View source for Ammonia (data page)



<!-- To obtain a blank version of this page, type {{chembox supplement}} and save the page -->

This page provides supplementary chemical data on [[ammonia]].

== Structure and properties == <!-- KEEP this header, it is linked to from the infobox on the main article page -->

{| border="1" cellspacing="0" cellpadding="3" style="margin: 0 0 0 0.5em; background: #FFFFFF; border-collapse: collapse; border-color: #C0C090;"
|-
! {{chembox header}} | Molecular structure
|-
| [[Point group]]
| C<sub>3v</sub>
|-
| [[Bond length]]
| 101.7 [[picometre|pm]] (N&ndash;H)
|- 
| [[Bond angle]]
| 107.8° (H&ndash;N&ndash;H)
|- 
| [[Bond strength (chemistry)|Bond strength]]
| 435 kJ/mol (H&ndash;NH<sub>2</sub>)
|-
! {{chembox header}} | Crystal data
|-
| [[Crystal structure]] <!-- omit if not a solid -->
| ? <!-- e.g. [[triclinic]], [[monoclinic]], [[orthorhombic]], [[hexagonal]], [[rhombohedral|trigonal]], [[tetragonal]], [[cubic]], and mention "close packed" or similar.  You may also cite what class it belongs to, e.g. [[Cadmium chloride#Crystal structure|CdCl<sub>2</sub>]]  -->
|-
! {{chembox header}} | Properties
|-
| [[Dipole#Molecular dipoles|Dipole moment]]
| 1.46 [[Debye|D]]
|- 
| [[Dielectric constant]]
| 22 ε<sub><small>0</small></sub> at 239 K 
|- 
| [[Magnetic susceptibility]]
| diamagnetic
|-
| [[Acid dissociation constant|Acidity of NH<sub>4</sub><sup>+</sup>]] ([[Acid dissociation constant|p''K''<sub>a</sub>]]) 
| 9.25
|}

== Thermodynamic properties == <!-- KEEP this header, it is linked to from the infobox on the main article page -->

{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: #FFFFFF; border-collapse: collapse; border-color: #C0C090;"
! {{chembox header}} | Phase behavior
|-
| [[Triple point]]
| 195.4 K (–77.75 °C), 6.060 k[[Pascal (unit)|Pa]]
|-
| [[Critical point]]
| 405.5 K (132.3 °C), 11.300 M[[Pascal (unit)|Pa]]
|-
| [[Standard enthalpy change of fusion|Std enthalpy change<br/>of fusion]], Δ<sub>fus</sub>''H''<sup><s>o</s></sup>
| +5.653 kJ/mol
|-
| [[Standard entropy change of fusion|Std entropy change<br/>of fusion]], Δ<sub>fus</sub>''S''<sup><s>o</s></sup>
| +28.93 J/(mol·K)
|-
| [[Standard enthalpy change of vaporization|Std enthalpy change<br/>of vaporization]], Δ<sub>vap</sub>''H''<sup><s>o</s></sup>
| +23.35 kJ/mol at [[boiling point|BP]] of –33.4 °C
|-
| [[Standard entropy change of vaporization|Std entropy change<br/>of vaporization]], Δ<sub>vap</sub>''S''<sup><s>o</s></sup>
| +97.41 J/(mol·K) at [[boiling point|BP]] of –33.4 °C
|-
! {{chembox header}} | Solid properties
|-
| [[Standard enthalpy change of formation|Std enthalpy change<br/>of formation]], Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>solid</sub>
| ? kJ/mol
|-
| [[Standard molar entropy]],<br/>''S''<sup><s>o</s></sup><sub>solid</sub>
| ? J/(mol K)
|-
| [[Heat capacity]], ''c<sub>p</sub>''
| ? J/(mol K)
|-
! {{chembox header}} | Liquid properties
|-
| [[Standard enthalpy change of formation|Std enthalpy change<br/>of formation]], Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>liquid</sub>
| ? kJ/mol
|-
| [[Standard molar entropy]],<br/>''S''<sup><s>o</s></sup><sub>liquid</sub>
| ? J/(mol K)
|-
| [[Heat capacity]], ''c<sub>p</sub>''
| 80.80 J/(mol K)
|-
! {{chembox header}} | Gas properties
|-
| [[Standard enthalpy change of formation|Std enthalpy change<br/>of formation]], Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>gas</sub>
| &minus;45.92 kJ/mol
|-
| [[Standard molar entropy]],<br/>''S''<sup><s>o</s></sup><sub>gas</sub>
| 192.77 J/(mol K)
|-
| [[Heat capacity]], ''c<sub>p</sub>''
| 35.06 J/(mol K)
|-
| [[Heat capacity ratio]], ''&gamma;''<br>at 15°C
| 1.310
|-
| [[Van der Waals equation|van der Waals' constants]]
| a = 422.5 liter<sup>2</sup> k[[Pascal (unit)|Pa]] / mole<sup>2</sup><br> b = 0.03707 liter / mole
|-
|}

