Standards, National Bureau

Radiation Chemistry Section, Institute of Basic Standards, National Bureau of Standards, Washington, D.C. 

The PCP (Aldrich, catalogue no. 18,168-4, lot no. 03) had no listed molecular weight data. A broad MMD polystyrene (PS) standard (National Bureau of Standards) had a light scattering fl = 257,800 (SRM 706, R7R =2.1). Six of the narrow MMD PS standards (Pressure ChemTcaT Co.) had nominal molecular weights... 

Because of its fundamental nature and superior accuracy and repeatability. this kind of instrument is widely used as a secondary standard (National Bureau of Standards lor calibrating other lower level humidity instruments... 

T. Carrington Institute for Basic Standards, National Bureau of Standards, Washington, D.C., U.S.A. (Now Department of Chemistry, York University, Toronto, Ont., Canada)... 

This work was initiated with a standard National Bureau of Standards (NBS) style single magnetic sector mass spectrometer (see Chapter 1). This capability was sup-... 

Tables of calorimetric data are formd in a. Landolt-Boemstein (1956-71) Zahlenwerte und Funktionen. Springer, Berlin, 6 ed, Vol II, Parts 1-5 continued as Hellwege KH, ed. New Series Group IV Macroscopic and Technical Properties of Matter, b. Am Pet Inst Research Proj 44 Selected Values of Properties of Hydrocarbon and Related Compounds. Thermodynamics Res Center, Texas A M University, College Station, TX. c. Touloukian YS, Ho CY, eds (1970-1979) Thermophysical Properties of Matter, The TPRC Data Series. Vols 4-6, Specific Heat. IFI/Plenum, New York, NY. d. NBS Technical Notes 270-3 to 270-7 (1968-1973) Selected Values of Chemical Thermodynamic Properties. Institute for Basic Standards, National Bureau of Standards, Washington, DC. e. Karapet yants MKh, Karapet yants ML (1970) Thermodynamic Constants of Inorganic and Organic Compounds. Humphrey Sci Publ, Ann Arbor. Translated by Schmork J. f. Lide DR (annual editions) CRC Handbook of Chemistry and Physics. CRC Press, Boca Raton, FL.

Wagman DD, Evans WH, Parker VB, Halow I, BaUey SM, Schumm RH (1968) Selected Values of Chemical Thermodynamic Properties, MBS Technical Note, Institute for Basic Standards, National Bureau of Standards, Washit gbm... 

Cochrane, 1966. Rexmond C. Cochrane. Measures for Progress A History of the National Bureau of Standards. National Bureau of Standards, Miscellaneous Publication No. 275. Washington, D.C. U.S. Government Printing Office. 

The whole operation took about 4 to 5 hours. Bach measurement of alphas from the samples was calibrated by counting a uranium oxide standard (National Bureau of Standards No. 836-5). 

D. D. Eley, ed., Adhesion, The Clarendon Press, Oxford, 1961. E. Passaglia, R. R. Stromberg, and J. Kruger, eds., Ellipsometry in the Measurement of Surfaces and Thin Films, National Bureau of Standards Miscellaneous Publication 256, Washington, DC, 1964. 

Green M S and Sengers J V (eds) 1966 Critical Phenomena, Proc. Conf. (April, 1965) (Washington National Bureau of Standards Miscellaneous Publication 273)... 

Mukeqee P and Mysels K J 1970 Critical Micelle Concentrations of Aqueous Surfactant Systems (National Standard Reference Data System, National Bureau of Standards Circular No 36) (Springfield, VA National Teehnieal Information Serviee)... 

Mrowec S and Werber T 1978 Gas Corrosion of Metals (Washington, DC National Bureau of Standards) Rapp R A (ed) 1983 High Temperature Corrosion—NACE 6 (Flouston, TX NACE)... 

The one-electron reduction of thiazole in aqueous solution has been studied by the technique of pulse radiolysis and kinetic absorption spectrophotometry (514). The acetone ketyl radical (CH ljCOH and the solvated electron e were used as one-electron reducing agents. The reaction rate constant of with thiazole determined at pH 8.0 is fe = 2.1 X 10 mole sec in agreement with 2.5 x 10 mole sec" , the value given by the National Bureau of Standards (513). It is considerably higher than that for thiophene (6.5 x 10" mole" sec" ) (513) and pyrrole (6.0 X10 mole sec ) (513). The reaction rate constant of acetone ketyl radical with thiazolium ion determined at pH 0.8 is lc = 6.2=10 mole sec" . Relatively strong transient absorption spectra are observed from these one-electron reactions they show (nm) and e... 

NIST, National Institute for Science and Technology (formerly the National Bureau of Standards, U.S.). t A.P.I. is the American Petroleum Institute. 

Dielectric constants for a selected group of inorganic and organic compounds are included in Tables 5.17 and 5.18. An extensive list has been compiled by Maryott and Smith, National Bureau Standards Circular 514, Washington, D.C., 1951. 

Table 8.15 Compositions of Standard pH Buffer Solutions [National Bureau of...

To prepare the standard pH buffer solutions recommended by the National Bureau of Standards (U.S.), the indicated weights of the pure materials in Table 8.15 should be dissolved in water of specific conductivity not greater than 5 micromhos. The tartrate, phthalate, and phosphates can be dried for 2 h at 100°C before use. Potassium tetroxalate and calcium hydroxide need not be dried. Fresh-looking crystals of borax should be used. Before use, excess solid potassium hydrogen tartrate and calcium hydroxide must be removed. Buffer solutions pH 6 or above should be stored in plastic containers and should be protected from carbon doxide with soda-lime traps. The solutions should be replaced within 2 to 3 weeks, or sooner if formation of mold is noticed. A crystal of thymol may be added as a preservative. 

Values based on the conventional activity pH scale as defined by the National Bureau of Standards (U.S.) and pertain to a temperature of 25°C [Ref Bower and Bates, J. Research Natl. Bur. Standards U.S., 55 197 (1955) and Bates and Bower, Anal. Chem., 28 1322 (1956)]. Buffer value is denoted by column headed /3. 

D. H. Slade, ed.. Meteorology and Atomic Pnergy 1968, U.S. Atomic Energy Commission, July 1968 available as TlD-24190, Cleatinghouse for Eederal Scientific and Technical Information National Bureau of Standards, U.S. Department of Commerce, Sptingfteld, Va. 

National Institute of Standards and Technology (formerly National Bureau of Standards) nuclear magnetic resonance... 

There are no estabHshed specifications for the standard reference samples used in general chemical analysis. Many such substances, however, are analyzed and certified by the National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS). Specific reference standards are required for many of the analyses included in the USP and NE standards for dmgs. 

V. Babrauskas and co-workers. Fire Hazard Comparison of Fire-FetardedandISion-Fire-FetardedProducts, NBS Special Pubhcation 749, National Bureau of Standards, Gaithersburg, Md., 1987. 

NBS = National Bureau of Standards OSU = Ohio State University FMRC = Factory Mutual Research Corp. 

Research sponsored by BFRIP regarding the use of brominated flame retardants shows that there is no evidence that the use of decabromodiphenyl oxide leads to any unusual risk. In addition, a study by the National Bureau of Standards (now National Institute of Science and Technology) showed that the use of flame retardants significantly decreased the ha2ards associated with burning of common materials under reaUstic fire conditions (73). Work ia Japan confirms this finding (74). 

National Bureau of Standards Technical Notes Washiagton, D.C., 1971, pp. 270—276. 

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