Saybolt universal viscosity

The values of Saybolt Universal Viscosity at 100°F and at 210°F are taken directly from the comprehensive ASTM Viscosity Table, Special Technical Publication No. 43A (1953) by permission of the publishers, American Society for Testing Materials, 1916 Race St., Philadelphia 3, Pa. 

Saybolt Universal Viscosity at Redwood Seconds at Engler Degrees at all Temps. 

To obtain the Saybolt Universal viscosity equivalent to a kinematic viscosity determined at FF., multiply the equivalent Saybolt Universal viscosity at lOOT. by 1 + (t — 100) 0.000064 e.g., 10 centistokes at 210T are equivalent to 58.91 X 1.0070, or 59.32 Saybolt Universal Viscosity at 210°F. 

Kinematic Viscosity, cSt Equivalent Saybolt Universal Viscosity, Sus ... 

The Saybolt universal viscosity (SUS) (ASTM D88) is the time in seconds required for the flow of 60 mL of petroleum from a container, at constant temperature, through a calibrated orifice. The Saybolt furol viscosity (SFS) (ASTM D88) is determined in a similar manner except that a larger orifice is employed. 

The Saybolt universal viscosity equivalent to a given kinematic viscosity varies slightly with the temperature at which the determination is made because the temperature of the calibrated receiving flask used in the Saybolt method is not the same as that of the oil. Conversion factors are used to convert kinematic viscosity from 2 to 70 cSt at 38°C (100°F) and 99°C (210°F) to equivalent Saybolt universal viscosity in seconds. Appropriate multipliers are listed to convert kinematic viscosity over 70 cSt. For a kinematic viscosity determined at any other temperature, the equivalent Saybolt universal value is calculated by use of the Saybolt equivalent at 38°C (100°F) and a multiplier that varies with the temperature ... 

Saybolt Universal viscosity the time, in seconds (Saybolt Universal seconds, SUS), for 60 mL of fluid to flow through a capillary tube in... 

Viscosity, kinematic, ASTM Designation D 445-39T. Conversion to Saybolt Universal viscosity, ASTM Designation D 446-39. Kinematic viscosity index, ASTM Designation D 567-40T. APIgravity, ASTM Designation D 287-39. Pour point, ASTM Designation D 97-39. Unsulfonated residue, ASTM Designation D 483-40. 

For the paraffin, a highly acid-treated oil having a Saybolt Universal viscosity of 40 to 50 seconds at 100° F. is preferred. Reaction is rapid at 200° F. using about 1.7 parts by weight of sulfur dioxide and 0.9 part by weight of chlorine for each part of paraffin. The resulting sulfonyl chloride is neutralized with sodium hydroxide and separated from unreacted oil prior to drying. 

SAYBOLT UNIVERSAL VISCOSITY. The efflux time in seconds (SUS) of 60 mL of sample flowing through a calibrated Universal onfice in a Saybolt viscometer under specified conditions. 

See also Saybolt Universal Viscosity and Viscometer (or Viscosimeter). 

Redwood viscosity—method for determining the viscosity of petroleum products it is widely used in Europe, but has limited use in the U.S. The method is similar to Saybolt Universal viscosity viscosity values are reported as "Redwood seconds."... 

Saybolt Universal viscosity-the efflux time in seconds required for 60 milliliters of a petroleum product to flow through the calibrated orifice of a Saybolt Universal viscometer, under carefully controlled temperature, as prescribed by test method ASTM D 88. This method has largely been supplanted by the kinematic viscosity method. See Saybolt Furol viscosity, viscosity. 

SSU, SUS (Saybolt Universal seconds)—see Saybolt Universal viscosity. 

In addition to kinematic viscosity, there are other methods for determining viscosity, including Saybolt Universal viscosity, Saybolt Durol viscosity, Engler viscosity, and Redwood viscosity. Since viscosity... 

Values of VGC near 0.800 indicate an oil of paraffinic character (see paraffin), values close to 1.00 indicate a preponderance of aromatic structures. Like other indicators of hydrocarbon composition (as opposed to a specific laboratory analysis), VGC should not be indiscriminately applied to residual oils (see bottoms), asphaltic materials, or samples containing appreciable quantities of non-hydrocarbons. See Saybolt Universal Viscosity, specific gravity. 

The Saybolt universal viscosity (SUS) equivalent to a given kinematic viscosity varies slightly with the temperature at which the determination is made because the temperature of the calibrated receiving flask used in the Saybolt method is not the same as that of the oil. Conversion factors are used to convert... 

VGC (viscosity-gravity constant) an index of the chemical composition of crude oil defined by the general relation between specific gravity, sg, at 60°F and Saybolt Universal viscosity, SUV, at 100°F ... 

Standard Practice for Conversion of Kinematic Viscosity to Saybolt Universal Viscosity or Say-bolt Furol Viscosity, ASTM Designation D 2163-93, American Society for Testing and Materials Philadelphia, PA, July, 1993. 

Furol viscosity. The efflux time in seconds (SFS) of 60 mL of sample flowing through a calibrated Furol orifice in a Saybolt viscometer under specified conditions. Furol viscosity is approximately 1/10 of Saybolt Universal viscosity and is used for fuel oil and residual materials of relatively high viscosity. Furol is derived from the words fuel and road oils. 

See Furol viscosity Saybolt Universal viscosity. (2) Abbreviation for sodium formaldehyde sulfoxy-late. 

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