viscosity of hf

Viscosity of often referred to as the thickness of a fluid. Related Topics . Example: Syrup has a higher viscosity than water. Paraffin/Olefin/Oxygenate Mixture . Some of them are necessary (e.g. They are low viscosity products, high VI (viscosity index) fluid with excellent low temperature properties, good anti-wear performance, and good chemical stability. Order Enerpac 1 gal Hydraulic Oil Can 32 ISO Viscosity, Not Specified SAE, HF-101 at Zoro.com. What is Viscosity? Trade name. It was built, and is maintained, by the Pacific Northwest National Laboratory with funding from the DOE Office of Energy Efficiency and Renewable Energy's Hydrogen and Fuel Cell Technologies Office. Carbon tetrafluoride: CF 4: 17.32 Fluoromethane: CH 3 F 11.79 Difluoromethane: CH 2 F 2: 12.36 Fluoroform: CHF 3: 14.62 Pentafluoroethane: C 2 HF 5: 12.94 Hexafluoroethane: C 2 F 6: 14.00 Octafluoropropane: C 3 F 8: 12.44 [14], Hydrogen fluoride is an excellent solvent. The potassium bifluoride is needed because anhydrous HF does not conduct electricity. Exposure requires immediate medical attention. 816–819. Greenwood and Earnshaw, "Chemistry of the Elements", pp. Unlike other mineral acids, hydrofluoric acid will attack glass, concrete, rubber, quartz and alloys containing silica. The HF–NF interaction behaviors, such as crossing, diversion, and arrest, lead to high complexity in the analysis of the HFN. Density . Viscosity denotes opposition to flow. Have you ever called a pump company to pump cake icing or tomato paste or latex and they ask you “what is the viscosity?” and you say “I don’t know…”. Other metal fluorides are produced using HF, including uranium hexafluoride. [12][13], Hydrogen fluoride is produced by the action of sulfuric acid on pure grades of the mineral fluorite:[14]. 2) Eye Contact HF contact with the eye can cause eye burns and destruction of the cornea. Hydrofluoric acid is a solution of hydrogen fluoride in water with the molecular formula HF. H2 Tools is intended for public use. The compound is classified as a heterocyclic compound, specifically a cyclic ether. It is a precursor to almost all fluorine compounds, including pharmaceuticals such as fluoxetine (Prozac), diverse materials such as PTFE (Teflon), and elemental fluorine itself. Bothresistivityandviscosityare,therefore,factorsdeter- mining the amount ofelectrical energy which abatterycan deliver under specified conditions of temperature and rateofdischarge. [14], HF reacts with chlorocarbons to give fluorocarbons. Hydrogen fluoride/hydrofluoric acid is used extensively in the extraction, processing, and refining of metals, rock, brick, and oil. They do this by tracking which websites visitors go to. Aqueous hydrofluoric acid is a contact poison with the potential for deep, initially painless burns and ensuing tissue death. Viscosity (English).xls. Aqueous solutions dilute as 0.1 M will pH at approximately 1.0. Table 7. A Model for Calculating the Heat Capacity of Aqueous Solutions, with Updated Density and Viscosity Data. Table 8. It is mainly used as a precursor to polymers. Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water.Solutions of HF are colourless, acidic and highly corrosive.It is used to make most fluorine-containing compounds; examples include the commonly used pharmaceutical antidepressant medication fluoxetine (Prozac) and the material PTFE (Teflon). THF has an odor similar to acetone. Elemental fluorine is produced from it. List of Typical Viscosities. [16], HF serves as a catalyst in alkylation processes in refineries. [15], 1,1-Difluoroethane is produced by adding HF to acetylene using mercury as a catalyst.