2-Butene, 2,3-dimethyl-
- Formula: C6H12
- Molecular weight: 84.1595
- IUPAC Standard InChIKey: WGLLSSPDPJPLOR-UHFFFAOYSA-N
- CAS Registry Number: 563-79-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Tetramethylethylene; 1,1,2,2-Tetramethylethylene; 2,3-Dimethyl-2-butene; 2,3-Dimethylbut-2-ene; 2,3-Dimethylbutene-2; (CH3)2C=C(CH3)2; Tetramethylethene
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Gas phase ion energetics data
Go To: Top, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C6H12+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 8.27 ± 0.01 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 194.5 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 187.8 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.27 ± 0.02 | PE | Bieri, Burger, et al., 1977 | LLK |
8.16 | EI | Lossing and Traeger, 1975 | LLK |
8.271 ± 0.005 | PE | Masclet, Grosjean, et al., 1973 | LLK |
8.26 | PE | Frost and Sandhu, 1971 | LLK |
8.30 | PI | Bralsford, Harris, et al., 1960 | RDSH |
8.30 | PE | Kovac, Mohraz, et al., 1980 | Vertical value; LLK |
10.52 | PE | McAlduff and Houk, 1977 | Vertical value; LLK |
8.46 | PE | Mollere, Houk, et al., 1976 | Vertical value; LLK |
8.42 | PE | Fuss and Bock, 1974 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C5H9+ | 8.16 | CH3 | EI | Lossing and Traeger, 1975, 2 | LLK |
C5H9+ | 10.32 | CH3 | EI | Lossing and Traeger, 1975 | LLK |
IR Spectrum
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Phase Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
Owner | NIST Standard Reference Data Program Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Sadtler Research Labs Under US-EPA Contract |
State | gas |
Mass spectrum (electron ionization)
Go To: Top, Gas phase ion energetics data, IR Spectrum, UV/Visible spectrum, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Japan AIST/NIMC Database- Spectrum MS-NW-3539 |
NIST MS number | 230825 |
UV/Visible spectrum
Go To: Top, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
Source | Johnson, 1966 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 19914 |
Instrument | Unicam SP 500 |
Boiling point | 73.2/ 760 mm |
Gas Chromatography
Go To: Top, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | Methyl Silicone | 30. | 630.4 | Soják, Addová, et al., 2002 | He; Column length: 150. m; Column diameter: 0.250 mm |
Capillary | Squalane | 30. | 624.2 | Soják, Addová, et al., 2002 | He; Column length: 93. m; Column diameter: 0.250 mm |
Capillary | Squalane | 25. | 624. | Hilal, Carreira, et al., 1994 | |
Capillary | OV-101 | 40. | 630. | Laub and Purnell, 1988 | |
Capillary | OV-101 | 60. | 631. | Laub and Purnell, 1988 | |
Capillary | OV-101 | 80. | 631. | Laub and Purnell, 1988 | |
Capillary | OV-101 | 50. | 630.6 | Boneva and Dimov, 1986 | 100. m/0.27 mm/0.9 μm, N2 |
Capillary | OV-101 | 70. | 631.1 | Boneva and Dimov, 1986 | 100. m/0.27 mm/0.9 μm, N2 |
Capillary | Squalane | 50. | 625.3 | Boneva and Dimov, 1986 | N2; Column length: 100. m; Column diameter: 0.25 mm |
Capillary | Squalane | 70. | 626. | Boneva and Dimov, 1986 | N2; Column length: 100. m; Column diameter: 0.25 mm |
Packed | SE-30 | 42. | 630. | Rudenko, Mal'tsev, et al., 1985 | Column length: 3. m |
Capillary | DB-1 | 40. | 631. | Lubeck and Sutton, 1984 | 60. m/0.264 mm/0.25 μm, H2 |
Capillary | HP-PONA | 40. | 631. | Lubeck and Sutton, 1984 | 50. m/0.21 mm/0.5 μm, H2 |
Capillary | Squalane | 50. | 624.8 | Bajus, Veselý, et al., 1979 | Column length: 100. m; Column diameter: 0.25 mm |
Capillary | Squalane | 70. | 626. | Bajus, Veselý, et al., 1979 | Column length: 100. m; Column diameter: 0.25 mm |
Packed | Squalane | 80. | 626. | Chrétien and Dubois, 1977 | |
Capillary | Squalane | 50. | 625. | Chretien and Dubois, 1976 | |
