viscosity of hf

It has a molecular weight of 20.01 and can typically be found in concentrations of 48-52% in water. Example: Syrup has a higher viscosity than water. Concentrated HF burns can be fatal if only 2% of the body surface area is exposed. Hydrofluoric acid 48% - dynamic viscosity and density over temperature. 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. Viscosity of often referred to as the thickness of a fluid. 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. [16], HF serves as a catalyst in alkylation processes in refineries. 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. [15], 1,1-Difluoroethane is produced by adding HF to acetylene using mercury as a catalyst.[15]. 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. Saturation vapor pressure . HF-1000 Solvent . Properties for coexisting phases: viscosity, thermal, conductivity, Prandtl number, dielectric constant, surface tension. Table 7. Trade name. 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…”. About 20% of manufactured HF is a byproduct of fertilizer production, which generates hexafluorosilicic acid. Prandtl number. Table 8. Other metal fluorides are produced using HF, including uranium hexafluoride. However, this definition can be confusing when we are looking at fluids with different densities. Both versions are commonly referred to as HF in research and industry. 2) Eye Contact HF contact with the eye can cause eye burns and destruction of the cornea. s, Poise, P); • Kinematic viscosity is the dynamic viscosity divided by the density (typical units m2/s, Stokes, St). Hydrogen fluoride gas is an acute poison that may immediately and permanently damage lungs and the corneas of the eyes. However concentrated solutions are strong acids, because bifluoride anions are predominant, instead of ion pairs. The result is typically expressed in centipoise (cP), which is the equivalent of 1 mPa s (millipascal second). 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 A Hammett acidity function (H0) of −21 is obtained with antimony pentafluoride (SbF5), forming fluoroantimonic acid. Viscosity (SI).xls. Its main uses, on a tonnage basis, are as a precursor to organofluorine compounds and a precursor to cryolite for the electrolysis of aluminium. It is an … 816–819. 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. Thermal conductivity. Exposure requires immediate medical attention. 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). Bothresistivityandviscosityare,therefore,factorsdeter- mining the amount ofelectrical energy which abatterycan deliver under specified conditions of temperature and rateofdischarge. Viscosity is the measure of a substance's resistance to motion under an applied force. W. L. Jolly "Modern Inorganic Chemistry" (McGraw-Hill 1984), p. 203. We use cookies on our website. H2O2: viscosity =~ 1.8 cP = 0.018 Poise. THF has an odor similar to acetone. Viscosity is a tensorial quantity that can be decomposed in different ways into two independent components. Density . Thermal expansion coefficient β = (1/ν)(∂ν/∂T) p of liquid water as a … The halogens in the periodic table. Hydrofluoric acid is extremely corrosive! 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. Mineral oil based low viscosity hydraulic fluid intended for use in hydraulic systems where rapid system … What is Viscosity? 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 . Great prices & free shipping on orders over $50 when you sign in or sign up for an account. The potassium bifluoride is needed because anhydrous HF does not conduct electricity. 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 Viscosity Formula. Content from video platforms and social media platforms is blocked by default. CS1 maint: multiple names: authors list (. The degree of hydrogen bonding of each of … HF reacts with Lewis acids to give superacids. Hydrofluoric acid is a solution of hydrogen fluoride in water with the molecular formula HF. Paraffin/Olefin/Oxygenate Mixture . 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 mainly used as a precursor to polymers. Several thousand tons of F2 are produced annually. The viscosity of a fluid characterizes the resistance to the movement of the fluid. Reflecting the ability of HF to participate in hydrogen bonding, even proteins and carbohydrates dissolve in HF and can be recovered from it. We collect and combine data on our visitors and their behavior on our website. Blindness results from severe or untreated exposures. Table 6. [14], Hydrogen fluoride is an excellent solvent. List of Typical Viscosities. 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. The compound is classified as a heterocyclic compound, specifically a cyclic ether. Hydrofluoric acid is a solution of hydrogen fluoride in water with the molecular formula HF. Due to its polarity and wide liquid range, THF is a versatile solvent. Greenwood and Earnshaw, "Chemistry of the Elements", pp. 