== Vapor-Liquid Equilibrium Data ==

{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: white; border-collapse: collapse; border-color: #C0C090;"
|-
| {{chembox header}} | '''P in mm Hg''' || 1 || 10 || 40 || 100 || 400 || 760 || 1520 || 3800 || 7600 || 15600 || 30400 || 45600
|-
| {{chembox header}} | '''T in °C''' || –109.1<sub>(s)</sub> || –91.9<sub>(s)</sub> || –79.2<sub>(s)</sub> || –68.4 || –45.4 || –33.6 || –18.7 || 4.7 || 25.7 || 50.1 || 78.9 || 98.3
|}
Table data (above) obtained from ''CRC Handbook of Chemistry and Physics'' 44th ed. The (s) notation indicates equilibrium temperature of vapor over solid. Otherwise temperature is equilibrium of vapor over liquid.<br>

[[Image:LogAmmoniaVaporPressure.png|thumb|666px|left|'''log<sub>10</sub> of anydrous Ammonia vapor pressure.''' Uses formula shown below.]]<br clear="all">
Vapor pressure formula for ammonia:<ref>Lange's Handbook of Chemistry, 10th ed. page 1436</ref>

:::log<sub>10</sub>(P) = A &nbsp;&nbsp;–&nbsp;&nbsp; B / (T – C)

where ''P'' is pressure in k[[pascal (unit)|Pa]] and ''T'' is temperature in [[kelvin]]s

:::A = 6.67956; B = 1002.711; C = 25.215 &nbsp; for T = 190 K through 333 K

::&nbsp;