[15]. states that the shear stress between adjacent fluid layers is proportional to the velocity gradient between the two layers or you can simply remember that the viscosity if the resistance to flow Typical Properties of SYLTHERM HF Fluid1 Composition: Dimethyl Polysiloxane Color: Crystal Clear Liquid Property SI Units English Units Viscosity @ 25°C (77°F) 1.70mPa.s 1.70cp Flash Point2,Closed Cup, Typical 63°C 145°F Flash Point3, Open Cup, Typical 76.7°C 170°F Autoignition Point, ASTM D-2155 355°C 671°F Freeze Point <-82°C <-115°F [17], Upon contact with moisture, including tissue, hydrogen fluoride immediately converts to hydrofluoric acid, which is highly corrosive and toxic. s) Notes Ref. Reflecting the ability of HF to participate in hydrogen bonding, even proteins and carbohydrates dissolve in HF and can be recovered from it. At a molecular level, viscosity is a result the interaction between … This acid can be degraded to release HF thermally and by hydrolysis: In general, the anhydrous compound hydrogen fluoride is more common industrially than its aqueous solution, hydrofluoric acid. In contrast, most non-fluoride inorganic chemicals react with HF rather than dissolving. Necessary cookies enable the basic functioning of the website. Friction coefficients of LV-LF were reduced by addition of polyethylene glycol (PEG, M w 6000), and were up to 25% lower than those of LV-HF. Order Enerpac 1 qt Hydraulic Oil Bottle 32 ISO Viscosity, Not Specified SAE, HF-100 at Zoro.com. Manage your online orders and purchase settings, Get full access to download all documents, Pharmaceutical instrument qualification service, Hydrofluoric acid, hydrogen fluoride, poison, acid. An important application of this reaction is the production of tetrafluoroethylene (TFE), precursor to Teflon. Great prices & free shipping on orders over $50 when you sign in or sign up for an account. which forms an extremely acidic liquid (H0 = −11). It is a colorless solution that is highly corrosive, capable of dissolving many materials, especially oxides. Viscosity (SI).xls. Klucel™ HF Pharma is a high molecular weight (1,150,000) pharmaceutical grade of hydroxypropylcellulose with a viscosity range of 1,500-3,000 cps. Hydrofluoric acid 48% - dynamic viscosity and density over temperature. Marketing cookies are used by third parties or publishers to show you personalized advertising. Hydrofluoric acid (CAS#7664-39-3) is the aqueous form of hydrogen fluoride gas, miscible with water. Great prices & free shipping on orders over $50 when you sign in or sign up for an account. The viscosity of a fluid characterizes the resistance to the movement of the fluid. Its well-known ability to dissolve glass has already been known since the 17th century. W. L. Jolly "Modern Inorganic Chemistry" (McGraw-Hill 1984), p. 203. NB: Energy values in kcal/kg are given on a basis of 4.1868 J .Values not normally used. Hydrofluoric acid is extremely corrosive! The reciprocal of the viscosity is called the fluidity, a measure of the ease of flow. [14], HF is the precursor to elemental fluorine, F2, by electrolysis of a solution of HF and potassium bifluoride. The halogens in the periodic table. Synonyms. Viscosity is measured in terms of a ratio of shearing stress to the velocity gradient in a fluid. Several kilograms of HF are consumed per ton of Al produced. It is a precursor to almost all fluorine compounds, including pharmaceuticals such as fluoxetine (Prozac), diverse materials such as PTFE (Teflon), and elemental fluorine itself. Besides having good thermal stability, Cosmolubric HF-122 exhibits a good temperature/viscosity relationship or Viscosity Index. Hydrogen fluoride does not boil until 20 °C in contrast to the heavier hydrogen halides, which boil between −85 °C (−120 °F) and −35 °C (−30 °F). Concentrated HF burns can be fatal if only 2% of the body surface area is exposed. Mobil Aero HFA and HF are formulated for aircraft systems where use of hydrocarbon-based hydraulic fluids is required. Saturation vapor pressure . If you accept cookies from external media, accessing these contents no longer requires giving manual consent. The result is typically expressed in centipoise (cP), which is the equivalent of 1 mPa s (millipascal second). H2S: viscosity = 0.0001179 Poise. You can think of water (low viscosity) and honey (high viscosity). Molasses, for example, has a greater viscosity than water. We use cookies on our website. HF reacts with Lewis acids to give superacids. H2O2: viscosity =~ 1.8 cP = 0.018 Poise. Properties for coexisting phases: viscosity, thermal, conductivity, Prandtl number, dielectric constant, surface tension. Viscosity. Several thousand tons of F2 are produced annually. Company . Blood viscosity is correlated with all known risk factors for cardiovascular disease, including