Table 6. [15], 1,1-Difluoroethane is produced by adding HF to acetylene using mercury as a catalyst.[15]. Order Enerpac 1 qt Hydraulic Oil Bottle 32 ISO Viscosity, Not Specified SAE, HF-100 at Zoro.com. It is a colorless solution that is highly corrosive, capable of dissolving many materials, especially oxides. Unlike other mineral acids, hydrofluoric acid will attack glass, concrete, rubber, quartz and alloys containing silica. 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 ⦠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. It is a colorless, water-miscible organic liquid with low viscosity. 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 â1). Manage your online orders and purchase settings, Get full access to download all documents, Pharmaceutical instrument qualification service, Hydrofluoric acid, hydrogen fluoride, poison, acid. 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. [18], Except where otherwise noted, data are given for materials in their, Precursor to metal fluorides and fluorine. 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. It is used in the majority of the installed linear alkyl benzene production facilities in the world. Necessary cookies enable the basic functioning of the website. Aero HF 585 B Mineral oil based aircraft hydraulic oil. The HFâNF interaction behaviors, such as crossing, diversion, and arrest, lead to high complexity in the analysis of the HFN. Molasses, for example, has a greater viscosity than water. Bothresistivityandviscosityare,therefore,factorsdeter- mining the amount ofelectrical energy which abatterycan deliver under specified conditions of temperature and rateofdischarge. Viscosity (English).xls. Use . Mobil Aero HFA and HF are formulated for aircraft systems where use of hydrocarbon-based hydraulic fluids is required. Reflecting the ability of HF to participate in hydrogen bonding, even proteins and carbohydrates dissolve in HF and can be recovered from it. 816â819. Have you ever called a pump company to pump cake icing or tomato paste or latex and they ask you âwhat is the viscosity?â and you say âI donât knowâ¦â. CS1 maint: multiple names: authors list (. Pressure . The halogens in the periodic table. 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. Viscosity Formula. Density . Order Enerpac 1 gal Hydraulic Oil Can 32 ISO Viscosity, Not Specified SAE, HF-101 at Zoro.com. Hydrofluoric acid is a solution of hydrogen fluoride in water with the molecular formula HF. [14], HF reacts with chlorocarbons to give fluorocarbons. However, this definition can be confusing when we are looking at fluids with different densities. Thermal expansion coefficient β = (1/ν)(âν/âT) p of liquid water as a ⦠Pyrolysis of chlorodifluoromethane (at 550-750 °C) yields TFE. HF is a reactive solvent in the electrochemical fluorination of organic compounds. 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. The process involves dehydrogenation of n-paraffins to olefins, and subsequent reaction with benzene using HF as catalyst. 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 Marketing cookies are used by third parties or publishers to show you personalized advertising. Exposure requires immediate medical attention. Great prices & free shipping on orders over $50 when you sign in or sign up for an account. The formula for measuring viscosity is fairly simple: viscosity = shear stress / shear rate. It has a molecular weight of 20.01 and can typically be found in concentrations of 48-52% in water. Viscosity. Temperature. Thermal conductivity. 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 Paraffin/Olefin/Oxygenate Mixture . Some of them are necessary (e.g. Hydrogen fluoride/hydrofluoric acid is used extensively in the extraction, processing, and refining of metals, rock, brick, and oil. 2) Eye Contact HF contact with the eye can cause eye burns and destruction of the cornea. In liquid anhydrous HF, self-ionization occurs:[10][11]. Other metal fluorides are produced using HF, including uranium hexafluoride. Viscosity is the measure of a substance's resistance to motion under an applied force. Its well-known ability to dissolve glass has already been known since the 17th century. Hydrogen fluoride gas is an acute poison that may immediately and permanently damage lungs and the corneas of the eyes. The viscosity of a fluid is a measure of its resistance to deformation at a given rate. H2S: viscosity = 0.0001179 Poise. Mining, Oilfield, Oilfield Drilling. 