::Hydrogen cyanide


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Hydrogen cyanide
{{#invoke:InfoboxImage|InfoboxImage center=yes image=Hydrogen-cyanide-3D-balls.png size= sizedefault=100px alt= title=Ball and stick model of hydrogen cyanide}} InfoboxImage center=yes image=Hydrogen-cyanide-3D-vdW.png size= sizedefault=100px alt= title=Spacefill model of hydrogen cyanide}}


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|errNS=0}} 3DMet B00275 ChEBI ChemSpider EC number 200-821-6 KEGG MeSH Hydrogen+Cyanide {{safesubst:#invoke:collapsible list|main}} UNII UN number 1051 colspan=2 style="background:#f8eaba; text-align:center;" Hazards{{#invoke:TemplatePar check template=Template:Chembox Hazards opt=

ExternalMSDS= ExternalSDS= GHSPictograms= GHSSignalWord= Hazards_data_page= HPhrases= PPhrases= EUClass= RPhrases= SPhrases= RSPhrases= MainHazards= IngestionHazard= InhalationHazard= EyeHazard= SkinHazard= NFPA-F= NFPA-H= NFPA-R= NFPA-S= NFPA_ref= FlashPt= FlashPtC= FlashPtF= FlashPtK= FlashPt_notes= FlashPt_ref= AutoignitionPt= AutoignitionPtC= AutoignitionPtF= AutoignitionPtK= AutoignitionPt_ref= AutoignitionPt_notes= ExploLimits= TLV= TLV-TWA= TLV-STEL= TLV-C= LD50= LDLo= LC50= LCLo= PEL= REL= IDLH= NIOSH_id= NIOSH_ref= NFPA-O

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|errNS=0}} colspan=2 style="text-align:left; background-color:#f1f1f1;" Lethal dose or concentration (LD, LC): - - style="background:#f1f1f1;" style="padding-left:1em;"

501 ppm (rat, 5 min)
323 ppm (mouse, 5 min)
275 ppm (rat, 15 min)
170 ppm (rat, 30 min)
160 ppm (rat, 30 min)
323 ppm (rat, 5 min)<ref name=IDLH/>


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200 ppm (mammal, 5 min)
36 ppm (mammal, 2 hr)
107 ppm (human, 10 min)
759 ppm (rabbit, 1 min)
759 ppm (cat, 1 min)
357 ppm (human, 2 min)
179 ppm (human, 1 hr)<ref name=IDLH>{{#invoke:citation/CS1|citation




Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Hydrogen cyanide (HCN), sometimes called prussic acid, is an organic compound<ref name=Ullmann></ref> with the chemical formula HCN. It is a colorless, extremely poisonous liquid that boils slightly above room temperature, at {{safesubst:#invoke:convert|convert}}.<ref></ref> HCN is produced on an industrial scale and is a highly valuable precursor to many chemical compounds ranging from polymers to pharmaceuticals.

Hydrogen cyanide sections
Intro  Structure and general properties  History of discovery  Production and synthesis  Applications  Occurrence  As a poison and chemical weapon  References  External links  

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