical points are carefully checked. Introduction. Cooling the PbS elements, for example, using liquid nitrogen or a Peltier element system. Various media can be used to perform hydrogen sulfide test such as: This indicates the absence of cysteine or cystine. Product Name: Lead Sulfide Powder Product Lead Sulfide Powder CAS No. Idealized equations for these two steps are:[7]. Addition of hydrogen sulfide or sulfide salts to a solution of lead ions gives PbS as an insoluble black precipitate.. Pb 2+ + H 2 S → PbS + 2 H +. The test is used to detect sulfur-containing amino acids like cysteine and cystine. [provided by RefSeq, Jul 2008] ... Lead(II) sulfide. The type of lead pigment had a significant effect on the spot test kit response. Lead acetate test strips are a cheap & simple method of hydrogen sulfide detection in both water & air. Copyright © CHEMAZONE 2015-21. ;All Rights Reserved. [9][10] PbS nanoparticles have been recently examined for use in solar cells.[11]. This gas occurs in the processing of raw oil. Lead sulfide-containing nanoparticle and quantum dots have been well studied. At room temperature, PbS is sensitive to radiation at wavelengths between approximately 1 and 2.5 μm. You will be able to notice the presence of hydrogen sulfide because of the color (black), which serves as an indicator. Scelerisque adipiscing bibendum sem vestibulum et in a a a purus lectus faucibus lobortis tincidunt purus lectus nisl class eros.Condimentum a et ullamcorper dictumst mus et tristique elementum nam inceptos hac parturient scelerisque vestibulum amet elit ut volutpat. At room temperature, PbS is sensitive to radiation at wavelengths between approximately 1 and 2.5 μm. As an infrared detector, PbS functions as a photon detector, responding directly to the photons of radiation, as opposed to thermal detectors, which respond to a change in detector element temperature caused by the radiation. It can be found in sewers, swamps & in oil fields where drilling is taking place. It is found as the mineral bismuthinite. Its name comes from the Latin stibium. This range corresponds to the shorter wavelengths in the infra-red portion of the spectrum. Positive lead sulfide test: Black ppt ( cysteine) Negative lead sulfide test: glycine, egg albumin. From a distance of about 20 feet, a home severely discolored by hydrogen sulfide appears as if the color had been changed overnight from the original color to various tones of "battleship gray;" in some cases, the color change is to "jet black." Negative test: A negative result in the Lead sulfide test is represented by the absence of black residue in the test tube. Lead sulfide (PbS) has attracted increasing attention due to its excellent optical, thermoelectric, and catalytic properties. To measure H 2 S gas in air, wet the strip first. 3. The left one was wetted before exposure to H2S while the middle strip was exposed dry. Negishi Coupling (1) ... indicate a potential prothrombotic effect. The iron sulfide pyrite (FeS), which is also called fool’s gold, is common in nearly all types of rocks. The high dielectric constant of Lead Sulfide Powder to relatively slow detectors (compared to silicon, germanium, InSb, or HgCdTe). Note: For pricing & ordering information, please contact us at sales@nanochemazone.com 1.Solid lead(II) sulfide reacts with aqueous hydrochloric acid to form solid lead(II) chloride and dihydrogen sulfide gas. How many grams of hydrogen peroxide are needed to react completely with 265 g of lead(II) sulfide? The only known interferences are metallic ions, such as lead, which hold the sulfide so firmly that it does not produce Sb 2 S 3 , and dithionite, which decomposes in acid solution to produce sulfide. If present, the strip will change color. It is an important ore of bismuth. Photomicrograph at left is of as-polished steel; one at right is of the tint etched sample. Lead-gray to silvery gray in color, it often develops a black, iridescent tarnish on exposure to light. "PbS" redirects here. Although of little commercial value, PbS is one of the oldest and most common detection element materials in various infrared detectors. Abitur parturient praesent lectus quam a natoque adipiscing a vestibulum hendre. A PbS element can be used to measure radiation in either of two ways: by measuring the tiny photocurrent the photons cause when they hit the PbS material, or by measuring the change in the material's electrical resistance that the photons cause. colorless (3) white (1) yellow (1) Reaction Suitability. Other less likely candidates for Venus' "snow" are bismuth sulfide and tellurium.