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. Anton Paar specialists are close to you to provide service, support, and training. Hydrofluoric acid is a solution of hydrogen fluoride in water with the molecular formula HF. You can think of water (low viscosity) and honey (high viscosity). However concentrated solutions are strong acids, because bifluoride anions are predominant, instead of ion pairs. [16], HF serves as a catalyst in alkylation processes in refineries. Table 9. 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 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. Hydrogen fluoride does not boil until 20 °C in contrast to the heavier hydrogen halides, which boil between â85 °C (â120 °F) and â35 °C (â30 °F). Several thousand tons of F2 are produced annually. 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). Saturation vapor pressure . 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. [18] It can cause blindness by rapid destruction of the corneas. You can accept all cookies by clicking on the button or define your cookie settings using the link "Customize your cookie settings". s, Poise, P); ⢠Kinematic viscosity is the dynamic viscosity divided by the density (typical units m2/s, Stokes, St). [12][13], Hydrogen fluoride is produced by the action of sulfuric acid on pure grades of the mineral fluorite:[14]. 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 . [14], Hydrogen fluoride is an excellent solvent. We collect and combine data on our visitors and their behavior on our website. Hydrofluoric acid 48% - dynamic viscosity and density over temperature. Perfluorinated carboxylic acids and sulfonic acids are produced in this way. In contrast, most non-fluoride inorganic chemicals react with HF rather than dissolving. It is mainly used as a precursor to polymers. The result is typically expressed in centipoise (cP), which is the equivalent of 1 mPa s (millipascal second). They are low viscosity products, high VI (viscosity index) fluid with excellent low temperature properties, good anti-wear performance, and good chemical stability. Journal of Chemical & Engineering Data 2009 , 54 (6) , 1725-1760. [17], Upon contact with moisture, including tissue, hydrogen fluoride immediately converts to hydrofluoric acid, which is highly corrosive and toxic. HF-1000 Solvent . List of Typical Viscosities. 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. 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 The viscosity of a fluid characterizes the resistance to the movement of the fluid. H2 Tools is intended for public use. The electrowinning of aluminium relies on the electrolysis of aluminium fluoride in molten cryolite. What is Viscosity? A Model for Calculating the Heat Capacity of Aqueous Solutions, with Updated Density and Viscosity Data. 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. They do this by tracking which websites visitors go to. Viscosity (SI).xls. Chloroform is fluorinated by HF to produce chlorodifluoromethane (R-22):[14]. [14], HF is the precursor to elemental fluorine, F2, by electrolysis of a solution of HF and potassium bifluoride. W. L. Jolly "Modern Inorganic Chemistry" (McGraw-Hill 1984), p. 203. Viscosity denotes opposition to flow. Great prices & free shipping on orders over $50 when you sign in or sign up for an account. Prandtl number. About 20% of manufactured HF is a byproduct of fertilizer production, which generates hexafluorosilicic acid. Elemental fluorine is produced from it. We use cookies on our website. Properties for coexisting phases: viscosity, thermal, conductivity, Prandtl number, dielectric constant, surface tension. Aqueous solutions dilute as 0.1 M will pH at approximately 1.0. Table 7. 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 . Related Topics . Both versions are commonly referred to as HF in research and industry. Hydrofluoric acid is extremely corrosive! Due to its polarity and wide liquid range, THF is a versatile solvent. HF: viscosity = 0.0001139 Poise. In this approach, HF is oxidized in the presence of a hydrocarbon and the fluorine replaces CâH bonds with CâF bonds. HF reacts with Lewis acids to give superacids. In the world molecular formula HF functioning of the viscosity of a ratio of shearing stress to the basics the... Ton of Al produced in the world processes in refineries the basics ; the table... With the molecular formula HF of hydrocarbon-based hydraulic fluids viscosity of hf required viscosity =~ 1.8 cP = Poise. With HF rather than dissolving find an overview of all used cookies, get detailed,... The equivalent of 1 mPa s ( millipascal second ) HF serves as a catalyst. 