Capillary | Squalane | 50. | 625. | Rijks, van den Berg, et al., 1974 | |
Capillary | Squalane | 50. | 625. | Rijks, van den Berg, et al., 1974 | |
Capillary | Squalane | 70. | 626. | Rijks, van den Berg, et al., 1974 | |
Capillary | Squalane | 70. | 626. | Rijks, van den Berg, et al., 1974 | |
Capillary | Squalane | 50. | 625. | Rijks and Cramers, 1974 | N2; Column length: 100. m; Column diameter: 0.25 mm |
Capillary | Squalane | 70. | 626. | Rijks and Cramers, 1974 | N2; Column length: 100. m; Column diameter: 0.25 mm |
Capillary | Squalane | 40. | 614. | Matukuma, 1969 | N2; Column length: 91.4 m; Column diameter: 0.25 mm |
Packed | Squalane | 27. | 625. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 49. | 626. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 67. | 627. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 86. | 627. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Capillary | Squalane | 70. | 625. | Schomburg, 1967 | Ar; Column length: 100. m |
Packed | Squalane | 26. | 612. | Zulaïca and Guiochon, 1966 | Column length: 10. m |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Methyl Silicone | 632.0 | Soják, Addová, et al., 2002 | He, 1. K/min; Column length: 150. m; Column diameter: 0.250 mm; Tstart: 30. C; Tend: 200. C |
Capillary | Petrocol DH | 624.32 | White, Douglas, et al., 1992 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Capillary | Petrocol DH | 624.38 | White, Douglas, et al., 1992 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Capillary | Petrocol DH | 624. | White, Hackett, et al., 1992 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Normal alkane RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | Squalane | 40. | 624.2 | Sojak, Addova, et al., 2000 | He; Column length: 93. m; Column diameter: 0.25 mm |
Capillary | Methyl Silicone | 50. | 625. | N/A | N2; Column length: 74.6 m; Column diameter: 0.28 mm |
Capillary | Squalane | 70. | 625. | Schomburg, 1966 |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-1 | 630. | Ramnas, Ostermark, et al., 1994 | 50. m/0.32 mm/1.0 μm, He, 2. K/min; Tstart: -20. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Methyl Silicone | 627. | Chen and Feng, 2007 | Program: not specified |
Capillary | Polydimethyl siloxane | 626. | Junkes, Castanho, et al., 2003 | Program: not specified |
Capillary | Methyl Silicone | 630. | Zenkevich and Marinichev, 2001 | Program: not specified |
Packed | SE-30 | 649. | Robinson and Odell, 1971 | N2, Chromosorb W; Column length: 6.1 m; Program: 50C910min) => 20C/min => 90(6min) => 10C/min => 150C(hold) |
Packed | Squalane | 631. | Robinson and Odell, 1971 | N2, Embacel; Column length: 3.0 m; Program: 25C(5min) => 2C/min => 35 => 4C/min => 95C(hold) |
References
Go To: Top, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Bieri, Burger, et al., 1977
Bieri, G.; Burger, F.; Heilbronner, E.; Maier, J.P.,
Valence ionization enrgies of hydrocarbons,
Helv. Chim. Acta, 1977, 60, 2213. [all data]
Lossing and Traeger, 1975
Lossing, F.P.; Traeger, J.C.,
Stabilization in cyclopentadienyl, cyclopentenyl, and cyclopentyl cations,
J. Am. Chem. Soc., 1975, 97, 1579. [all data]
Masclet, Grosjean, et al., 1973
Masclet, P.; Grosjean, D.; Mouvier, G.,
Alkene ionization potentials. Part I. Quantitative determination of alkyl group structural effects,
J. Electron Spectrosc. Relat. Phenom., 1973, 2, 225. [all data]
Frost and Sandhu, 1971
Frost, D.C.; Sandhu, J.S.,
Ionization potentials of ethylene and some methyl-substituted ethylenes as determined by photoelectron spectroscopy,
Indian J. Chem., 1971, 9, 1105. [all data]
Bralsford, Harris, et al., 1960
Bralsford, R.; Harris, P.V.; Price, W.C.,
The effect of fluorine on the electronic spectra and ionization potentials of molecules,