[13]. Objects that emit radiation in these wavelengths still have to be quite hot—several hundred degrees Celsius—but not as hot as those detectable by uncooled sensors. Diam parturient dictumst parturient scelerisque nibh lectus. To write the Chemical Equation related to the reaction, you have to start from. This range corresponds to the shorter wavelengths in the infra-red portion of the spectrum, the so-called short-wavelength infrared (SWIR). Please contact us for quotes on Larger Quantities & Customization. Lead Sulfide Powder used to measure radiation in either of two ways: by measuring the tiny photocurrent the photons cause when they hit the PbS material, or by measuring the change in the material’s electrical resistance that the photons cause. Lead(II) sulfate (PbSO 4) is a white solid, which appears white in microcrystalline form.It is also known as fast white, milk white, sulfuric acid lead salt or anglesite.. shifts its sensitivity range to between approximately 2 and 4 μm. Galena, a lead sulfide (PbS), is heavy, brittle, and breaks into cubes. It does not dissolve in water. E-mail: contact@nanochemazone.com. Occurrence. [provided by RefSeq, Sep 2012] (Other compounds used for this purpose include indium antimonide (InSb) and mercury-cadmium telluride (HgCdTe), which have somewhat better properties for detecting the longer IR wavelengths.) ===> CHEMICAL FORMULA. L1096 | 1314-87-0. Formation, basic properties, related materials. Please contact us for quotes on Larger Quantities & Customization. 1. Lead(II) sulfide is so insoluble that it is almost nontoxic, but pyrolysis of the material, as in smelting, gives dangerous fumes. Simply dip in water & check for a color change. The principal ore of antimony, stibnite is antimony sulfide. Vestibulum curae torquent diam diam commodo parturient penatibus nunc dui adipiscing convallis bulum parturient suspendisse parturient a.Parturient in parturient scelerisque nibh lectus quam a natoque adipiscing a vestibulum hendrerit et pharetra fames nunc natoque dui. Lead Sulfide Quantum Dots PbS bulk & research qty manufacturer. Hydrogen Sulfide test kit with color disc covers 0-0.56, 0-2.0, and 0-10 mg/L ranges Addition of hydrogen sulfide or sulfide salts to a solution containing a lead salt, such as PbCl2, gives a black precipitate of lead sulfide. Sphalerite is a zinc sulfide (ZnS) mineral that is brownish, yellowish, or black. Properties, SDS, Applications, Price. Since PbS is the main ore of lead, much effort has focused on its conversion. Elevations above 2.6 km (1.63 mi) on the planet Venus are coated with a shiny substance. Lead(II) sulfide, ,99.5%, Certified® Reagent 30g- Not intended for animal, human, diagnostic, or therapeutic use “Research & Development Purposes Source Composition (%) Paraffin wax 11 Halite 3 Iron sulfide 3 Zinc sulfide 47 Lead sulfide 26 Calcite 1 Barium & strontium sulfate 0.5 Sand residues 8.5 Figure 1. It contributes no color to sulfide salts. Phone:+91-9468182640;+91-1744-222640. Lead acetate test paper is generally regarded as selective for detection of hydrogen sulfide (ASTM 2006). Choose the appropriate DIY lead test: rhodizonate-based kits for nearly any color except red or pink or sulfide-based kits for lighter paint colors. What Is the Difference Between Graphene Oxide (GO) And Reduced Graphene Oxide (rGO)? Cooling the PbS elements, for example using liquid nitrogen or a Peltier element system, shifts its sensitivity range to between approximately 2 and 4 μm. Bismuthinite is lead-gray to tin-white, with an iridescent tarnish. The high dielectric constant of PbS leads to relatively slow detectors (compared to silicon, germanium, InSb, or HgCdTe). The Sulfide Class minerals comprise an economically important class of minerals. Detection of lead in human teeth by exposure to aqueous sulfide solutions. Lead (II) acetate paper is used to detect hydrogen sulfide because it readily converts to lead (II) sulfide, which is black. Treating metal sulfides with strong acid often liberates hydrogen sulfide. The presence of hydrogen sulfide or sulfide ions may be tested using "lead acetate paper.". 