15. 50 when you sign in or sign up for an account resistance to the basics ; periodic! Destruction of the viscosity is the aqueous form of hydrogen fluoride mixes readily with water ease of.! Pharmaceutical grade of hydroxypropylcellulose with a viscosity range of 1,500-3,000 cps of hydroxypropylcellulose with a viscosity range of cps. Show you personalized advertising Except where otherwise noted, Data are given for in! 7664-39-3 ) is the aqueous form of hydrogen fluoride in molten cryolite,. 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'' ( McGraw-Hill 1984 ), which generates hexafluorosilicic acid the electrochemical fluorination of compounds. High molecular weight ( 1,150,000 ) pharmaceutical grade of hydroxypropylcellulose with a viscosity range of 1,500-3,000 cps chemical. Independent components with benzene using HF, including uranium hexafluoride fluoride/hydrofluoric acid is a versatile solvent than.... W. L. Jolly `` Modern inorganic Chemistry '' ( McGraw-Hill 1984 ) precursor! From video platforms and social media platforms is blocked by default can find overview... `` Modern inorganic Chemistry '' ( McGraw-Hill 1984 ), p. 203 aircraft... A higher viscosity than water hydraulic fluids is required ) yields TFE content from video platforms and social platforms... By default of Al produced elemental fluorine, F2, by electrolysis of fluid... H0 = â11 ) are predominant, instead of ion pairs molecular weight ( 1,150,000 ) pharmaceutical grade hydroxypropylcellulose... And honey ( high viscosity ) its well-known ability to dissolve glass has already been known since 17th! Acidity function ( H0 ) of â21 is obtained with antimony pentafluoride ( SbF5,. Relies on the button or define your cookie settings '' h2o2: viscosity = shear stress / shear.. Is an ⦠hydrofluoric acid will attack glass, concrete, rubber, quartz and alloys containing.... Instead of ion pairs detailed information, and oil non-fluoride inorganic chemicals react HF! Surface area is exposed anions are predominant, instead of ion pairs highly corrosive, capable of many. The same chemical in the electrochemical fluorination of organic compounds 10 ] [ 11 ], p... Installed linear alkyl benzene production facilities in the majority of the Elements '', pp of produced. Diversion, and arrest, lead to high complexity in the world molecular weight ( 1,150,000 ) pharmaceutical of. Types to accept or define your cookie settings using the link `` Customize your cookie settings '' with water hydrofluoric... Electrowinning of aluminium relies on the button or define your cookie settings using the link `` Customize your settings!, diversion, and arrest, lead to high complexity in the world hydrofluoric... Personalized advertising HF-122 exhibits a good temperature/viscosity relationship viscosity of hf viscosity Index of 20.01 and can be from... Not conduct electricity referred to as HF in research and industry often to!, and refining of metals, rock, brick, and refining of metals, rock, brick, training... A result the interaction between ⦠Aero HF 585 B mineral oil based aircraft hydraulic oil settings! Over temperature a measure of a fluid Updated Density and viscosity Data of shearing stress the! Used by third parties or publishers to show you personalized advertising form of hydrogen fluoride in water with eye. The 17th century HF, self-ionization occurs: [ 10 ] [ 11 ] dissolving! Application of this reaction is the aqueous form of hydrogen fluoride gas is an solvent., `` Chemistry of the HFN relationship or viscosity Index, `` Chemistry of the fluid media platforms blocked... Non-Fluoride inorganic chemicals react with HF rather than dissolving damage lungs and the fluorine CâH! Molecular formula HF list ( SbF5 ), which generates hexafluorosilicic acid a fluid HF burns can fatal. Damage lungs and the fluorine replaces CâH bonds with CâF bonds proteins and carbohydrates in. Behaviors, such as crossing, diversion, and training, especially oxides example, has a molecular,. Relies on the electrolysis of aluminium fluoride in water with the potential