Ammonia: Difference between revisions

Revision as of 09:49, 22 September 2004

Revision as of 01:44, 26 September 2004

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| align="center" colspan="2" | [[Image:{{PAGENAME}}.png|200px|{{PAGENAME}}]] <br/> ''{{PAGENAME}}''

|- style="border-top: 3px solid gray"

! bgcolor="#fdayellow" colspan="2" | General

|-

| bgcolor="#fedyellow" | [[Chemical formula]]

| {{nitrogen}}{{hydrogen}}{{sub|3}}

|-

| bgcolor="#fedyellow" | [[Molecular weight]]

| 17.03 [[atomic mass unit|amu]]

|-

| bgcolor="#fedyellow" | Appearance

| colorless gas

|-

| bgcolor="#fedyellow" | [[CAS number]]

| 7664-41-7

|-

| bgcolor="#fedyellow" | [[MSDS]]

| [[Wikisource:{{PAGENAME}} MSDS|{{PAGENAME}} MSDS]]

|-

! bgcolor="#fedyellow" colspan="2" | Other names

|-

| colspan="2" |

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* '''Vaporole'''

|-

! bgcolor="#fdayellow" colspan="2" | Physical properties

|-

| bgcolor="#fedyellow" | [[Density]] and [[phase (matter)|phase]] at [[standard temperature and pressure|STP]]

| ? [[gram|g]]/[[centimeter|cm]]³ (gas)

|-

| bgcolor="#fedyellow" | [[Solubility]]

| [[miscible]] with [[water]]

|-

| bgcolor="#fedyellow" | [[Specific gravity]]

| 0.63

|-

| bgcolor="#fedyellow" | [[Crystal structure]]

| ?

|-

| bgcolor="#fedyellow" | [[pH]] (10% solution in water)<br/>(pKa)

| 12

|-

| bgcolor="#fedyellow" | Thermal decomposition

| ? K (? °C)

|-

! bgcolor="#fdayellow" colspan="2" | Phase behavior

|-

| bgcolor="#fedyellow" | [[Melting point]]

| 195 [[kelvin|K]] (-78 °[[Celsius|C]])

|-

| bgcolor="#fedyellow" | [[Boiling point]]

| 240 K (-33 °C)

|-

| bgcolor="#fedyellow" | [[Triple point]]

| ? K (? °C) <br/> ? [[bar (unit)|bar]]

|-

| bgcolor="#fedffff" | [[Critical point]]

| ? K (? °C) <br/> ? bar

|-

| bgcolor="#fedyellow" | [[Heat of fusion]]<br/>(&Delta;_fusH)

| ? [[kilojoule|kJ]]/[[mole (unit)|mol]]

|-

| bgcolor="#fedyellow" | [[Entropy of fusion]]<br/>(&Delta;_fusS)

| ? [[joule|J]]/mol·K

|-

| bgcolor="#fedyellow" | [[Heat of vaporization]]<br/>(&Delta;_vapH)

| ? kJ/mol

|-

! bgcolor="#fdared" colspan="2" | Safety

|-

| bgcolor="#fedyellow" | Ingestion

| Dangerous. Symptoms include nausea and vomiting; damage to lips, mouth, and esophagus.

|-

| bgcolor="#fedyellow" | Inhalation

| Vapours are extremely irritating and corrosive.

|-

| bgcolor="#fedyellow" | Skin

| Concentrated solutions may produce severe burns and necrosis.

|-

| bgcolor="#fedyellow" | Eyes

| May cause permanent damage, even in small quantities.

|-

| bgcolor="#fedyellow" | [[Flash point]]

| 11 °C

|-

| bgcolor="#fedyellow" | [[Autoignition temperature]]

| 651.1 °C

|-

| bgcolor="#fedyellow" | [[Explosive limit]]s

| 16 - 25%

|-

| bgcolor="#fedyellow" | [[OSHA]] [[Permissible Exposure Limit]]<br/>(PEL)

| 50 [[parts per million|ppm]]

|-

| bgcolor="#fedyellow" | [[NIOSH]] [[Immediate Danger to Life and Health]]<br/>(IDLH)

| 500 ppm

|-

! bgcolor="#fedyellow" colspan="2" | Precautions

|-

| colspan="2" |

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** [[heavy metals]]

|- style="border-top: 3px solid gray"

! bgcolor="#fdayellow" colspan="2" | [[Solid]] properties

|-

| bgcolor="#fedyellow" | [[Standard enthalpy change of formation]]<br/>(&Delta;_fH⁰_solid)

| ? kJ/mol

|-

| bgcolor="#fedyellow" | [[Heat capacity]]<br/>(C_p)

| ? J/mol·K

|-

| bgcolor="#fedyellow" | Density

| ? g/cm³

|-

! bgcolor="#fdayellow" colspan="2" | [[Liquid]] properties

|-

| bgcolor="#fedyellow" | &Delta;_fH⁰_liquid

| -40.2 kJ/mol

|-

| bgcolor="#fedyellow" | C_p

| ? J/mol·K

|-

| bgcolor="#fedyellow" | Density

| 8.0 g/cm³

|-

! bgcolor="#fdayellow" colspan="2" | [[Gas]] properties

|-

| bgcolor="#fedyellow" | &Delta;_fH⁰_gas

| -45.9 kJ/mol

|-

| bgcolor="#fedyellow" | [[Standard molar entropy]]<br/>(S⁰_gas)

| 192.77 J/mol·K

|-

| bgcolor="#fedyellow" | C_p

| ? J/mol·K

|- style="border-top: 3px solid gray"

| bgcolor="#fdayellow" colspan="2" align="center" |

<small>

'''[[SI]] units and [[standard temperature and pressure|standard conditions]] used unless otherwise stated'''.<br/>