ammonium hydrogensulphide

Description

ammonium hydrogensulphide · CAS 12124-99-1 · H4N.HS. UNII A824D6LXMB. Vapor Pressure: 390.0 [mmHg].

Identification

Computed Descriptors

Physical & Chemical Properties

Physical description & handling notes

• 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.
• Solubility in water, g/100ml: 128.1
• Vapor pressure, kPa at 22 °C: 52
• 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.

GHS Hazard Classification

Documented Uses

• 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]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Applying metallic patinas [Category: Hobbies]
• Ammonium sulfide ((NH4)(SH)): ACTIVE

Synonyms

Ammonium bisulfide; Ammonium hydrosulfide; Ammonium sulfhydrate; Ammonium hydrogen sulfide; 12124-99-1; Ammonium mercaptan; Ammonium hydrogensulphide; Monoammonium sulfide; Ammonium sulfide ((NH4)(SH)); Sirnik amonny; Sirnik amonny [Czech]; EINECS 235-184-3; A824D6LXMB; AMMONIUM BISULFIDE [MI]; DTXSID20894064; RefChem:557670

Frequently Asked Questions

What are the CAS number and molecular formula of ammonium hydrogensulphide?

CAS 12124-99-1; molecular formula H4N.HS; molecular weight — g/mol.

What other names is ammonium hydrogensulphide known by?

Ammonium bisulfide, Ammonium hydrosulfide, Ammonium sulfhydrate, Ammonium hydrogen sulfide, 12124-99-1, Ammonium mercaptan.

Is ammonium hydrogensulphide classified as hazardous?

Hazard statements reported: H312, H314, H400, H301.

What are the key physical properties of ammonium hydrogensulphide?

Vapor Pressure: 390.0 [mmHg].

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.