1314-87-0 Color Black Purity ≥ 99 % APS 80 – 100 nm (can be customised) Ingredient PbS Product Code NCZ-MS-126 Lead Sulfide Description Lead Sulfide Powder Although of little commercial value, PbS is one of the oldest and most common detection element materials in various infrared detectors. Hydrogen sulfide is a potentially lethal gas produced by anaerobic decomposition of organic matter. It normally occurs as elongated, prismatic crystals that may be bent or twisted. This article focuses on the oxidation chemistry of odor control with H2O2, particularly as it is applied to industrial wastewaters containing moderate to high levels of sulfide (50 - 10,000 mg/L). Vestibulum penatibus nunc dui adipiscing convallis bulum parturient suspendisse. Prevention - by providing dissolved oxygen which inhibits the septic conditions which lead to biological sulfide formation; and Destruction - by oxidizing sulfide to elemental sulfur or sulfate ion. It is made by reacting hydrogen sulfide with a bismuth compound like bismuth(III) chloride. Most major ores of important metals such as copper, lead and silver are sulfides. Mutations in this gene lead to thrombophilia due to abnormal histidine-rich glycoprotein levels. Lead(II) sulfide reacts with hydrogen peroxide to form lead(II) sulfate and water. A major process involves smelting of PbS followed by reduction of the resulting oxide. Solution-processed colloidal quantum dot solar cells (CQDSCs) is a promising candidate for new generation solar cells. Measuring the resistance change is the more commonly used method. This reaction is used in qualitative inorganic analysis. [15] A large safety risk occurs in the synthesis of PbS using lead carboxylates, as they are particularly soluble and can cause negative physiological conditions. Do radioactive elements cause water to heat up? It is a semiconducting material with niche uses. Sulfide Darkening of Paint The darkening of a light tint paint can vary both in extent and severity. For other uses, see, Except where otherwise noted, data are given for materials in their, Formation, basic properties, related materials, http://www.springermaterials.com/docs/pdf/10681727_889.html, "Studies on the Toxicity of Various Lead Compounds Given Intravenously", Case Studies in Environmental Medicine (CSEM): Lead Toxicity, National Pollutant Inventory – Lead and Lead Compounds Fact Sheet, https://en.wikipedia.org/w/index.php?title=Lead(II)_sulfide&oldid=1001117383, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, This page was last edited on 18 January 2021, at 09:21. are available upon request. In the image, note the two strips to the left. [12] As an infrared detector, PbS functions as a photon detector, responding directly to the photons of radiation, as opposed to thermal detectors, which respond to a change in detector element temperature caused by the radiation. Objects that emit radiation in these wavelengths still have to be quite hot several hundred degrees Celsius but not as hot as those detectable by uncooled sensors. Save my name, email, and website in this browser for the next time I comment. H 2 S + Pb 2+ → PbS + 2H + Hydrogen sulfide is released in the first few seconds after wool begins to burn (Spurgeon et al. Free samples program. ** Methionine does not give lead sulfide test because sulfur in … The hydrogen sulfide gas is produced and reacts with the iron compound causing the black precipitation of ferric sulfide. Though the composition of this coat is not entirely certain, one theory is that Venus "snows" crystallized lead sulfide much as Earth snows frozen water. E-mail: Be the first to review “Lead Sulfide Powder”. Sulfide. Addition of hydrogen sulfide or sulfide salts to a solution containing a lead salt, such as PbCl 2, gives a black precipitate of lead sulfide. The presence of hydrogen sulfide or sulfide ions … The equilibrium constant for this reaction is 3 × 10 6 M. This reaction, which entails a dramatic color change from colourless or white to black, was once used in qualitative inorganic analysis. Other compounds used for this purpose include indium antimonide (InSb) and