Acetamide, N-phenyl-
- Formula: C8H9NO
- Molecular weight: 135.1632
- IUPAC Standard InChIKey: FZERHIULMFGESH-UHFFFAOYSA-N
- CAS Registry Number: 103-84-4
- 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: Acetanilide; Acetamidobenzene; Acetanil; Acetoanilide; Acetylaniline; Antifebrin; Benzenamine, N-acetyl-; N-Acetylaniline; N-Phenylacetamide; Phenalgene; Phenalgin; Acetylaminobenzene; Acetic acid anilide; Acetanilid; Aniline, N-acetyl-; USAF EK-3; AN [Analgesic]; N-Acetylaminobenzene; NSC 7636
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Options:
Condensed phase thermochemistry data
Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, NIST Subscription Links, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | -209.5 ± 1.5 | kJ/mol | Ccr | Sato-Toshima, Kamagughi, et al., 1983 | Author was aware that data differs from previously reported values; ALS |
ΔfH°solid | -209.4 ± 1.0 | kJ/mol | Ccb | Johnson, 1975 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -4224.8 ± 1.0 | kJ/mol | Ccr | Sato-Toshima, Kamagughi, et al., 1983 | Author was aware that data differs from previously reported values; ALS |
ΔcH°solid | -4224.88 ± 0.93 | kJ/mol | Ccb | Johnson, 1975 | ALS |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
179.3 | 298.15 | Nilsson and Wadso, 1986 | DH |
191.6 | 323. | Satoh and Sogabe, 1941 | T = 0 to 100 C. Mean value.; DH |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, NIST Subscription Links, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 577.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 578.15 | K | N/A | Perkin, 1896 | Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 388. ± 2. | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 387.520 | K | N/A | Andon and Connett, 1980 | Uncertainty assigned by TRC = 0.01 K; TRC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
64.8 | 488. | A | Stephenson and Malanowski, 1987 | Based on data from 473. to 577. K.; AC |
66.3 | 402. | N/A | Stull, 1947 | Based on data from 387. to 577. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
387. to 576.9 | 5.37284 | 2920.325 | -32.916 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
80.6 | 313.5 | A | Stephenson and Malanowski, 1987 | Based on data from 303. to 324. K. See also Aihara, 1955.; AC |
87.2 | 326.5 | A | Stephenson and Malanowski, 1987 | Based on data from 317. to 336. K. See also Aihara, 1960.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
21.4 | 386.9 | DSC | Chen, Tang, et al., 2005 | AC |
18.3 | 387.2 | N/A | Vecchio, Catalani, et al., 2004 | AC |
21.67 | 387.5 | N/A | Domalski and Hearing, 1996 | AC |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
21.653 | 387.525 | crystaline, I | liquid | Andon and Connett, 1980, 2 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
55.87 | 387.525 | crystaline, I | liquid | Andon and Connett, 1980, 2 | DH |
Reaction thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, NIST Subscription Links, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C8H8NO- + =
By formula: C8H8NO- + H+ = C8H9NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1454. ± 8.8 | kJ/mol | G+TS | Taft and Bordwell, 1988 | gas phase; B |
ΔrH° | 1476. ± 9.6 | kJ/mol | G+TS | Cumming and Kebarle, 1978 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1425. ± 8.4 | kJ/mol | IMRE | Taft and Bordwell, 1988 | gas phase; B |
ΔrG° | 1447. ± 8.4 | kJ/mol | IMRE | Cumming and Kebarle, 1978 | gas phase; B |
+
= C10H11NO2 +
By formula: C8H9NO + C2H4O2 = C10H11NO2 + H2O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 45.5 ± 0.3 | kJ/mol | Cm | Wadso, 1965 | solid phase; Heat of hydrolysis; ALS |
By formula: C8H9NO + H2O = C6H7N + C2H4O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -42.0 ± 0.3 | kJ/mol | Cm | Wadso, 1965 | solid phase; Heat of hydrolysis; ALS |
By formula: C4H5N3O + C6H7N = C8H9NO + C2H3N3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -72.3 ± 0.3 | kJ/mol | Cm | Wadso, 1962 | solid phase; ALS |
By formula: C3H4N4O + C6H7N = C8H9NO + CH2N4
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -84.6 ± 0.3 | kJ/mol | Cm | Wadso, 1962 | solid phase; ALS |
By formula: C4H6O3 + C6H7N = C8H9NO + C2H4O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -100.9 ± 0.3 | kJ/mol | Cm | Wadso, 1962 | liquid phase; ALS |