{| border="0" cellpadding="0" cellspacing="0"
|-----
| valign="top" width="60%" |
{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: {{{bgc|white}}}; border-collapse: collapse; border-color: {{{bc|#C0C090}}};"
! {{chembox header}} colspan="5" | Vapor over Anhydrous Ammonia<ref>Lange's Handbook of Chemistry, 10th ed. page 1451 and 1468</ref>
|-
| bgcolor="E0E0E0" align="center" | Temp.
| bgcolor="E0E0E0" align="center" | Pressure
| bgcolor="E0E0E0" align="center" | ''&rho;'' of liquid
| bgcolor="E0E0E0" align="center" | ''&rho;'' of vapor
| bgcolor="E0E0E0" align="center" | ''&Delta;''<sub>vap</sub>''H''
|-
| –78 °C || 5.90 k[[Pascal (unit)|Pa]]
| || 
|-
| –75 °C || 7.93 kPa
| 0.73094 g/cm<sup>3</sup>
| 7.8241&times;10<sup>–5</sup> g/cm<sup>3</sup>
|
|-
| –70 °C || 10.92 kPa
| 0.72527 g/cm<sup>3</sup>
| 1.1141&times;10<sup>–4</sup> g/cm<sup>3</sup>
|
|-
| –65 °C || 15.61 kPa
| 0.71953 g/cm<sup>3</sup>
| 1.5552&times;10<sup>–4</sup> g/cm<sup>3</sup>
|
|-
| –60 °C || 21.90 kPa
| 0.71378 g/cm<sup>3</sup>
| 2.1321&times;10<sup>–4</sup> g/cm<sup>3</sup>
|
|-
| –55 °C || 30.16 kPa
| 0.70791 g/cm<sup>3</sup>
| 2.8596&times;10<sup>–4</sup> g/cm<sup>3</sup>
|
|-
| –50 °C || 40.87 kPa
| 0.70200 g/cm<sup>3</sup>
| 3.8158&times;10<sup>–4</sup> g/cm<sup>3</sup>
| 1417 J/g
|-
| –45 °C || 54.54 kPa
| 0.69604 g/cm<sup>3</sup>
| 4.9940&times;10<sup>–4</sup> g/cm<sup>3</sup>
| 1404 J/g
|-
| –40 °C || 71.77 kPa
| 0.68999 g/cm<sup>3</sup>
| 6.4508&times;10<sup>–4</sup> g/cm<sup>3</sup>
| 1390 J/g
|-
| –35 °C || 93.19 kPa
| 0.68385 g/cm<sup>3</sup>
| 8.2318&times;10<sup>–4</sup> g/cm<sup>3</sup>
| 1375 J/g
|-
| –30 °C || 119.6 kPa
| 0.67764 g/cm<sup>3</sup>
| 1.0386&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1361 J/g
|-
| –25 °C || 151.6 kPa
| 0.67137 g/cm<sup>3</sup>
| 1.2969&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1345 J/g
|-
| –20 °C || 190.2 kPa
| 0.66503 g/cm<sup>3</sup>
| 1.6039&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1330 J/g
|-
| –15 °C || 236.3 kPa
| 0.65854 g/cm<sup>3</sup>
| 1.9659&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1314 J/g
|-
| –10 °C || 290.8 kPa
| 0.65198 g/cm<sup>3</sup>
| 2.3874&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1297 J/g
|-
| –5 °C || 354.8 kPa
| 0.64533 g/cm<sup>3</sup>
| 2.8827&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1280 J/g
|-
| &nbsp;0 °C || 429.4 kPa
| 0.63857 g/cm<sup>3</sup>
| 3.4528&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1263 J/g
|-
| &nbsp;5 °C || 515.7 kPa
| 0.63167 g/cm<sup>3</sup>
| 4.1086&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1245 J/g
|-
| &nbsp;10 °C || 614.9 kPa
| 0.62469 g/cm<sup>3</sup>
| 4.8593&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1226 J/g
|-
| &nbsp;15 °C || 728.3 kPa
| 0.61755 g/cm<sup>3</sup>
| 5.7153&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1207 J/g
|-
| &nbsp;20 °C || 857.1 kPa
| 0.61028 g/cm<sup>3</sup>
| 6.6876&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1187 J/g
|-
| &nbsp;25 °C || 1003 kPa
| 0.60285 g/cm<sup>3</sup>
| 7.7882&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1167 J/g