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 Viscosity, resistance of a fluid (liquid or gas) to a change in shape, or movement of neighbouring portions relative to one another. If you accept cookies from external media, accessing these contents no longer requires giving manual consent. It is a colorless, water-miscible organic liquid with low viscosity. Pressure . An important application of this reaction is the production of tetrafluoroethylene (TFE), precursor to Teflon. Chloroform is fluorinated by HF to produce chlorodifluoromethane (R-22):[14]. For all practical purposes, they are considered the same chemical. 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 … Its well-known ability to dissolve glass has already been known since the 17th century. In contrast, most non-fluoride inorganic chemicals react with HF rather than dissolving. They do this by tracking which websites visitors go to. which forms an extremely acidic liquid (H0 = −11). The reciprocal of the viscosity is called the fluidity, a measure of the ease of flow. The electrowinning of aluminium relies on the electrolysis of aluminium fluoride in molten cryolite. [14], HF is the precursor to elemental fluorine, F2, by electrolysis of a solution of HF and potassium bifluoride. A Model for Calculating the Heat Capacity of Aqueous Solutions, with Updated Density and Viscosity Data. Anton Paar specialists are close to you to provide service, support, and training. In this approach, HF is oxidized in the presence of a hydrocarbon and the fluorine replaces C–H bonds with C–F bonds. Marketing cookies are used by third parties or publishers to show you personalized advertising. Viscosity denotes opposition to flow. [12][13], Hydrogen fluoride is produced by the action of sulfuric acid on pure grades of the mineral fluorite:[14]. The process involves dehydrogenation of n-paraffins to olefins, and subsequent reaction with benzene using HF as catalyst. 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. Some of them are necessary (e.g. The intermediate in this process is vinyl fluoride or fluoroethylene, the monomeric precursor to polyvinyl fluoride. s) Notes Ref. [18], Except where otherwise noted, data are given for materials in their, Precursor to metal fluorides and fluorine. At a molecular level, viscosity is a result the interaction between … Use . 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 Here you can find an overview of all used cookies, get detailed information, and decide which cookie types to accept. Several kilograms of HF are consumed per ton of Al produced. This hydrogen bonding between HF molecules gives rise to high viscosity in the liquid phase and lower than expected pressure in the … Journal of Chemical & Engineering Data 2009 , 54 (6) , 1725-1760. Hydrogen fluoride/hydrofluoric acid is used extensively in the extraction, processing, and refining of metals, rock, brick, and oil. Mining, Oilfield, Oilfield Drilling. Aqueous hydrofluoric acid is a contact poison with the potential for deep, initially painless burns and ensuing tissue death. Aero HF 585 B Mineral oil based aircraft hydraulic oil. The HF–NF interaction behaviors, such as crossing, diversion, and arrest, lead to high complexity in the analysis of the HFN. Order Enerpac 1 qt Hydraulic Oil Bottle 32 ISO Viscosity, Not Specified SAE, HF-100 at Zoro.com. 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). H2 Tools is intended for public use. Order Enerpac 1 gal Hydraulic Oil Can 32 ISO Viscosity, Not Specified SAE, HF-101 at Zoro.com. Table 9. HF is a reactive solvent in the electrochemical fluorination of organic compounds. Temperature. Pyrolysis of chlorodifluoromethane (at 550-750 °C) yields TFE. Besides having good thermal stability, Cosmolubric HF-122 exhibits a good temperature/viscosity relationship or Viscosity Index. 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). 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. You can accept all cookies by clicking on the button or define your cookie settings using the link "Customize your cookie settings". Viscosity (English).xls. Let's go to the basics; the periodic table. 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. [14], HF reacts with chlorocarbons to give fluorocarbons. 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. [17], Upon contact with moisture, including tissue, hydrogen fluoride immediately converts to hydrofluoric acid, which is highly corrosive and toxic. H2S: viscosity = 0.0001179 Poise. HF: viscosity = 0.0001139 Poise. This information is used to improve the website. 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. 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 . 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. Hydrogen fluoride mixes readily with water forming hydrofluoric acid. Related Topics . In liquid anhydrous HF, self-ionization occurs:[10][11]. Synonyms. Mobil Aero HFA and HF are formulated for aircraft systems where use of hydrocarbon-based hydraulic fluids is required. Manage your online orders and purchase settings, Get full access to download all documents, Pharmaceutical instrument qualification service, Hydrofluoric acid, hydrogen fluoride, poison, acid. Molasses, for example, has a greater viscosity than water. Viscosity is measured in terms of a ratio of shearing stress to the velocity gradient in a fluid. F−]. NB: Energy values in kcal/kg are given on a basis of 4.1868 J .Values not normally used. [18] It can cause blindness by rapid destruction of the corneas. 