Gas phase ion energetics data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, NIST Subscription Links, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.30 ± 0.10 | PE | Bouchoux, 1978 | LLK |
8.60 | EI | Baldwin, Loudon, et al., 1976 | LLK |
8.18 ± 0.03 | EI | Benezra and Bursey, 1971 | LLK |
8.39 ± 0.10 | EI | Cotter, 1964 | RDSH |
8.46 | PE | Nakagaki, Kobayashi, et al., 1980 | Vertical value; LLK |
8.46 ± 0.05 | PE | Szepes, Distefano, et al., 1974 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C2H3O+ | 13.22 ± 0.03 | ? | EI | Benezra and Bursey, 1971 | LLK |
C6H7N+ | 10.60 | ? | EI | Baldwin, Loudon, et al., 1976 | LLK |
C6H7N+ | 10.45 ± 0.03 | CH2=C=O | EI | Benezra and Bursey, 1971 | LLK |
C6H7N+ | 8.88 ± 0.15 | ? | EI | Cotter, 1964 | RDSH |
C8H8NO+ | 11.00 | H | EI | Baldwin, Loudon, et al., 1976 | LLK |
De-protonation reactions
C8H8NO- + =
By formula: C8H8NO- + H+ = C8H9NO
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1454. ± 8.8 | kJ/mol | G+TS | Taft and Bordwell, 1988 | gas phase; B |
ΔrH° | 1476. ± 9.6 | kJ/mol | G+TS | Cumming and Kebarle, 1978 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1425. ± 8.4 | kJ/mol | IMRE | Taft and Bordwell, 1988 | gas phase; B |
ΔrG° | 1447. ± 8.4 | kJ/mol | IMRE | Cumming and Kebarle, 1978 | gas phase; B |
IR Spectrum
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, NIST Subscription Links, References, Notes
Data compiled by: Coblentz Society, Inc.
- SOLID (KBr PELLET); Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm-1 resolution
- SOLID (SPLIT MULL); PERKIN-ELMER 521 (GRATING); DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 2 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, UV/Visible spectrum, Gas Chromatography, NIST Free Links, NIST Subscription Links, 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 | D.HENNEBERG, MAX-PLANCK INSTITUTE, MULHEIM, WEST GERMANY |
NIST MS number | 63771 |
UV/Visible spectrum
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, NIST Subscription Links, 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. 19783 |
Instrument | Unicam SP 500 |
Melting point | 115-115.6 |
Gas Chromatography
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, NIST Free Links, NIST Subscription Links, 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
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Polydimethyl siloxanes | 1362. | Zenkevich and Chupalov, 1996 | Program: not specified |
Capillary | Polydimethyl siloxanes | 1362. | Schutz and Wollrab A., 1988 | Program: not specified |
Other | Methyl Silicone | 1358. | Ardrey and Moffat, 1981 | Program: not specified |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, NIST Subscription Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Sato-Toshima, Kamagughi, et al., 1983
Sato-Toshima, T.; Kamagughi, A.; Nishiyama, K.; Sakiyama, M.; Seki, S.,
Enthalpies of combustion of organic compounds. IV. Acetaneilide and nicotinic acid,
Bull. Chem. Soc. Jpn., 1983, 56, 51-54. [all data]
Johnson, 1975
Johnson, W.H.,
The enthalpies of combustion and formation of acetanilide and urea,
J. Res. NBS, 1975, 79, 487-491. [all data]
Nilsson and Wadso, 1986
Nilsson, S.-O.; Wadso, I.,
A flow-microcalorimetric vessel for solution of slightly soluble solids,
J. Chem. Thermodynam., 1986, 18, 1125-1133. [all data]
Satoh and Sogabe, 1941
Satoh, S.; Sogabe, T.,
The heat capacities of some organic compounds containing nitrogen and the atomic heat of nitrogen. (1), Sci.,
Pap. Inst. Phys. Chem. Res. (Tokyo), 1941, 38, 197-203. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Perkin, 1896
Perkin, W.H.,
LXIX. On Magnetic Rotatory Power, especially of Aromatic Compounds,
J. Chem. Soc., 1896, 69, 1025-1257. [all data]
Andon and Connett, 1980
Andon, R.J.L.; Connett, J.E.,
Calibrants for thermal analysis. measurement of their enthalpies of fusion by adiabatic calorimetry.,
Thermochim. Acta, 1980, 42, 241. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Aihara, 1955
Aihara, A.,
J. Chem. Soc. Jpn. Pure Chem. Sect., 1955, 76, 492. [all data]
Aihara, 1960
Aihara, Ariyuki,
Estimation of the Energy of Hydrogen Bonds Formed in Crystals. III. Amides,
