Diammoniumcarbonat Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R22:Gesundheitssch?dlich beim Verschlucken.
S-S?tze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
Anunonium carbonate is a white water-soluble, volatile solid prepared by reaction of NH4OH and CO2 and crystallizing from dilute alcohol. Ammonium carbonate loses NH3,CO2, and H20 at ordinary temperatures, and rapidly at 58°C.
Physikalische Eigenschaften
Colorless or translucent hard crystalline mass or white cubic crystals or powder; sharp taste; odor of ammonia; decomposes at 58°C; slow decomposition at ambient temperatures; readily dissolves in cold water; decomposes in hot water; insoluble in liquid ammonia, alcohol and carbon disulfide.
Verwenden
Ammonium Carbonate is a dough strengthener, a leavening agent,
a ph control agent, and a texturizer. it is prepared by the sublima-
tion of a mixture of ammonium sulfate and calcium carbonate, and
occurs as a white powder or a hard, white translucent mass.
synthetische
Ammonium carbonate is obtained by passing carbon dioxide into aqueous ammonia solution in a column or tower. Ammonia, carbon dioxide and water vapor are distilled and the vapors condensed into a solid crystalline mass. It also may be prepared by subliming a mixture of ammonium sulfate and calcium carbonate.
Definition
ammonium carbonate: A colourlessor white crystalline solid,(NH
4)
2CO
3, usually encountered asthe monohydrate. It is very soluble incold water. The compound decomposesslowly to give ammonia, water,and carbon dioxide. Commercial ‘a(chǎn)mmoniumcarbonate’ is a double saltof ammonium hydrogencarbonateand ammonium aminomethanoate(carbamate), NH
4HCO
3.NH
2COONH
4.This material is manufactured byheating a mixture of ammoniumchloride and calcium carbonate andrecovering the product as a sublimedsolid. It readily releases ammoniaand is the basis of sal volatile. It isalso used in dyeing and wool preparationand in baking powders.
Allgemeine Beschreibung
A colorless crystalline solid or a white powder with a strong odor of ammonia. Noncombustible. 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 pharmaceuticals, in food processing.
Air & Water Reaktionen
Water soluble.
Reaktivit?t anzeigen
Ammonium carbonate decomposes when heated to give gaseous ammonia and gaseous carbon dioxide. Reaction is non-explosvie. Causes decomposition of sodium hypochlorite within a few seconds [Mellor 2 Supp. 1:550 1956].
Hazard
Evolves irritating fumes when heated.
Health Hazard
Inhalation causes irritation of nose and throat. Ingestion may cause gastric irritation. Contact with eyes or skin causes irritation.
Landwirtschaftliche Anwendung
Ammonium carbonate, (NH
4)
2CO
3, is an intermediate product formed during the synthesis of urea. Ammonium carbonate on decomposition yields urea and water.
Sicherheitsprofil
Poison by subcutaneous and intravenous routes. When heated to decomposition it emits toxic fumes of NO, and NH3.
m?gliche Exposition
It is used in dyeing, tanning, medicines,
fire extinguishers; to make casein glue; ammonia
salts; and baking powders. A laboratory reagent.
Versand/Shipping
UN3077 Environmentally hazardous substances,
solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous
material, Technical Name Required.
Inkompatibilit?ten
Acids, acid salts; salts of iron and zinc,
alkaloids, calomel and tartar emetic. Keep cool, below
38 C.
Contact with inorganic acids may form CO2, heat, and dangerous
spattering.
Waste disposal
Slowly deposit in a large container
of water. Add excess amounts of soda ash and let
stand for 24 hours. Decant to another container, neutralize
with hydrochloric acid, and drain with an excess of water.
Ship to landfill.
Diammoniumcarbonat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
5-Ethyl-3-methyl-5-phenyl-2,4-imidazolidindion
Strontiumcarbonat
5-Amino-1,2,3,4-tetrahydrophtha-lazin-1,4-dion
2,5-Dimethyl-1H-pyrrol
Bariumcarbonat
Diammoniumtartrat
4-Bromobenzenesulfonamide
L-Valin
Acetamid
4-AMINO-5-BROMO-2-METHYLPYRIDINE
4-SULFAMOYLPHENYLBORONIC ACID, PINACOL ESTER
Sulfamins?ure, Monoammonium-Salz
medium temperature Shift catalysts
5,5-Dimethylhydantoin
Glycin
[1-Ethyl-1-phenyl-2-(3,4,5-trimethoxybenzoyloxy)ethyl]dimethylammoniumhydrogenmaleat
N-Nitroso-N-phenylhydroxylamin,Ammoniumsalz
Ammonium-L-glutamat
Benzamid
Caramel (Farbe)
medium(high)temperature Shift catalysts
Chinalphos (ISO)