Proc. Roy. Soc. (London), 1960, A258, 459. [all data]
Kovac, Mohraz, et al., 1980
Kovac, B.; Mohraz, M.; Heilbronner, E.; Boekelheide, V.; Hopf, H.,
Photoelectron spectra of the cyclophanes,
J. Am. Chem. Soc., 1980, 102, 4314. [all data]
McAlduff and Houk, 1977
McAlduff, E.J.; Houk, K.N.,
Photoelectron spectra of substituted oxiranes and thiiranes. Substituent effects on ionization potentials involving σ orbitals,
Can. J. Chem., 1977, 55, 318. [all data]
Mollere, Houk, et al., 1976
Mollere, P.D.; Houk, K.N.; Bomse, D.S.; Morton, T.H.,
Photoelectron spectra of sterically congested alkenes and dienes,
J. Am. Chem. Soc., 1976, 98, 4732. [all data]
Fuss and Bock, 1974
Fuss, W.; Bock, H.,
Photoelectron spectra and molecular properties. XXXVI. (H3C)3B, (H3C)2BF, (H3C)2BN(CH3)2, and (H3C)2CC(CH3)2: The use of ionization potentials in assigning UV spectra,
J. Chem. Phys., 1974, 61, 1613. [all data]
Lossing and Traeger, 1975, 2
Lossing, F.P.; Traeger, J.C.,
Free radicals by mass spectrometry XLVI. Heats of formation of C5H7 and C5H9 radicals and cations.,
J. Am. Chem. Soc., 1975, 19, 9. [all data]
Johnson, 1966
Johnson, E.A.,
UV atlas of organic compounds, 1966, 1, A1/3. [all data]
Soják, Addová, et al., 2002
Soják, L.; Addová, G.; Kubinec, R.; Kraus, A.; Hu, G.,
Gas chromatographic-mass spectrometric characterization of all acyclic C5-C7 alkenes from fluid catalytic cracked gasoline using polydimethylsiloxane and squalane stationary phases,
J. Chromatogr. A, 2002, 947, 1, 103-117, https://doi.org/10.1016/S0021-9673(01)01564-3
. [all data]
Hilal, Carreira, et al., 1994
Hilal, S.H.; Carreira, L.A.; Karickhoff, S.W.; Melton, C.M.,
Estimation of Gas-Liquid Chromatographic Retention Times from Molecular Structure,
J. Chromatogr. A, 1994, 662, 2, 269-280, https://doi.org/10.1016/0021-9673(94)80515-6
. [all data]
Laub and Purnell, 1988
Laub, R.J.; Purnell, J.H.,
Specific retention volumes, retention indices, and family-plot regressions of aliphatic, alicyclic, and aromatic hydrocarbon solutes with OV-101 poly (dimethylsiloxane) stationary phase,
J. Hi. Res. Chromatogr. Chromatogr. Comm., 1988, 11, 9, 649-660, https://doi.org/10.1002/jhrc.1240110908
. [all data]
Boneva and Dimov, 1986
Boneva, S.; Dimov, N.,
Gas Chromatographic Retention Indices for Alkenes on OV-101 and Squalane Capillary Columns,
Chromatographia, 1986, 21, 3, 149-151, https://doi.org/10.1007/BF02311743
. [all data]
Rudenko, Mal'tsev, et al., 1985
Rudenko, G.I.; Mal'tsev, V.V.; Studenichnik, V.N.; Ustinov, E.P.,
Gas chromatographic analysis of volatile substances evolved into atmosphere from polymer materials,
Zh. Anal. Khim., 1985, 40, 6, 1119-1127. [all data]
Lubeck and Sutton, 1984
Lubeck, A.J.; Sutton, D.L.,
Kovats Retention Indices of Selected Olefins on Bonded Phase Fused Silica Capillaries,
J. Hi. Res. Chromatogr. Chromatogr. Comm., 1984, 7, 9, 542-544, https://doi.org/10.1002/jhrc.1240070913
. [all data]
Bajus, Veselý, et al., 1979
Bajus, M.; Veselý, V.; Leclercq, P.A.; Rijks, J.A.,
Steam cracking of hydrocarbons. 1. Pyrolysis of heptane,
Ind. Eng. Chem. Prod. Res. Dev., 1979, 18, 1, 30-37, https://doi.org/10.1021/i360069a007
. [all data]
Chrétien and Dubois, 1977
Chrétien, J.R.; Dubois, J.E.,
Topological analysis of gas-liquid chromatographic behavior of alkenes,
Anal. Chem., 1977, 49, 6, 747-756, https://doi.org/10.1021/ac50014a021
. [all data]
Chretien and Dubois, 1976
Chretien, J.R.; Dubois, J.-E.,
New Perspectives in the Prediction of Kovats Indices,
J. Chromatogr., 1976, 126, 171-189, https://doi.org/10.1016/S0021-9673(01)84071-1
. [all data]
Rijks, van den Berg, et al., 1974
Rijks, J.A.; van den Berg, J.H.M.; Diependaal, J.P.,
Characterization of hydrocarbons in complex mixtures by two-dimensional precision gas chromatography,