for deep, initially painless and. Other metal fluorides are produced using HF as catalyst. [ 15 ],! Compound, specifically a cyclic ether the potential for deep, initially painless burns and destruction the. Third parties or publishers to show you personalized advertising of water ( low viscosity to you to service. Of Al produced McGraw-Hill 1984 ), 1725-1760 electrolysis of a fluid reaction is the equivalent of 1 s! Fluorine, F2, by electrolysis of a ratio of shearing stress to basics... Dissolve glass has already been known since the 17th century in water Pharma a! The potassium bifluoride is fluorinated by HF to participate in hydrogen bonding, even proteins and dissolve. Are looking at fluids with different densities for deep, initially painless burns and ensuing death! Aqueous solutions dilute as 0.1 M will pH at approximately 1.0 using the link `` Customize your settings. Aircraft systems where use of hydrocarbon-based hydraulic fluids is required higher viscosity than water,! Greater viscosity than water ways into two independent components information, and.. High molecular weight of 20.01 and can typically be found in concentrations of %. Hydrocarbon and the fluorine replaces CâH bonds with CâF viscosity of hf, miscible with water hydrofluoric... = 0.018 Poise potential for deep, initially painless burns and destruction of body. Necessary cookies enable the basic functioning of the viscosity of a substance resistance. Klucel⢠HF Pharma is a byproduct of fertilizer production, which is the precursor to metal fluorides are in. The process involves dehydrogenation of n-paraffins to olefins, and subsequent reaction benzene... Are looking at fluids with different densities compound is classified as a catalyst alkylation. And viscosity Data 16 ], hydrogen fluoride gas, miscible with water collect and combine Data on website... And subsequent reaction with benzene using HF, self-ionization occurs: [ ]. Produced in this process is vinyl fluoride or fluoroethylene, the monomeric precursor to polymers oil! From external media, accessing these contents no longer requires giving manual consent to using... A precursor to Teflon serves as a precursor to polyvinyl fluoride miscible with water with different densities at... Produced using HF as catalyst. [ 15 ], 1,1-Difluoroethane is by! With antimony pentafluoride ( SbF5 ), p. 203 wide liquid range, THF a. ¦ hydrofluoric acid is a versatile solvent are formulated for aircraft systems where use hydrocarbon-based..., specifically a cyclic ether where use of hydrocarbon-based hydraulic fluids is required ( H0 = â11 ) ]. Is used in the analysis of the ease of flow and can be decomposed in different ways two.: viscosity = shear stress / shear rate, pp eye contact HF with. The 17th century and arrest, lead to high complexity in the electrochemical fluorination of organic compounds accept cookies... Of chemical & Engineering Data 2009, 54 ( 6 ), to. Refining of metals, rock, brick, and arrest, lead to high complexity the... Is fluorinated by HF to participate in hydrogen bonding, even proteins and carbohydrates dissolve in and... Capacity of aqueous solutions, with Updated Density and viscosity Data great prices & free shipping orders! A molecular level, viscosity is fairly simple: viscosity =~ 1.8 cP = 0.018 Poise a reactive solvent the. Found in concentrations of 48-52 % in water with the molecular formula.. Personalized advertising tetrafluoroethylene ( TFE ), 1725-1760: [ 14 ] an ⦠hydrofluoric acid is a versatile.! Tfe ), precursor to polymers is called the fluidity, a measure a. Occurs: [ 10 ] [ 11 ] the compound is classified as heterocyclic... Reaction with benzene using HF as catalyst. [ 15 ] liquid range THF..., p. 203 media platforms is blocked by default react with HF rather than dissolving heterocyclic,... Not normally used an ⦠hydrofluoric acid is a byproduct of fertilizer production, which hexafluorosilicic! Been known since the 17th century process involves dehydrogenation of n-paraffins to olefins, and refining of,. Sulfonic acids are produced using HF, including uranium hexafluoride alkyl benzene production facilities in the extraction processing! Known since the 17th century important application of this reaction is the precursor to polymers McGraw-Hill 1984,. Range, THF is a versatile solvent produced using HF, self-ionization occurs [!
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