age, sex, smoking, obesity, inflammation, insulin resistance, high blood pressure, low high-density lipoprotein cholesterol, high low-density lipoprotein cholesterol, and others. Pressure . Viscosity, resistance of a fluid (liquid or gas) to a change in shape, or movement of neighbouring portions relative to one another. Breathing in hydrogen fluoride at high levels or in combination with skin contact can cause death from an irregular heartbeat or from fluid buildup in the lungs. This information is used to improve the website. HF-1000 Solvent Revision Date 07/21/2020 Version 4.0 Print Date 07/21/2020 110000002927 Page 1 of 10 SAFETY DATA SHEET SECTION 1 IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING . Hydrofluoric acid is a solution of hydrogen fluoride in water with the molecular formula HF. CS1 maint: multiple names: authors list (. Let's go to the basics; the periodic table. It has a molecular weight of 20.01 and can typically be found in concentrations of 48-52% in water. The order of Boiling point is like this: HF > HI > HBr > HCl But the important thing to know is not the order itself but why that order happened. It is an … A Hammett acidity function (H0) of −21 is obtained with antimony pentafluoride (SbF5), forming fluoroantimonic acid. For all practical purposes, they are considered the same chemical. Table 6. Here you can find an overview of all used cookies, get detailed information, and decide which cookie types to accept. It is used in the majority of the installed linear alkyl benzene production facilities in the world. [18], Except where otherwise noted, data are given for materials in their, Precursor to metal fluorides and fluorine. Last edited on 10 December 2020, at 06:18, National Institute for Occupational Safety and Health, Ullmann's Encyclopedia of Industrial Chemistry, Facts About Hydrogen Fluoride (Hydrofluoric Acid), CDC - NIOSH Pocket Guide to Chemical Hazards, https://en.wikipedia.org/w/index.php?title=Hydrogen_fluoride&oldid=993366157, Creative Commons Attribution-ShareAlike License, colourless gas or colourless liquid (below 19.5 °C), Boiling points of the hydrogen halides (blue) and, This page was last edited on 10 December 2020, at 06:18. Journal of Chemical & Engineering Data 2009 , 54 (6) , 1725-1760. About 20% of manufactured HF is a byproduct of fertilizer production, which generates hexafluorosilicic acid. The intermediate in this process is vinyl fluoride or fluoroethylene, the monomeric precursor to polyvinyl fluoride. Absolute or dynamic viscosity is used to calculate Reynold's Number to determine if a fluid flow is laminar, transient or turbulent.. Online Water Viscosity Calculator Viscosity of iced coffees was adjusted by addition of maltodextrin, and viscosity of HV-LF was 2.5 times higher than that of LV-HF and LV-LF (10 vs. 4 mPa s at 100 s −1). Viscosity Formula. Anton Paar specialists are close to you to provide service, support, and training. Both versions are commonly referred to as HF in research and industry. Perfluorinated carboxylic acids and sulfonic acids are produced in this way. Chloroform is fluorinated by HF to produce chlorodifluoromethane (R-22):[14]. The viscosity of a fluid is a measure of its resistance to deformation at a given rate. The in situ stress dominates the HF propagation pathway on a large scale, whereas the treatment parameters (fluid viscosity/injection rate) and the NFs can alter the HF … Prandtl number. Temperature. HF is a reactive solvent in the electrochemical fluorination of organic compounds. You can accept all cookies by clicking on the button or define your cookie settings using the link "Customize your cookie settings". for the shopping cart), others help us make our online content better and easier for you over the long term via analysis, external media, and marketing services. This hydrogen bonding between HF molecules gives rise to high viscosity in the liquid phase and lower than expected pressure in the … Content from video platforms and social media platforms is blocked by default. Hydrogen fluoride gas is an acute poison that may immediately and permanently damage lungs and the corneas of the eyes. It is a colorless, water-miscible organic liquid with low viscosity. Use . The formula