Ammoniumsulfid

Bezeichnung:Ammoniumsulfid

CAS-Nr12135-76-1

Englisch Name:Ammonium sulfide

CBNumberCB6151876

SummenformelH8N2S

Molgewicht68.14

MOL-Datei12135-76-1.mol

Synonyma

Ammoniumsulfid

Ammoniumsulfid physikalisch-chemischer Eigenschaften

Schmelzpunkt	decomposes [HAW93]
Siedepunkt	40 °C
Dichte	1 g/mL at 25 °C
Dampfdruck	600 hPa at 20 °C
FEMA	2053 \| AMMONIUM SULFIDE
Brechungsindex	n20/D 1.467
Flammpunkt	90 °F
storage temp.	room temp
Löslichkeit	soluble in H2O, ethanol, alkaline solutions
pka	3.42±0.70(Predicted)
Aggregatzustand	Liquid
Wichte	1.2
Farbe	Yellow to orange
Geruch (Odor)	Ammonia odour
Säure-Base-Indikators(pH-Indikatoren)	9.5 ( 45% aqueous solution)
Explosionsgrenze	4-46%
Geruchsart	sulfurous
Wasserlöslichkeit	Miscible with water, alcohol and liquid ammonia.
Merck	13,560
Stabilität	Stable. Pure material is highly flammable - note wide explosion limits. Incompatible with strong oxidizing agents, strong acids, copper, brass, bronze, strong bases, zinc, aluminium.
InChIKey	UXXGWUQNRMPNKH-UHFFFAOYSA-N
CAS Datenbank	12135-76-1(CAS DataBase Reference)
EPA chemische Informationen	Ammonium sulfide (12135-76-1)

Sicherheit

Kennzeichnung gefährlicher	C,N,F
R-Sätze:	11-31-34-50-10
S-Sätze:	26-36/37/39-45-61-16
RIDADR	UN 2683 8/PG 2
WGK Germany	-
F	10-13-23
TSCA	Yes
HazardClass	8
PackingGroup	II
HS Code	28309090
Giftige Stoffe Daten	12135-76-1(Hazardous Substances Data)

Gefahreninformationscode (GHS)

Ammonium sulfide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R11:Leichtentzündlich.
R31:Entwickelt bei Berührung mit Säure giftige Gase.
R34:Verursacht Verätzungen.
R50:Sehr giftig für Wasserorganismen.
R10:Entzündlich.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Chemische Eigenschaften
yellow to orange fuming liquid
Chemische Eigenschaften
The distinct ammonical/sulfurous odor of ammonium sulfide makes it a valuable flavor ingredient. It is used in baked goods, meat products, condiments and gravies.
Chemische Eigenschaften
Ammonium sulfide is a yellow crystalline (sugar or sand-like) material, commonly found in liquid solution, which is flammable. Solution has an odor of rotten eggs.
Physikalische Eigenschaften
Unstable, decomposes at ambient temperature; forms yellow crystals below -18°C; hygroscopic; soluble in water and alcohol, very soluble in liquid ammonia.
Verwenden
Ammonium sulfide solution is used occasionally in photographic developing, to apply patina to bronze, and in textile manufacturing. Ammonium sulfide is a very useful reagent in mineral analysis. Used in continuous culture of saccharomyces cerevisiae, useful in a double staining technique for visualization of astrocytes and microglia from brain sections and astroglial cell cultures. It plays an important role to modify the surface of low κ dielectric thin films. It is essential for molecular beam epitaxy regrowth. It is an unstable salt and acts as a selective reducing agent.
Verwenden
Ammonium sulfide solution may be used to enhance the performance of type-II InAs/GaSb super lattice photodiodes by surface passivation technique.
Verwenden
To apply patina to bronze, in photographic developers, in textile manufacture, in trace metal analysis.
Allgemeine Beschreibung
Ammonium sulfide aqueous solution is a colorless to yellow liquid, with an odor of rotten eggs or ammonia. Material in aqueous from the hydrosulfide which with acid forms H2S. Ammonium sulfide may be irritating to skin, eyes and mucous membranes and may cause illness from skin absorption. Ammonium sulfide may burn and/or emit toxic fumes if heated to high temperatures.
Air & Water Reaktionen
Readily oxidized to be pyrophoric in air [Bretherick 1979 p. 120]. Ammonium sulfide is slowly decomposed by moisture giving off hydrogen sulfide, a flammable gas. Heat is generated when the pure compound is first dissolved in water.
Reaktivität anzeigen
AMMONIUM SULFIDE SOLUTION is a strongly alkaline aqueous solution. Reacts with acids to generate toxic gaseous hydrogen sulfide. Reacts with bases to release gaseous ammonia. May react vigorously with oxidizing agents, including inorganic oxoacids, organic peroxides and epoxides. Special Hazards of Combustion Products: Toxic hydrogen sulfide gas is released when solution is heated. If ignited, this will form irritating sulfur dioxide gas [USCG, 1999].
Health Hazard
Inhalation of 500 ppm for 30 min. produces headaches, dizziness, bronchial pneumonia; 600 ppm for 30 min. can cause death. Ingestion causes severe irritation of mucous membranes and stomach. Contact with liquid causes severe burns of eyes and severe skin irritation. May be absorbed through skin and cause hydrogen sulfide poisoning.
Brandgefahr
Special Hazards of Combustion Products: Toxic hydrogen sulfide gas is released when solution is heated. If ignited, this will form irritating sulfur dioxide gas.
Industrielle Verwendung
Ammonium sulfide (NH₄)₂S is a liquid with an obnoxious odor and because of this, it is not normally used in mineral processing. However, this is the most effective depressant for bornite and covellite. Essentially, (NH₄)₂S dissolves excess sulfur from the mineral surface, that allows other depressants to adsorb onto the mineral surface. In copper–lead separation, from a bulk concentrate containing covellite and bornite, (NH₄)₂S can effectively be used together with cyanide.
mögliche Exposition
It is used in photographic developers, synthetic flavors, coloring metals (i.e., to apply patina to bronze); and to make textiles.
Versand/Shipping
UN2923 Corrosive solids, toxic, n.o.s., Hazard class: 8; Labels: 8-Corrosive material, 6.1-Poisonous material, Technical Name Required. UN2683 Ammonium sulfide solution, Hazard class: 8; Labels: 8-Corrosive material, 6.1-Poisonous materials, 3-Flammable liquid
Inkompatibilitäten
Vapor form explosive mixture with air Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Evolves poisonous ammonia on contact with strong bases. Contact with acid or acid fumes releases hydrogen sulfide. Keep away from moisture.
Waste disposal
Add to a large volume of ferric chloride solution with stirring. Neutralize with soda ash. Flush to drain with water.

Ammonium sulfide Upstream-Materialien And Downstream Produkte

Ammoniumsulfid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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