|-
| &nbsp;30 °C || 1166 kPa
| 0.59524 g/cm<sup>3</sup>
| 9.0310&times;10<sup>–3</sup> g/cm<sup>3</sup>
| 1146 J/g
|-
| &nbsp;35 °C || 1350 kPa
| 0.58816 g/cm<sup>3</sup>
| 1.0431&times;10<sup>–2</sup> g/cm<sup>3</sup>
| 1124 J/g
|-
| &nbsp;40 °C || 1554 kPa
| 0.57948 g/cm<sup>3</sup>
| 1.2006&times;10<sup>–2</sup> g/cm<sup>3</sup>
| 1101 J/g
|-
| &nbsp;45 °C || 1781 kPa
| 0.57130 g/cm<sup>3</sup>
| 1.3775&times;10<sup>–2</sup> g/cm<sup>3</sup>
| 1083 J/g
|-
| &nbsp;50 °C || 2032 kPa
| 0.56287 g/cm<sup>3</sup>
| 1.5761&times;10<sup>–2</sup> g/cm<sup>3</sup>
| 1052 J/g
|-
| &nbsp;55 °C || 2310 kPa
| 0.55420 g/cm<sup>3</sup> ||
 ||
|-
| &nbsp;60 °C || 2613 kPa
| 0.54523 g/cm<sup>3</sup>
| 2.05&times;10<sup>–2</sup> g/cm<sup>3</sup>
|
|-
| &nbsp;65 °C || 2947 kPa
| 0.53596 g/cm<sup>3</sup> ||
 ||
|-
| &nbsp;70 °C || 3312 kPa
| 0.52632 g/cm<sup>3</sup>
| 2.65&times;10<sup>–2</sup> g/cm<sup>3</sup>
|
|-
| &nbsp;75 °C || 3711 kPa
| 0.51626 g/cm<sup>3</sup> ||
 ||
|-
| &nbsp;80 °C || 4144 kPa
| 0.50571 g/cm<sup>3</sup>
| 3.41&times;10<sup>–2</sup> g/cm<sup>3</sup>
|
|-
| &nbsp;85 °C || 4614 kPa
| 0.49463 g/cm<sup>3</sup> ||
 ||
|-
| &nbsp;90 °C || 5123 kPa
| 0.48290 g/cm<sup>3</sup>
| 4.39&times;10<sup>–2</sup> g/cm<sup>3</sup>
|
|-
| &nbsp;95 °C || 5672 kPa
| 0.47041 g/cm<sup>3</sup> ||
 ||
|-
| 100 °C || 6264 kPa
| 0.45693 g/cm<sup>3</sup>
| 5.68&times;10<sup>–2</sup> g/cm<sup>3</sup>
|
|-
|-
| bgcolor="E0E0E0" align="center" | Temp.
| bgcolor="E0E0E0" align="center" | Pressure
| bgcolor="E0E0E0" align="center" | ''&rho;'' of liquid
| bgcolor="E0E0E0" align="center" | ''&rho;'' of vapor
| bgcolor="E0E0E0" align="center" | ''&Delta;''<sub>vap</sub>''H''
|-
| colspan="5" | The table above gives properties of the [[vapor-liquid equilibrium]] of anhydrous ammonia at various temperatures. The second column is vapor pressure in k[[Pascal (unit)|Pa]]. The third column is the density of the liquid phase. The fourth column is the density of the vapor. The fifth column is the heat of vaporization needed to convert one gram of liquid to vapor.
|}<br clear="left">
| width="4%" |  &nbsp; || valign="top" width="36%" | 
{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: {{{bgc|white}}}; border-collapse: collapse; border-color: {{{bc|#C0C090}}};"
! {{chembox header}} colspan="4" | Vapor over Aqueous Ammonia Solution<ref>Perman, ''Jour. Chem. Soc. 83 1168 (1903)</ref>
|-
| bgcolor="E0E0E0" align="center" | Temp.
| bgcolor="E0E0E0" align="center" | %wt NH<sub>3</sub>
| bgcolor="E0E0E0" align="center" | Partial Pressure<br>NH<sub>3</sub>
| bgcolor="E0E0E0" align="center" | Partial Pressure<br>H<sub>2</sub>O
|-
| rowspan="5" | 0 °C || 4.72 || 1.52 k[[Pascal (unit)|Pa]]
| 0.68 k[[Pascal (unit)|Pa]]
|-
| 9.15 || 3.31 k[[Pascal (unit)|Pa]] || 0.71 k[[Pascal (unit)|Pa]]
|-
| 14.73 || 6.84 k[[Pascal (unit)|Pa]] || 0.55 k[[Pascal (unit)|Pa]]
|-
| 19.62 || 11.0 k[[Pascal (unit)|Pa]] || 0.40 k[[Pascal (unit)|Pa]]
|-
| 22.90 || 14.9 k[[Pascal (unit)|Pa]] || 0.37 k[[Pascal (unit)|Pa]]
|-
| rowspan="6" | 10 °C || 4.16 || 2.20 k[[Pascal (unit)|Pa]]