J. Chromatogr., 1974, 91, 603-612, https://doi.org/10.1016/S0021-9673(01)97941-5
. [all data]
Rijks and Cramers, 1974
Rijks, J.A.; Cramers, C.A.,
High precision capillary gas chromatography of hydrocarbons,
Chromatographia, 1974, 7, 3, 99-106, https://doi.org/10.1007/BF02269819
. [all data]
Matukuma, 1969
Matukuma, A.,
Retention indices of alkanes through C10 and alkenes through C8 and relation between boiling points and retention data,
Gas Chromatogr., Int. Symp. Anal. Instrum. Div Instrum Soc. Amer., 1969, 7, 55-75. [all data]
Hively and Hinton, 1968
Hively, R.A.; Hinton, R.E.,
Variation of the retention index with temperature on squalane substrates,
J. Gas Chromatogr., 1968, 6, 4, 203-217, https://doi.org/10.1093/chromsci/6.4.203
. [all data]
Schomburg, 1967
Schomburg, G.,
Struktur und Retentionsverhalten von Offenkettigen und Cyclischen Kohlenwasserstoffen und Deren Einfacher Substitutionsprodukte,
Anal. Chim. Acta., 1967, 38, 45-64, https://doi.org/10.1016/S0003-2670(01)80560-2
. [all data]
Zulaïca and Guiochon, 1966
Zulaïca, J.; Guiochon, G.,
Analyse des hauts polymères par chromatographie en phase gazeuse de leurs produits de pyrolyse. II. Application à quelques hydrocarbures macromoléculaires purs,
Bull. Soc. Chim. Fr., 1966, 4, 1351-1363. [all data]
White, Douglas, et al., 1992
White, C.M.; Douglas, L.J.; Hackett, J.P.; Anderson, R.R.,
Characterization of synthetic gasoline from the chloromethane-zeolite reaction,
Energy Fuels, 1992, 6, 1, 76-82, https://doi.org/10.1021/ef00031a012
. [all data]
White, Hackett, et al., 1992
White, C.M.; Hackett, J.; Anderson, R.R.; Kail, S.; Spock, P.S.,
Linear temperature programmed retention indices of gasoline range hydrocarbons and chlorinated hydrocarbons on cross-linked polydimethylsiloxane,
J. Hi. Res. Chromatogr., 1992, 15, 2, 105-120, https://doi.org/10.1002/jhrc.1240150211
. [all data]
Sojak, Addova, et al., 2000
Sojak, L.; Addova, G.; Kubinec, R.; Ruman, J.; Hu, G.,
GC-MS characterization of all acyclic C5-C7 alkenes from FCC gasoline using squalane stationary phase,
Petroleum and Coal, 2000, 42, 3-4, 188-194. [all data]
Schomburg, 1966
Schomburg, G.,
Gaschromatographische Retentionsdaten und Struktur Chemischer Verbindungen. II. Methylverzweigungen und Doppelbindungen in Offenkettigen Kohlenwasserstoffen,
J. Chromatogr., 1966, 23, 1-17, https://doi.org/10.1016/S0021-9673(01)98652-2
. [all data]
Ramnas, Ostermark, et al., 1994
Ramnas, O.; Ostermark, U.; Peterson, G.,
Characterization of sixty alkenes in a cat-cracked gasoline naphtha by gas chromatography,
Chromatographia, 1994, 38, 3/4, 222-226, https://doi.org/10.1007/BF02290340
. [all data]
Chen and Feng, 2007
Chen, Y.; Feng, C.,
QSPR study on gas chromatography retention index of some organic pollutants,
Comput. Appl. Chem. (China), 2007, 24, 10, 1404-1408. [all data]
Junkes, Castanho, et al., 2003
Junkes, B.S.; Castanho, R.D.M.; Amboni, C.; Yunes, R.A.; Heinzen, V.E.F.,
Semiempirical Topological Index: A Novel Molecular Descriptor for Quantitative Structure-Retention Relationship Studies,
Internet Electronic Journal of Molecular Design, 2003, 2, 1, 33-49. [all data]
Zenkevich and Marinichev, 2001
Zenkevich, I.G.; Marinichev, A.N.,
Comparison of Topological and Dynamics Molecular Characteristics for Precalculation of Chromatographic Retention Parameters of Organic Compounds (in Russian),
Zh. Struct. Khim., 2001, 42, 5, 893-902. [all data]
Robinson and Odell, 1971
Robinson, P.G.; Odell, A.L.,
A system of standard retention indices and its uses. The characterisation of stationary phases and the prediction of retention indices,
J. Chromatogr., 1971, 57, 1-10, https://doi.org/10.1016/0021-9673(71)80001-8
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.