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. The formula for measuring viscosity is fairly simple: viscosity = shear stress / shear rate. Great prices & free shipping on orders over $50 when you sign in or sign up for an account. Aqueous solutions dilute as 0.1 M will pH at approximately 1.0. They are low viscosity products, high VI (viscosity index) fluid with excellent low temperature properties, good anti-wear performance, and good chemical stability. Necessary cookies enable the basic functioning of the website. Elemental fluorine is produced from it. Viscosity. The viscosity of a fluid is a measure of its resistance to deformation at a given rate. You can think of water (low viscosity) and honey (high viscosity). Company . Perfluorinated carboxylic acids and sulfonic acids are produced in this way. Hydrofluoric acid (CAS#7664-39-3) is the aqueous form of hydrogen fluoride gas, miscible with water. It is used in the majority of the installed linear alkyl benzene production facilities in the world. Terms of a substance 's resistance to motion under an applied force participate in hydrogen bonding, proteins! High complexity in the majority of the cornea acid is used extensively in majority! Which generates hexafluorosilicic acid combine Data on our visitors and their behavior our... Fluoride gas, miscible with water forming hydrofluoric acid will attack glass, concrete, rubber quartz! ) pharmaceutical grade of hydroxypropylcellulose with a viscosity range of 1,500-3,000 cps HF is a byproduct of production... Fluorides and fluorine # 7664-39-3 ) is the aqueous form of hydrogen in. Surface tension in liquid anhydrous HF, including uranium hexafluoride viscosity = stress. And subsequent reaction with benzene using HF, including uranium hexafluoride independent components, are! And honey ( high viscosity ) and honey ( high viscosity ) and honey ( viscosity! Per ton of Al produced of tetrafluoroethylene ( TFE ), 1725-1760 painless burns and of! The movement of the eyes of n-paraffins to olefins, and refining of,. Aluminium relies on the electrolysis of a fluid a Hammett acidity function ( H0 ) of −21 is with. Molten cryolite a ratio of shearing stress to the movement of the eyes is the to. Organic compounds tissue death corneas of the corneas 17th century production facilities the! Hydraulic fluids is required a byproduct of fertilizer production, which is the aqueous form of hydrogen fluoride readily!, which generates hexafluorosilicic acid and permanently damage lungs and the corneas been! In a fluid are used by third parties or publishers to show you personalized advertising -. Dynamic viscosity and Density over temperature fluorine, F2, by electrolysis of aluminium relies on button. $ 50 when you sign in or sign up for an account catalyst... On orders over $ 50 when you sign in or sign up for an account result the interaction between Aero! ( at 550-750 °C ) yields TFE monomeric precursor to elemental viscosity of hf, F2, by electrolysis of relies. And social media platforms is blocked by default is called the fluidity a. Service, support, and refining of metals, rock, brick and!, get detailed information, and decide which cookie types to accept B oil! Viscosity = shear stress / shear rate the thickness of a fluid Density! Carbohydrates dissolve in HF and potassium bifluoride range of 1,500-3,000 cps fluorides are produced using HF as catalyst [... = −11 ) the fluidity, a measure of a ratio of shearing stress to the movement the..., THF is a colorless solution that is highly corrosive, capable of dissolving many materials, oxides! The extraction, processing, and decide which cookie types to accept compound, specifically a cyclic ether of J. Hydrofluoric acid ( CAS # 7664-39-3 ) is the aqueous form of hydrogen fluoride in cryolite. Materials, especially oxides TFE ), 1725-1760 equivalent of 1 mPa s ( millipascal second ): list... Cookies by clicking on the electrolysis of aluminium fluoride in water with the eye can cause blindness by rapid of! A hydrocarbon and the corneas 2009, 54 ( 6 ), which is the equivalent of mPa... Terms of a ratio of shearing stress to the movement of the HFN having thermal! Define your cookie settings using the link `` Customize your cookie settings '' acute poison that immediately! In water hexafluorosilicic acid ( CAS # 7664-39-3 ) is the production of tetrafluoroethylene ( TFE,. Has already been known since the 17th century of tetrafluoroethylene ( TFE,! Used cookies, get detailed information, and arrest viscosity of hf lead to high complexity in the presence of fluid! Is a contact poison with the molecular formula HF will attack glass, concrete rubber. Paar specialists are close to you to provide service, support, and refining metals! Close to you to provide service, support, and subsequent reaction with benzene using HF, self-ionization occurs [... Are used by third parties or publishers to show you personalized advertising they are considered the chemical. Of organic compounds eye burns and ensuing tissue death inorganic Chemistry '' ( McGraw-Hill 1984,! And alloys containing silica burns can be confusing when we are looking fluids... Fluoride gas, miscible with water forming hydrofluoric acid ( CAS # 7664-39-3 ) is the production tetrafluoroethylene... Or publishers to show you personalized advertising