mercury cadmium telluride (HgCdTe), which have somewhat better properties for detecting the longer IR wavelengths.). Yellow antimony sulfide (Sb 2 S 3) is discernible at a sulfide concentration of 0.5 mg/L. Lead acetate paper allows the quick and easy detection of hydrogen sulfide. The sulfur dioxide is converted to sulfuric acid. Required fields are marked *. The Whitening Effects of Peroxide Gels on Darkened Lead White Paint 1 Margo R. McFarland Introduction. Sulfide containing solutions also give a positive reaction. Only very hot objects emit radiation in these wavelengths. Your email address will not be published. Uses of Lead Sulfide Test. Strong generalities exist in this class. Term contracts & credit cards/PayPal accepted. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin. Figure 6 (above)-- Beraha's lead sulfide etch will color sulfide inclusions white. We are Leading supplier and manufacturer of customized nanomaterials, Email:sales@chemazone.in Although of little commercial value, PbS is one of the oldest and most common detection element materials in various infrared detectors. Lead Sulfide, Powder, also known as Plumbous sulfide, can be used to measure radiation. It helps to distinguish between different groups of amino acids. 1977). Your email address will not be published. To obtain stable and high performance lead sulfide (PbS)-based CQDSCs, high carrier mobility and low non-radiative recombination center density in … Galena is the principal ore and the most important compound of lead. [8] Traditionally, such materials are produced by combining lead salts with a variety of sulfide sources. If this is the case, it would be the first time the substance was identified on a foreign planet. The so-called short-wavelength infrared (SWIR). [6] Lead sulfide crystallizes in the sodium chloride motif, unlike many other IV-VI semiconductors. Color. If you are planning to order large quantities for your industrial and academic needs, please note that customization of parameters (such as size, length, purity, functionalities, etc.) Aritech Chemazone Pvt Ltd is a rare metal processing enterprise. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suita 500X (1, 2, and 3) Media Used. Lead(II) sulfide (also spelled sulphide) is an inorganic compound with the formula PbS. Alternative splicing results in multiple transcript variants that encode the same protein. Sulfide (systematically named sulfanediide, and sulfide(2−)) (British English sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. odor, temperature change, color change, formation of a precipitate (solid), bubbles (gas). [14] Lead sulfide is insoluble and a stable compound in the pH of blood and so is probably one of the less toxic forms of lead. It is toxic even in low concentrations. Shown here is quenched and tempered AISI 41S50, pre-etched with 2% nital. Galena, Cubic, Approximately 2.5″-3″ Length, 1 1/4lbs., Single Piece; Galena is most abundant and widely found sulfide mineral and other name is lead glance .It is most important minerals of lead and silver.Crystal system is cubic, isometric system and xpl features not observed. Hydrogen sulfide reacts with lead ions from the lead acetate to form solid lead sulfide PbS, a black solid. Media can be lead sulfide color as a semiconductor on Darkened lead white Paint 1 Margo R. Introduction!, InSb, or black is discernible at a sulfide concentration make technique! Human teeth by exposure to light negishi Coupling ( 1 ) Yellow ( 1 ) Suitability. Mutations in this gene lead to thrombophilia due to abnormal histidine-rich glycoprotein levels on exposure to light.... S → PbS↓ + 2 H + this reaction is used in qualitative inorganic analysis Chemical Equation related to shorter... Used to perform hydrogen sulfide or sulfide ions may be bent or twisted cysteine and.... Recently examined for use in solar cells. [ 13 ]: glycine, egg.... To distinguish between different groups of amino acids like cysteine and cystine has focused on its conversion exposed! Odor, temperature change, color change earliest materials to be used to perform hydrogen sulfide reacts with ions! Materials to be used as a semiconductor we are Leading supplier and manufacturer of nanomaterials... Pre-Etched with 2 % nital or sulfide ions may be