Ammoniumhydrogencarbonat Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE ODER WEISSE KRISTALLE MIT CHARAKTERISTISCHEM GERUCH.
CHEMISCHE GEFAHREN
Zersetzung beim Erwärmen über 35°C unter Bildung von Ammoniakrauchen. Reagiert sehr heftig mit Säuren. Reagiert mit starken Basen und starken Oxidationsmitteln.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation des Aerosols.
INHALATIONSGEFAHREN
Nur ungenügende Angaben vorhanden über die Geschwindigkeit, mit der eine gesundheitsschädliche Konzentration in der Luft beim Verdampfen bei 20°C erreicht wird.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz reizt die Augenund die Atemwege.
LECKAGE
Verschüttetes Material in abgedeckten Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste mit viel Wasser wegspülen. Persönliche Schutzausrüstung: Kombinationsfilter K und für Partikel.
R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
Chemische Eigenschaften
Ammonium bicarbonate is a white crystalline solid with a faint ammonia odor and soluble in water but insoluble in alcohol and acetone. It decomposes above 35℃ to ammonia, carbon dioxide and water vapor, releasing irritant fumes. Only 30% of the applied nitrogen of this fertilizer is recovered by plants owing to the unstable nature of ammonium bicarbonate. that forms by the reaction of anunonium hydroxide and excess CO2.
Physikalische Eigenschaften
White crystalline solid; prismatic crystal; faint odor of ammonia; stable at ambient temperature but decomposes on heating at 60°C; melts at 107.5°C on very rapid heating; density 1.586 g/cm
3; vapor pressure 435 torr at 25°C; readily dissolves in water (21.6g/100g at 20°C, and 36.6g/100g at 40°C).
Verwenden
Ammonium Bicarbonate is a dough strengthener, a leavening agent, a ph control agent, and a texturizer. prepared by reacting gaseous carbon dioxide with aqueous ammonia. crystals of ammo- nium bicarbonate are precipitated from solution and subsequently washed and dried. Also known as hartshorn and rock ammonia, ammonium bicarbonate is soluble in water but decomposes when heated. It was used in place of ammonia when making ammonia-ripened gelatin emulsions.
Allgemeine Beschreibung
A white crystalline solid having the odor of ammonia. Soluble in water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit spread to the environment. Used to make other ammonium compounds, in food processing, and for other uses.
Air & Water Reaktionen
Soluble in water.
Reaktivität anzeigen
Heat > 36°C ( produces ammonia and carbon dioxide); strong acids and strong bases (CO2 and NH3) [Handling Chemicals Safely 1980 p. 141].
Hazard
Evolves irritating fumes on heating to 35C.
Health Hazard
Inhalation may cause respiratory irritation. Ingestion could be harmful. Contact with eyes or skin causes irritation.
Breathing Ammonium Bicarbonate can irritate the nose, throat, and lungs causing coughing, wheezing, and/or shortness of breath. No risks to humans are expected from approved uses of ammonium bicarbonate as a pesticide active ingredient. The substance is approved as a food additive by the Food and Drug Administration (FDA) and as an inert pesticide ingredient by EPA. No toxic endpoints have been identified.
Landwirtschaftliche Anwendung
Ammonium hydrogen carbonate is another name for ammonium bicarbonate (NH4CO3), It is a low nitrogen containing fertilizer (17% N), used largely in China. It is produced by heating ammonium hydroxide with excess carbon dioxide, followed by evaporation of water.
Sicherheitsprofil
Poison by intravenous route. When heated to decomposition it emits toxic fumes of NO, and NH3
mögliche Exposition
It is used in leavening for some baked
goods; in baking powders and fire extinguishers; to make
dyes and pigments; in the manufacture of porous plastics;
and as an expectorant.
Versand/Shipping
UN3077 Environmentally hazardous substances,
solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous
material, Technical Name Required.
Inkompatibilitäten
Contact with strong caustics, such as
potassium hydroxide or sodium hydroxide will cause the
release of ammonia gas. Decomposes as temperature rises
＞35 C.
Waste disposal
May be buried in a chemical
waste landfill. If neutralized ammonium bicarbonate is
amenable to treatment at a municipal sewage treatment
plant.
Ammoniumhydrogencarbonat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