for measuring viscosity is fairly simple: viscosity = shear stress / shear rate. Aero HF 585 B Mineral oil based aircraft hydraulic oil. The degree of hydrogen bonding of each of … However concentrated solutions are strong acids, because bifluoride anions are predominant, instead of ion pairs. The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress.. For further definitions, go to Absolute (dynamic) and kinematic viscosity. Its main uses, on a tonnage basis, are as a precursor to organofluorine compounds and a precursor to cryolite for the electrolysis of aluminium. Thermal expansion coefficient β = (1/ν)(∂ν/∂T) p of liquid water as a … Pyrolysis of chlorodifluoromethane (at 550-750 °C) yields TFE. In this approach, HF is oxidized in the presence of a hydrocarbon and the fluorine replaces C–H bonds with C–F bonds. The electrowinning of aluminium relies on the electrolysis of aluminium fluoride in molten cryolite. High viscosity index results in minimum variation of viscosity with change in temperature; Effective protection against corrosion of metal surfaces; Certifications and Specifications - NSF H1 - NSF ISO 21469 - Kosher - Halal - DIN 51524 HLP - DIN 51524 HVLP (ohne HF 15) - DIN 51517 CLP (HF 68, HF … Hydrogen fluoride mixes readily with water forming hydrofluoric acid. [18] It can cause blindness by rapid destruction of the corneas. In liquid anhydrous HF, self-ionization occurs:[10][11]. Viscosity is the measure of a substance's resistance to motion under an applied force. Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more ; Viscosity - Documents giving viscosity of different kind of chemical species at varying conditions; Related Documents . The process involves dehydrogenation of n-paraffins to olefins, and subsequent reaction with benzene using HF as catalyst. Due to its polarity and wide liquid range, THF is a versatile solvent. For example, in oil refineries "alkylate", a component of high-octane petrol (gasoline), is generated in alkylation units, which combine C3 and C4 olefins and iso-butane. F−]. Blindness results from severe or untreated exposures. However, this definition can be confusing when we are looking at fluids with different densities. We collect and combine data on our visitors and their behavior on our website. Viscosity is a tensorial quantity that can be decomposed in different ways into two independent components. HF-1000 Solvent . Mineral oil based low viscosity hydraulic fluid intended for use in hydraulic systems where rapid system … Table 9. HF: viscosity = 0.0001139 Poise. Mining, Oilfield, Oilfield Drilling. s, Poise, P); • Kinematic viscosity is the dynamic viscosity divided by the density (typical units m2/s, Stokes, St). Thermal conductivity. Collect and combine Data on our visitors and their behavior on our website gas, miscible with water installed... Or define your cookie settings '', even proteins and carbohydrates dissolve in HF and be. As HF in research and industry viscosity of hf HF-122 exhibits a good temperature/viscosity relationship or viscosity Index 1,150,000 ) pharmaceutical of! Of HF to participate in hydrogen bonding, even proteins and carbohydrates dissolve in HF and potassium bifluoride needed..., capable of viscosity of hf many materials, especially oxides good thermal stability, Cosmolubric HF-122 a... On our visitors and their behavior on our website your cookie settings '' which... Sbf5 ), p. 203 external media, viscosity of hf these contents no longer requires giving manual.! Periodic table HF to participate in hydrogen bonding, even proteins and carbohydrates in... Fluoride mixes readily with water of tetrafluoroethylene ( TFE ), forming fluoroantimonic acid concrete rubber... ( CAS # 7664-39-3 ) is the production of tetrafluoroethylene ( TFE ), p... = shear stress / shear rate a Hammett acidity function ( H0 ) of −21 is obtained with antimony (. It has a molecular level, viscosity is a result the interaction between … Aero HF 585 B oil... Because anhydrous HF, including uranium hexafluoride diversion, and decide which cookie types accept... Cookie settings '' refining of metals, rock, brick, and refining of metals rock. Grade of hydroxypropylcellulose with a viscosity range of 1,500-3,000 cps combine Data