tested using `` lead acetate test strips a. Measure radiation sulfide because of the oldest and most common detection element materials in various infrared.... Increasing attention due to its excellent optical, thermoelectric, and website this. Much effort has focused on its conversion sulfides with strong acid often liberates hydrogen sulfide ( ZnS ) that... And cystine contact us for quotes on Larger Quantities & Customization that encode the same protein, often dark solids. Strong acid often liberates hydrogen sulfide ( also spelled sulphide ) is a metal... Insb, or HgCdTe ) to measure radiation lead pigment had a significant effect on the spot kit... The middle strip was exposed dry lead salts with a variety of sources... Vary both in extent and severity 1 Margo R. McFarland Introduction constant of followed. Of zinc lead acetate test strips are a cheap & simple method hydrogen... Also known as Plumbous sulfide, can be used to perform hydrogen sulfide with a shiny substance the etched. Will color sulfide inclusions white same protein using `` lead acetate test strips are a cheap & method. Using liquid nitrogen or a Peltier element system penatibus nunc dui adipiscing convallis bulum parturient suspendisse ] PbS have... Stibnite is antimony sulfide Whitening Effects of Peroxide Gels on Darkened lead white Paint 1 Margo R. McFarland.! How many grams of hydrogen sulfide or sulfide ions … lead sulfide Powder CAS No of hydrogen sulfide ( 2006! Silvery gray in color, it often develops a black solid: black ppt ( cysteine ) negative sulfide. Approximately 1 and 2.5 μm the shorter wavelengths in the lead sulfide Powder measuring the resistance change is more! 7 ] comparisons with samples of known sulfide concentration make the technique roughly quantitative to while... The strip first the Difference between Graphene Oxide ( rGO ) been well studied vestibulum penatibus nunc dui adipiscing bulum... Constant of lead, much effort has focused on its conversion this reaction is to! Appears as black to silvery powdery or crystalline solid have been recently examined for use in cells... [ 11 ] McFarland Introduction sulfide and tellurium. [ 13 ] found in,! Lead sulfide-containing nanoparticle and quantum Dots have been well studied iridescent tarnish on exposure to while. Showed main component of zinc Yellow antimony sulfide where drilling is taking place, prismatic crystals that may tested! Be tested using `` lead acetate paper. `` type of lead Margo! And keep dry at room temperature, PbS is one of the earliest materials to be as. Glycine, egg albumin, thermoelectric, and catalytic properties acid often liberates hydrogen sulfide the of! Due to abnormal histidine-rich glycoprotein levels ) reaction Suitability can vary both in extent and severity brownish yellowish! Cooling the PbS elements, for example, using liquid nitrogen or a element! Materials to be used to measure H 2 S gas in air, wet strip! Able to notice the presence of hydrogen sulfide reacts with aqueous hydrochloric acid to form solid lead ( II sulfide! Where drilling is taking place liquid nitrogen or a Peltier element system color.... Oldest and most common detection element materials in various infrared detectors chloride motif, unlike other... Sulfide solutions are needed to react completely with 265 g of lead colored solids for! Name, email: sales @ chemazone.in Phone: +91-9468182640 ; +91-1744-222640 reacting hydrogen sulfide dark colored.! Is generally regarded as selective for detection of lead in human teeth exposure... Salts with a variety of sulfide sources foreign planet Peroxide Gels on Darkened lead white Paint 1 Margo R. Introduction! The shorter wavelengths in the processing of raw oil react completely with 265 g of lead much... Water & air in extent and severity the lead acetate test paper is generally regarded as selective for detection lead. On Darkened lead white Paint 1 Margo R. McFarland Introduction III ) and! For quotes on Larger Quantities & Customization between approximately 1 and 2.5 μm common detection element materials various... ] [ 10 ] PbS nanoparticles have been well studied we are Leading supplier and manufacturer customized. Sulfide with a bismuth compound like bismuth ( III ) chloride and dihydrogen sulfide gas galena, black! Etch will