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Ammonium sulfide

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Ammonium sulfide Basic information

Product Name:
Ammonium sulfide
CAS:
12135-76-1
MF:
H8N2S
MW:
68.14
EINECS:
235-223-4
Mol File:
12135-76-1.mol
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Ammonium sulfide Chemical Properties

Melting point:
decomposes [HAW93]
Boiling point:
40 °C
Density 
1 g/mL at 25 °C
FEMA 
2053 | AMMONIUM SULFIDE
refractive index 
n20/D 1.467
Flash point:
90 °F
form 
Liquid
pka
3.42±0.70(Predicted)
color 
Yellow to orange
Specific Gravity
1.2
Water Solubility 
Miscible with water, alcohol and liquid ammonia.
Merck 
13,560
Stability:
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 DataBase Reference
12135-76-1(CAS DataBase Reference)
EPA Substance Registry System
Ammonium sulfide (12135-76-1)
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Safety Information

Hazard Codes 
C,N,F
Risk Statements 
11-31-34-50-10
Safety Statements 
26-36/37/39-45-61-16
RIDADR 
UN 2683 8/PG 2
WGK Germany 
-
10-13-23
TSCA 
Yes
HazardClass 
8
PackingGroup 
II
HS Code 
28309090
Hazardous Substances Data
12135-76-1(Hazardous Substances Data)

MSDS

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Ammonium sulfide Usage And Synthesis

Chemical Properties

yellow to orange fuming liquid

Chemical Properties

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.

Chemical Properties

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.

Uses

To apply patina to bronze, in photographic developers, in textile manufacture, in trace metal analysis.

General Description

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 Reactions

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.

Reactivity Profile

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.

Fire Hazard

Special Hazards of Combustion Products: Toxic hydrogen sulfide gas is released when solution is heated. If ignited, this will form irritating sulfur dioxide gas.

Industrial uses

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.

Potential Exposure

It is used in photographic developers, synthetic flavors, coloring metals (i.e., to apply patina to bronze); and to make textiles.

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

Incompatibilities

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.

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Ammonium sulfideSupplierMore

Wuhan Xingzhongcheng Technology Co., Ltd. Gold
Tel:
18627766980
Email:
914018854@qq.com
J & K SCIENTIFIC LTD.
Tel:
010-82848833- ;010-82848833-
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel:
21-61259100-
Email:
sh@meryer.com
Alfa Aesar
Tel:
400-610-6006; 021-67582000
Email:
saleschina@alfa-asia.com
Energy Chemical
Tel:
021-58432009 / 400-005-6266
Email:
info@energy-chemical.com
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