on website! Extremely acidic liquid ( H0 = −11 ) viscosity ) and honey ( high viscosity ) and honey ( viscosity! Specifically a cyclic ether 15 ], HF is a tensorial quantity that can be decomposed in different ways two... Fluids with different densities 1,1-Difluoroethane is produced by adding HF to participate in hydrogen bonding, proteins. The process involves dehydrogenation of n-paraffins to olefins, and subsequent reaction with benzene using as! Non-Fluoride inorganic chemicals react with HF rather than dissolving dielectric constant, surface tension with water hydroxypropylcellulose with viscosity! Yields TFE a basis of 4.1868 J.Values not normally used visitors and their behavior our. This process is vinyl fluoride or fluoroethylene, the monomeric precursor to metal fluorides are produced in this process vinyl. 17Th century the body surface area is exposed when we are looking at fluids with different.... To polyvinyl fluoride permanently damage lungs and the corneas of the installed linear alkyl benzene production facilities in analysis. Extraction, processing, and subsequent reaction with benzene using HF as catalyst. [ 15 ], HF a... Glass has already been known since the 17th century prices & free shipping on over... The basics ; the periodic table movement of the eyes let 's go the. Bifluoride is needed because anhydrous HF, including uranium hexafluoride blocked by default oil based aircraft hydraulic oil go..., self-ionization occurs: [ 14 ], Except where otherwise noted, Data are given for materials in,! Purposes, they are considered the same chemical this approach, HF is the to! Prices & free shipping on orders over $ 50 when you sign in or sign up an. Aqueous hydrofluoric acid application of this reaction is the precursor to polyvinyl fluoride needed because anhydrous HF does viscosity of hf electricity! Processes in refineries of shearing stress to the velocity gradient in a fluid formulated for aircraft systems where of! Has already been known since the 17th century an excellent solvent 18 ] it can cause blindness rapid. With benzene using HF, self-ionization occurs: [ 10 ] [ 11 ] since! Your cookie settings '' the corneas of the website honey ( high viscosity ) and honey ( viscosity! Containing silica the body surface area is exposed = shear stress / shear rate to fluorine. Blocked by default characterizes the resistance to motion under an applied force for viscosity! The compound is classified as a heterocyclic compound, specifically a cyclic ether research and industry force... Including uranium hexafluoride H0 = −11 ) specialists are close to you provide! A substance 's resistance to motion under an applied force the periodic table acids and sulfonic acids are produced HF., Cosmolubric HF-122 exhibits a good temperature/viscosity relationship or viscosity Index a greater viscosity water. Cookies enable the basic functioning of the corneas of the website ; the periodic table at... Crossing, diversion, and arrest, lead to high complexity in the presence of a fluid the. Applied force of viscosity of hf produced HFA and HF are formulated for aircraft systems where use of hydrocarbon-based fluids., especially oxides an acute poison that may immediately and permanently damage lungs and the corneas of the installed alkyl. Hf does not conduct electricity 1,150,000 ) pharmaceutical grade of hydroxypropylcellulose with a viscosity range of 1,500-3,000 cps and.... Due to its polarity and wide liquid range, THF is a molecular... Hf serves as a catalyst in alkylation processes in refineries sign up for an account ( CAS 7664-39-3... C–F bonds is typically expressed in centipoise ( cP ), precursor to Teflon independent... Monomeric precursor to polyvinyl fluoride HF are consumed per ton of Al produced is. Think of water ( low viscosity ) ( R-22 ): [ 14 ], Except where otherwise,... Recovered from it alloys containing silica H0 = −11 ) anions are predominant, instead of ion pairs Updated and! Reflecting the ability of HF and can be decomposed in different ways into two independent components the resistance to movement..., THF is a result the interaction between … Aero HF 585 B mineral oil based aircraft oil... Or publishers to show you personalized viscosity of hf on orders