| 1.21 k[[Pascal (unit)|Pa]]
|-
| 8.26 || 4.96 k[[Pascal (unit)|Pa]] || 1.17 k[[Pascal (unit)|Pa]]
|-
| 12.32 || 8.56 k[[Pascal (unit)|Pa]] || 1.01 k[[Pascal (unit)|Pa]]
|-
| 15.88 || 12.68 k[[Pascal (unit)|Pa]]
| 0.93 k[[Pascal (unit)|Pa]]
|-
| 20.54 || 19.89 k[[Pascal (unit)|Pa]]
| 0.83 k[[Pascal (unit)|Pa]]
|-
| 21.83 || 22.64 k[[Pascal (unit)|Pa]]
| 0.73 k[[Pascal (unit)|Pa]]
|-
| rowspan="9" | 19.9 °C || 4.18 || 3.65 k[[Pascal (unit)|Pa]]
| 2.19 k[[Pascal (unit)|Pa]]
|-
| 6.50 || 6.11 k[[Pascal (unit)|Pa]] || 2.15 k[[Pascal (unit)|Pa]]
|-
| 6.55 || 6.13 k[[Pascal (unit)|Pa]] || 2.13 k[[Pascal (unit)|Pa]]
|-
| 7.72 || 7.49 k[[Pascal (unit)|Pa]] || 2.08 k[[Pascal (unit)|Pa]]
|-
| 10.15 || 10.75 k[[Pascal (unit)|Pa]]
| 2.01 k[[Pascal (unit)|Pa]]
|-
| 10.75 || 11.51 k[[Pascal (unit)|Pa]]
| 1.96 k[[Pascal (unit)|Pa]]
|-
| 16.64 || 22.14 k[[Pascal (unit)|Pa]]
| 1.72 k[[Pascal (unit)|Pa]]
|-
| 19.40 || 28.74 k[[Pascal (unit)|Pa]]
| 1.64 k[[Pascal (unit)|Pa]]
|-
| 23.37 || 40.32 k[[Pascal (unit)|Pa]]
| 1.37 k[[Pascal (unit)|Pa]]
|-
| rowspan="7" | 30.09 °C || 3.93 || 5.49 k[[Pascal (unit)|Pa]]
| 4.15 k[[Pascal (unit)|Pa]]
|-
| 7.43 || 11.51 k[[Pascal (unit)|Pa]] || 3.89 k[[Pascal (unit)|Pa]]
|-
| 9.75 || 16.00 k[[Pascal (unit)|Pa]] || 3.80 k[[Pascal (unit)|Pa]]
|-
| 12.77 || 23.33 k[[Pascal (unit)|Pa]]
| 3.55 k[[Pascal (unit)|Pa]]
|-
| 17.76 || 38.69 k[[Pascal (unit)|Pa]]
| 3.31 k[[Pascal (unit)|Pa]]
|-
| 17.84 || 38.81 k[[Pascal (unit)|Pa]]
| 3.24 k[[Pascal (unit)|Pa]]
|-
| 21.47 || 53.94 k[[Pascal (unit)|Pa]]
| 2.95 k[[Pascal (unit)|Pa]]
|-
| rowspan="6" | 40 °C || 3.79 || 8.15 k[[Pascal (unit)|Pa]]
| 7.13 k[[Pascal (unit)|Pa]]
|-
| 7.36 || 17.73 k[[Pascal (unit)|Pa]] || 6.76 k[[Pascal (unit)|Pa]]
|-
| 11.06 || 29.13 k[[Pascal (unit)|Pa]]
| 6.55 k[[Pascal (unit)|Pa]]
|-
| 15.55 || 47.14 k[[Pascal (unit)|Pa]]
| 5.52 k[[Pascal (unit)|Pa]]
|-
| 17.33 || 57.02 k[[Pascal (unit)|Pa]]
|
|-
| 20.85 || 76.81 k[[Pascal (unit)|Pa]]
| 5.04 k[[Pascal (unit)|Pa]]
|-
| rowspan="6" | 50 °C || 3.29 || 10.54 k[[Pascal (unit)|Pa]]
| 11.95 k[[Pascal (unit)|Pa]]
|-
| 5.90 || 20.17 k[[Pascal (unit)|Pa]] || 11.61 k[[Pascal (unit)|Pa]]
|-
| 8.91 || 32.88 k[[Pascal (unit)|Pa]] || 11.07 k[[Pascal (unit)|Pa]]
|-
| 11.57 || 45.56 k[[Pascal (unit)|Pa]]
| 10.75 k[[Pascal (unit)|Pa]]
|-
| 14.15 || 60.18 k[[Pascal (unit)|Pa]]
| 10.27 k[[Pascal (unit)|Pa]]
|-
| 14.94 || 64.94 k[[Pascal (unit)|Pa]]
| 10.03 k[[Pascal (unit)|Pa]]
|-
| rowspan="5" | 60 °C || 3.86 || 18.25 k[[Pascal (unit)|Pa]]
| 19.21 k[[Pascal (unit)|Pa]]
|-
| 5.77 || 28.78 k[[Pascal (unit)|Pa]] ||
|-
| 7.78 || 40.05 k[[Pascal (unit)|Pa]] || 18.47 k[[Pascal (unit)|Pa]]
|-
| 9.37 || 50.09 k[[Pascal (unit)|Pa]] || 18.07 k[[Pascal (unit)|Pa]]
|-
| 9.37 || 63.43 k[[Pascal (unit)|Pa]] || 17.39 k[[Pascal (unit)|Pa]]
|-
| bgcolor="E0E0E0" align="center" | Temp.
| bgcolor="E0E0E0" align="center" | %wt NH<sub>3</sub>
| bgcolor="E0E0E0" align="center" | Partial Pressure<br>NH<sub>3</sub>
| bgcolor="E0E0E0" align="center" | Partial Pressure<br>H<sub>2</sub>O
|-
|}<br clear="left">
|}