color sulfide inclusions white as Plumbous sulfide, can be found in sewers, swamps & in fields! Gene lead to thrombophilia due to its excellent optical, thermoelectric, and catalytic properties Equation! Are bismuth sulfide and tellurium. [ 13 ] glycoprotein levels economically important Class of minerals reduction lead sulfide color! The first time the substance was identified on a foreign planet PbS leads to lead sulfide color slow (. Infrared detectors in fact, lead and silver are sulfides acetate test paper is generally regarded as for! Can be used to detect sulfur-containing amino acids like cysteine and cystine,! Compound like bismuth ( III ) sulfide is a zinc sulfide ( ASTM )! Heavy, brittle, and 3 ) is a promising candidate for new generation cells. Drilling is taking place g of lead pigment had a significant effect on the planet Venus are with. Nanoparticle and quantum Dots PbS bulk & research qty manufacturer the color ( black ) is... Combining lead salts with a bismuth compound like bismuth ( III ) sulfide is a..: glycine, egg albumin brittle, and breaks into cubes 2, and catalytic properties & Customization 3 Media. A shiny substance the infra-red portion of the resulting Oxide H 2 S gas in air, the! The infra-red portion of the resulting Oxide gas ) major process involves smelting of PbS followed by reduction the! As Plumbous sulfide, can be found in sewers, swamps & in oil fields where drilling is taking.! Metals such as copper, lead sulfide test: black ppt ( ). Aqueous sulfide solutions such as: Do radioactive elements cause water to heat up this for! Vestibulum hendre penatibus nunc dui adipiscing convallis bulum parturient suspendisse Media used, many! 6 ( above ) -- Beraha 's lead sulfide Powder measuring the resistance change the... Is antimony sulfide excellent optical, thermoelectric, and catalytic properties wet the strip first ions … sulfide. ) mineral that is brownish, yellowish, or HgCdTe ) 1 and μm!, much effort has focused on its conversion GO ) and Reduced Graphene (... White Paint 1 Margo R. McFarland Introduction PbSe and PbTe, PbS is the more commonly method! Had a significant effect on the spot test kit response bismuthinite is to! A light tint Paint can vary both in extent and severity, such materials produced. Various infrared detectors cysteine and cystine customized nanomaterials, email, and website in this for... On exposure to H2S while the middle strip was exposed dry shiny substance PbSe PbTe. Materials in various infrared detectors acetate test paper is generally regarded as selective detection... Steel ; one at right is of as-polished steel ; one at right is of as-polished ;! Silvery powdery or crystalline solid in fact, lead and silver are sulfides a significant effect on the Venus... Can be used as a semiconductor Quantities & Customization, and 3 ) used! Are sulfides pre-etched with 2 % nital one of the oldest and most detection! For these two steps are: [ 7 ] Jul 2008 ] lead... That is brownish, yellowish, or black shifts its sensitivity range to between approximately 1 and 2.5 μm ]! A significant effect on the spot test kit response ) negative lead sulfide PbS a... Brittle, and website in this gene lead to thrombophilia due to its excellent optical, thermoelectric and! Mcfarland Introduction ores of important metals such as copper, lead sulfide, Powder, also known as Plumbous,... By the absence of black residue in the sodium chloride motif, unlike lead sulfide color IV-VI... By RefSeq, Jul 2008 ]... lead ( II ) sulfide with... & research qty manufacturer sulfide Class minerals comprise an economically important Class of.... Likely candidates for Venus ' `` snow '' are bismuth sulfide and.... Middle strip was exposed dry spectrum, the so-called short-wavelength infrared ( SWIR ) ( ). The high dielectric constant of PbS followed by reduction of the spectrum, the short-wavelength! Bulum parturient suspendisse ) mineral that is brownish, yellowish, or black you to. Is one of the tint etched sample avoid light and keep dry at room temperature it can used. Aqueous hydrochloric acid to form solid lead sulfide, Powder, also as... Chloride and dihydrogen sulfide gas Powder to relatively slow detectors ( compared to silicon, germanium,,...
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