Bull. Chem. Soc. Jpn., 1960, 33, 9, 1188-1194, https://doi.org/10.1246/bcsj.33.1188
. [all data]
Chen, Tang, et al., 2005
Chen, Yan-Ping; Tang, Muoi; Kuo, Ju-Chia,
Solid--liquid equilibria for binary mixtures of N-phenylacetamide with 4-aminoacetophenone, 3-hydroxyacetophenone and 4-hydroxyacetophenone,
Fluid Phase Equilibria, 2005, 232, 1-2, 182-188, https://doi.org/10.1016/j.fluid.2005.03.023
. [all data]
Vecchio, Catalani, et al., 2004
Vecchio, Stefano; Catalani, Alessia; Rossi, Vanessa; Tomassetti, Mauro,
Thermal analysis study on vaporization of some analgesics. Acetanilide and derivatives,
Thermochimica Acta, 2004, 420, 1-2, 99-104, https://doi.org/10.1016/j.tca.2003.09.039
. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Andon and Connett, 1980, 2
Andon, R.J.L.; Connett, J.E.,
Calibrants for thermal analysis. Measurement of their enthalpies of fusion by adiabatic calorimetry,
Thermochim. Acta, 1980, 42, 241-247. [all data]
Taft and Bordwell, 1988
Taft, R.W.; Bordwell, F.G.,
Structural and Solvent Effects Evaluated from Acidities Measured in Dimethyl Sulfoxide and in the Gas Phase,
Acc. Chem. Res., 1988, 21, 12, 463, https://doi.org/10.1021/ar00156a005
. [all data]
Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P.,
Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A),
Can. J. Chem., 1978, 56, 1. [all data]
Wadso, 1965
Wadso, I.,
Thermochemical properties of diacetimide, N-butyldiacetimide and N-phenyldiacetimide,
Acta Chem. Scand., 1965, 19, 1079-1087. [all data]
Wadso, 1962
Wadso, I.,
Heats of aminolysis and hydrolysis of some N-acetyl compounds and of acetic anhydride,
Acta Chem. Scand., 1962, 16, 471-478. [all data]
Bouchoux, 1978
Bouchoux, G.,
Ionisation et fragmentation en spectrometrie de masse VIII. Energies d'activation de deux fragmentations competitives, dissociation de l'acetate de phenyle et de l'acetanilide sous impact electronique,
Int. J. Mass Spectrom. Ion Phys., 1978, 26, 379. [all data]
Baldwin, Loudon, et al., 1976
Baldwin, M.A.; Loudon, A.G.; Maccoll, A.; Webb, K.S.,
The nature and fragmentation pathways of the molecular ions of some arylureas, arylthioureas, acetanilides, thioacetanilides and related compounds,
Org. Mass Spectrom., 1976, 11, 1181. [all data]
Benezra and Bursey, 1971
Benezra, S.A.; Bursey, M.M.,
ortho-Effects on ordering factors in mass spectral rearrangements. Loss of keten from halogenated phenyl acetates and acetanilides,
J. Chem. Soc. B, 1971, 1515. [all data]
Cotter, 1964
Cotter, J.L.,
Electron impact fragmentation patterns of acetanilide and benzamide,
J. Chem. Soc., 1964, 5477. [all data]
Nakagaki, Kobayashi, et al., 1980
Nakagaki, R.; Kobayashi, T.; Nagakura, S.,
Conformations of acetanilide and related compounds studied by ultraviolet photoelectron spectroscopy,
Bull. Chem. Soc. Jpn., 1980, 53, 901. [all data]
Szepes, Distefano, et al., 1974
Szepes, L.; Distefano, G.; Pignataro, S.,
Steric inhibition of resonance in acetanilides by UV photoelectron spectroscopy,
Ann. Chim., 1974, 64, 159. [all data]
Johnson, 1966
Johnson, E.A.,
UV atlas of organic compaunds, 1966, 2, D6/5. [all data]
Zenkevich and Chupalov, 1996
Zenkevich, I.G.; Chupalov, A.A.,
New Possibilities of Chromato Mass Pectrometric Identification of Organic Compounds Using Increments of Gas Chromatographic Retention Indices of Molecular Structural Fragments,
Zh. Org. Khim. (Rus.), 1996, 32, 5, 656-666. [all data]
Schutz and Wollrab A., 1988
Schutz, H.; Wollrab A.,
The significance of the retention index in toxicologic analysis II,
Pharmazie in unzerer Zeit, 1988, 17, 4, 97-101. [all data]
Ardrey and Moffat, 1981
Ardrey, R.E.; Moffat, A.C.,
Gas-liquid chromatographic retention indices of 1318 substances of toxicological interest on SE-30 or OV-1 stationary phase,
J. Chromatogr., 1981, 220, 3, 195-252, https://doi.org/10.1016/S0021-9673(00)81925-1
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, NIST Subscription Links, References
- Symbols used in this document:
AE Appearance energy Cp,solid Constant pressure heat capacity of solid Tboil Boiling point Tfus Fusion (melting) point Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization - 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.