암모늄 이황화합물

390.0 [mmHg]

Vapor pressure, kPa at 22 °C: 52

Ammonium hydrosulfide, solution is a clear, yellowish liquid. Kept basic with NaOH, as acid will release hydrogen sulfide gas. Technical grade is 40-44%. Used in photography, textiles, synthetic flavors, coloring brasses, bronzes, and iron control.

White to yellow hygroscopic solid; [ICSC] Decomposes when moisture or >0 deg C; [Hawley] Technical grade is 40-44% and kept basic with sodium hydroxide; [CAMEO] Solution has strong odor of rotten eggs and ammonia; [CHRIS]

HYGROSCOPIC WHITE-TO-YELLOW CRYSTALS WITH CHARACTERISTIC ODOUR.

Danger

H312 (31.3%): Harmful in contact with skin [Warning Acute toxicity, dermal]

P260, P264, P273, P280, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P362+P364, P363, P391, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 115 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Danger

H301: Toxic if swallowed [Danger Acute toxicity, oral]

Chemical: Ammonium sulfide, (NH4)(SH)

REACH registered substance: Ammonium hydrogensulphide (EC: 235-184-3)

Restricted substance: Ammonium hydrogen sulphide

Ammonium hydrosulfide: Does not have an individual approval but may be used under an appropriate group standard

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:

Combustible. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire.

Crystals decompose at room temperature forming hydrogen sulfide (may be fatal) and ammonia; A severe skin irritant; [Merck Index] A severe skin, eye, and respiratory tract irritant; Can be absorbed through skin; [ICSC] Produces hydrogen sulfide on mixing with water; A reducing agent; [CAMEO] Aqueous solution: Causes severe eye burns and severe skin irritation; Inhalation of 500 ppm for 30 minutes causes headache, dizziness, and bronchial pneumonia; 600 ppm for 30 minutes can be fatal; Can be absorbed through skin resulting in hydrogen sulfide poisoning; [CHRIS] Causes mydriasis, dyspnea, and respiratory stimulation in lethal-dose animal studies (dermal, intraperitoneal, intravenous, and oral routes); [RTECS] See Hydrogen sulfide.

AMMONIUM HYDROSULFIDE, SOLUTION is a reducing agent. Reacts with oxidizing agents, including inorganic oxoacids, organic peroxides and epoxides. Reacts vigorously with acids to release hydrogen sulfide gas. Evolves poisonous ammonia on contact with strong bases.

On combustion, forms ammonia fumes, nitrogen oxides and sulfur oxides. Decomposes at room temperature. This produces toxic and corrosive gases including ammonia and hydrogen sulfide. Reacts with acids. This produces hydrogen sulfide and sulfur oxides. Reacts violently with oxidants. This generates fire or explosion hazard.

Acute Tox. 4 (31.3%)

Acute toxicity (ingestion) - category 3

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:

Use foam, powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

Fresh air, rest. Refer for medical attention.

Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Rinse mouth. Refer for medical attention .

Cough. Laboured breathing. Shortness of breath. Sore throat.

Redness. Pain.

Redness. Pain.

Abdominal cramps. Abdominal pain. Burning sensation in the mouth. Diarrhoea. Nausea. Vomiting.

Used in lubricants; [Merck Index] Used in photography, textiles, synthetic flavors, for coloring brasses and bronzes, and for iron control (soda ash production); [CAMEO]

Photographic Processing [Category: Other]

Applying metallic patinas [Category: Hobbies]