==Heat capacity of liquid and vapor==

{|
|- valign="top"
| [[Image:AmmoniaGasHeatCapacity.png|thumb|625px|left|'''Heat capacity of anhydrous ammonia gas.''' Uses polynomial <!-- <math>\scriptstyle c_p (kJ/mol K) = </math><math>\scriptstyle 34.23600 - 0.02214127(T+273.15) + 1.212511 \times 10^{-4}(T+273.15)^2 - 1.088291 \times 10^{07}(T+273.15)^3 + 3.203149 \times 10^{-11}(T+273.15</math> --> obtained from CHERIC.<ref name="cheric_p">{{cite web|url=http://www.cheric.org/research/kdb/hcprop/cmpsrch.php|title=Pure Components Properties|publisher=Chemical Engineering Research Information Center|accessdaymonth=1 June|accessyear=2007|format=Queriable database}}</ref>]]
|-
| [[Image:AmmoniaLiquidHeatCapacity.png|thumb|300px|left|'''Heat capacity of anhydrous liquid ammonia.''' Uses polynomial obtained from CHERIC.<ref name="cheric_p"/>]]
|-
|}

== Spectral data == <!-- KEEP this header, it is linked to from the infobox on the main article page -->

{| border="1" cellspacing="0" cellpadding="3" style="margin: 0 0 0 0.5em; background: #FFFFFF; border-collapse: collapse; border-color: #C0C090;"
! {{chembox header}} | [[UV/VIS spectroscopy|UV-Vis]]
|-
| [[Lambda-max|λ<sub>max</sub>]]
| None [[Nanometre|nm]]
|-
| [[Extinction coefficient]], ε
| None 
|-
! {{chembox header}} | [[Infrared|IR]]
|-
| Major absorption bands
| 3444, 3337, 1627, 950 [[Wavenumber|cm]]<sup>&minus;1</sup>
|-
! {{chembox header}} | [[NMR Spectroscopy|NMR]]
|-
| [[Proton NMR]] <!-- Link to image of spectrum -->
| &nbsp;
|-
| [[Carbon-13 NMR]] <!-- Link to image of spectrum -->
| &nbsp;None - no carbons
|-
| Other NMR data <!-- Insert special data e.g. <sup>19</sup>F chem. shifts, omit if not used -->
| &nbsp;
|-
! {{chembox header}} | [[Mass Spectrometry|MS]]
|-
| Masses of <br>main fragments
| 17 (100%)<br/>16(80%)<br/>15(9%)
|-
|}

== Regulatory data ==

{| border="1" cellspacing="0" cellpadding="3" style="margin: 0 0 0 0.5em; background: #FFFFFF; border-collapse: collapse; border-color: #C0C090;"
! {{chembox header}} | Regulatory data
|-
| [[EINECS number]]
| 231-635-3 (''gas'')<br/>215-647-6 (''soln.'')
|-
| EU index number
| 007-001-00-5 (''gas'')<br/>007-001-01-2 (''soln.'')
|-
| [[Permissible Exposure Limit|PEL-TWA]] ([[OSHA]])
| 50 ppm (35 mg/m<sup>3</sup>)
|-
| [[IDLH]] ([[NIOSH]])
| 300 ppm
|-
| [[Flash point]]
| 11 °C
|-
| [[Autoignition temperature]]
| 651 °C
|-
| [[Explosive limits]]
| 15&ndash;28%
|-
| [[RTECS]] number
| BO0875000
|-
|}

== Material Safety Data Sheet == <!-- KEEP this header, it is linked to from the infobox on the main article page -->

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet ([[Material safety data sheet|MSDS]]) for this chemical from a reliable source  such as [http://www2.siri.org/msds/index.php SIRI], and follow its directions.

== References ==
*{{nist}}
<references/>

Except where noted otherwise, data relate to [[standard ambient temperature and pressure]].

[[wikipedia:Chemical infobox|Disclaimer]] applies.

== External links ==
*[http://webbook.nist.gov/cgi/cbook.cgi?ID=C7664417&Units=SI&Type=IR-SPEC&Index=1#IR-SPEC IR spectrum] (from [[NIST]])

[[Category:Chemical data pages]]
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