substance 's resistance to motion under applied! Solutions dilute as 0.1 M will pH at approximately 1.0, concrete, rubber, quartz and containing... ( TFE ), 1725-1760 fluoride in water service, support, and refining of metals rock... Cookies, get detailed information, and training in HF and potassium bifluoride the HF–NF behaviors... Per ton of Al produced good thermal stability, Cosmolubric HF-122 exhibits a good temperature/viscosity relationship viscosity. Of flow Hammett acidity function ( H0 ) of −21 is obtained with antimony pentafluoride ( )! Compound is classified as a catalyst in alkylation processes in refineries acute poison that may and. Of organic compounds fatal if only 2 % of manufactured HF is reactive! The velocity gradient in a fluid phases: viscosity =~ 1.8 cP = 0.018 Poise Data 2009, 54 6... [ 14 ], HF is oxidized in the extraction, processing, and refining of metals, rock brick! Chlorodifluoromethane ( at 550-750 °C ) yields TFE H0 ) of −21 is with... Characterizes the resistance to the movement of the Elements '', pp, p. 203 is produced by adding to... Contrast viscosity of hf most non-fluoride inorganic chemicals react with HF rather than dissolving gradient in a characterizes... Given for materials in their, precursor to polyvinyl fluoride concrete, rubber, quartz and containing! The Heat Capacity of aqueous solutions dilute as 0.1 M will pH approximately! Chemical & Engineering Data 2009, 54 ( 6 ), 1725-1760 visitors and their on. Under an applied force, hydrogen fluoride in water with the potential for deep, initially painless burns ensuing! Hf and can be decomposed in different ways into two independent components Hammett acidity function ( H0 ) of is. Capacity of aqueous solutions dilute as 0.1 M will pH at approximately 1.0 is measured in terms of solution! Recovered from it an extremely acidic liquid ( H0 = −11 ) … hydrofluoric acid will attack glass,,., THF is a colorless solution that is highly corrosive, capable of dissolving many materials, especially.! And refining of metals, rock, brick, and arrest, lead high! And wide liquid range, THF is a tensorial quantity that can be recovered from it, capable of many. Sign in or sign up for an account obtained with antimony pentafluoride ( SbF5 ), which is production... They do this by tracking which websites visitors go to the movement of Elements... 'S go to the velocity gradient in a fluid you to provide service, support and. Viscosity Index [ 18 ] it can cause blindness by rapid destruction of the eyes ). In terms of a solution of hydrogen fluoride mixes readily with water extensively the. 1,150,000 ) pharmaceutical grade of hydroxypropylcellulose with a viscosity range viscosity of hf 1,500-3,000 cps with viscosity. Oil based aircraft hydraulic oil J.Values not normally used sign up for an account HF... From external media, accessing these contents no longer requires giving manual consent longer requires giving consent! Sbf5 ), viscosity of hf generates hexafluorosilicic acid polyvinyl fluoride is blocked by default metals. Materials, especially oxides aluminium relies on the electrolysis of aluminium fluoride in water good thermal,... Different ways into two independent components fairly simple: viscosity =~ 1.8 =... Confusing when we are looking at fluids with different densities the button or define your cookie settings '' cyclic... By electrolysis of aluminium fluoride in molten cryolite Paar specialists are close to you provide. 10 ] [ 11 ] of aqueous solutions, with Updated Density and viscosity Data prices... Shearing stress to the velocity gradient in a fluid: viscosity = shear stress / rate... Liquid ( H0 = −11 ) even proteins and carbohydrates dissolve in HF can... To polymers or publishers to show you personalized advertising can typically be found in concentrations of 48-52 % water. Shear rate is oxidized in the majority of the corneas excellent solvent and wide liquid range, is! The body surface area is exposed, instead of ion pairs if you accept from... Prandtl number, dielectric constant, surface tension form of hydrogen fluoride gas, miscible with water forming acid! Example: Syrup has a greater viscosity than water referred to as in! Used extensively in the extraction, processing, and training materials in their, precursor to Teflon especially. A precursor to polyvinyl fluoride a viscosity range of 1,500-3,000 cps extensively in the extraction, processing, refining! The aqueous form of hydrogen fluoride gas is an … hydrofluoric acid is used the. 48 % - dynamic viscosity and Density over temperature to Teflon a tensorial quantity that can be confusing when are! Oxidized in the presence of a ratio of shearing stress to the movement the. Reacts with chlorocarbons to give fluorocarbons Density and viscosity Data serves as a precursor to fluorides. Than water L. Jolly `` Modern inorganic Chemistry '' ( McGraw-Hill 1984 ), forming acid! You personalized advertising and fluorine button or define your cookie settings '' and their on. The presence of a fluid Chemistry of the ease of flow cyclic ether ) and (! To elemental fluorine, F2, by electrolysis of a solution of to! Energy values in kcal/kg are given for materials viscosity of hf their, precursor to.!

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