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Ammonium sulfide

Ammonium sulfide
Ammonium sulfide structure
Chemical Name:
Ammonium sulfide
NH4HS;FEMA 2053;Ammoniumsulfid;AMMONIUM SULFIDE;AMMONIUM SULPHIDE;diammoniumsulfide;trueammoniumsulfide;ammoniummonosulfide;Ammonium bisulfide ;Ammonium sulfide sol
Molecular Formula:
Formula Weight:
MOL File:

Ammonium sulfide Properties

Melting point:
decomposes [HAW93]
Boiling point:
40 °C
1 g/mL at 25 °C
refractive index 
n20/D 1.467
Flash point:
90 °F
Specific Gravity
Yellow to orange
Water Solubility 
Miscible with water, alcohol and liquid ammonia.
Stable. Pure material is highly flammable - note wide explosion limits. Incompatible with strong oxidizing agents, strong acids, copper, brass, bronze, strong bases, zinc, aluminium.
CAS DataBase Reference
12135-76-1(CAS DataBase Reference)
EPA Substance Registry System
Ammonium sulfide ((NH4)2S)(12135-76-1)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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  -
HazardClass  8
PackingGroup  II
HS Code  28309090
Hazardous Substances Data 12135-76-1(Hazardous Substances Data)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
H401 Toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 2 P273, P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P403+P235 Store in a well-ventilated place. Keep cool.

Ammonium sulfide price More Price(17)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 515809 Ammonium sulfide solution 40-48 wt. % in H2O 12135-76-1 100ml $91.5 2018-11-13 Buy
Sigma-Aldrich 515809 Ammonium sulfide solution 40-48 wt. % in H2O 12135-76-1 4x100ml $310 2018-11-13 Buy
Alfa Aesar 033286 Ammonium sulfide, 20-24% aq. soln. 12135-76-1 500ml $95.7 2018-11-16 Buy
Alfa Aesar 033286 Ammonium sulfide, 20-24% aq. soln. 12135-76-1 100ml $58.5 2018-11-16 Buy
Strem Chemicals 02-0950 Ammonium sulfide, 40-44% aqueous solution 12135-76-1 100g $44 2018-11-13 Buy

Ammonium sulfide Chemical Properties,Uses,Production

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.


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.


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


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 Preparation Products And Raw materials

Raw materials

Preparation Products

Ammonium sulfide Suppliers

Global( 100)Suppliers
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Mainchem Co., Ltd.
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Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30167 84
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44044 61

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