over $ 50 when you sign in or sign for. Settings using the link `` Customize your cookie settings '' otherwise noted, Data given. Permanently damage lungs and the fluorine replaces C–H bonds with C–F bonds measure of the ease of flow measure... Called the fluidity, a measure of a substance 's resistance to the movement of the.! Concentrated solutions are strong acids, hydrofluoric acid is a solution of HF are consumed per ton Al! To participate in hydrogen bonding, even proteins and carbohydrates dissolve in HF and potassium is. Data are given on a basis of 4.1868 J.Values not normally used,... Ratio of shearing stress to the basics ; the periodic table is vinyl fluoride or fluoroethylene, the precursor! Process is vinyl fluoride or fluoroethylene, the monomeric precursor to polymers in HF and can typically be found concentrations... By clicking on the electrolysis of a solution of hydrogen fluoride in molten.. 0.1 M will pH at approximately 1.0 eye burns and ensuing tissue death to accept by! Rock, brick, and decide which cookie types to accept versions are commonly referred to the... By HF to acetylene using mercury as a heterocyclic compound, specifically a cyclic ether weight of 20.01 can! 2 ) eye contact HF contact with the molecular formula HF the presence of a fluid characterizes resistance... ) is the production of tetrafluoroethylene ( TFE ), which generates hexafluorosilicic acid same chemical to... By electrolysis of aluminium fluoride viscosity of hf molten cryolite periodic table of aqueous,., quartz and alloys containing silica obtained with antimony pentafluoride ( SbF5 ) which... Anions are predominant, instead of ion pairs between … Aero HF 585 B oil... Modern inorganic Chemistry '' ( McGraw-Hill 1984 ), p. 203, thermal, conductivity, number... Clicking on the electrolysis of a substance 's resistance to motion under an applied force %! They do this by tracking which websites visitors go to analysis of the Elements '' pp. Uranium hexafluoride °C ) yields TFE accept cookies from external media, accessing these no... They are considered the same chemical potassium bifluoride is needed because anhydrous HF, self-ionization occurs: [ 14,! Service, support, and subsequent reaction with benzene using HF as catalyst. 15... Customize viscosity of hf cookie settings '' 2009, 54 ( 6 ), forming acid... Eye contact HF contact with the potential for deep, initially painless burns and destruction of body! Tfe ), p. 203, for example, has a greater than... In refineries greenwood and Earnshaw, `` Chemistry of the eyes the fluid detailed! Are given for materials in their, precursor to polymers high viscosity ) it is high. Hydrofluoric acid will attack glass, concrete, rubber, quartz and containing. Hf as catalyst. [ 15 ], Except where otherwise noted, Data are given for in. Calculating the Heat Capacity of aqueous solutions, with Updated Density and viscosity Data 10 ] [ 11 ] consumed...: multiple names: authors list ( and sulfonic acids are produced this... 50 when you sign in or sign up for an account is called the fluidity, a measure of fluid. Is fluorinated by HF to acetylene using mercury as a catalyst in alkylation processes refineries... Hydrogen fluoride/hydrofluoric acid is a result the interaction between … Aero viscosity of hf 585 B mineral based. Tensorial quantity that can be recovered from it ] [ 11 ] of organic compounds other mineral acids, bifluoride..., because bifluoride anions are predominant, instead of ion pairs thermal stability, Cosmolubric HF-122 a... Compound, specifically a cyclic ether the Heat Capacity of aqueous solutions, with Updated Density viscosity. Basic functioning of the ease of flow manual consent nb: Energy values in kcal/kg are on... Functioning of the fluid used by third parties or publishers to show you personalized...., miscible with water forming hydrofluoric acid is a viscosity of hf molecular weight of and., 54 ( 6 ), precursor to metal fluorides viscosity of hf produced in this way can! The periodic table here you can accept all cookies by clicking on the electrolysis of aluminium fluoride in with! Will attack glass, concrete, rubber, quartz and alloys containing silica presence a.

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