Agent Name

Ammonium sulfide

Alternative Name

Diammonium sulfide

CAS Number




Major Category

Other Classes


Ammonium monosulfide; Ammonium sulfide (solution); Ammonium sulfide, true; True ammonium sulfide; Ammonium sulfide solution; Ammonium sulfide solution (45% or less); [ChemIDplus] UN2683


Sulfur Compounds


Colorless to yellow solid below -18 deg C; Decomposes above this temperature; [HSDB] Available as colorless to yellow solution with an odor of rotten eggs; [CAMEO] 40-44% aqueous solution is yellow liquid with a stench; [Alfa Aesar MSDS]


Used to apply patina to bronze, for iron control in soda ash production, and to make ammonium thiosulfite; Also used in trace metal analysis, photographic developers, metallurgy, textiles, synthetic flavors, and "cold wave sets"; [HSDB] Used to make surfactants and photocopy paper; [EPA OHM/TADS]


A strong skin and mucous membrane irritant; May cause serious eye injury; Inhalation may result in dizziness and bronchial pneumonia (500 ppm for 30 min) and death (600 ppm for 30 min); Skin absorption may result in hydrogen sulfide poisoning; Deaths have been reported following application of permanent wave solution; Emergency treatment: "Corrosives- alkaline"; [HSDB] Readily oxidized to ignite spontaneously in air; Decomposed slowly by moisture evolving the flammable gas hydrogen sulfide; A severe skin irritant; Can cause severe burns to eyes; [CAMEO] Commercially available as 40-44% aqueous solution (known as ammonium hydrosulfide or ammonium sulfhydrate solution); Quickly decomposes evolving ammonia; A skin irritant; [EPA OHM/TADS] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; [Alfa Aesar MSDS]

Exposure Assessment
Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Ammonium sulfide, solution."

Adverse Effects
Toxic Pneumonitis


Other Poison

Chemical Asphyxiant


Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information


Chemical Information

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Related Information in HazMap

Occupational diseases associated with exposure to this agent:


Industrial Processes with risk of exposure:


Activities with risk of exposure: