Ammonium Sulfide Solution

Description

Ammonium Sulfide Solution · CAS 12135-76-1 · H8N2S. UNII 2H0Q32TDFZ. Boiling Point: 104 °F at 760 mmHg (USCG, 1999); Boiling Point: 104 °C @760 [mm Hg]; Flash Point: 72 °F (USCG, 1999).

Identification

CAS Registry Number	12135-76-1
PubChem CID	25519
Molecular formula	H8N2S
IUPAC name	diazanium;sulfide
UNII (FDA)	2H0Q32TDFZ
FEMA number	2053

Computed Descriptors

Molecular Weight	68.15
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	68.04081944
Monoisotopic Mass	68.04081944
Topological Polar Surface Area	3
Heavy Atom Count	3
Formal Charge	0
Complexity	0

Physical & Chemical Properties

Boiling Point	104 °F at 760 mmHg (USCG, 1999)
Boiling Point	104 °C @760 [mm Hg]
Flash Point	72 °F (USCG, 1999)
Flash Point	72 °C (Closed cup)

Physical description & handling notes

• Ammonium sulfide aqueous solution is a colorless to yellow liquid, with an odor of rotten eggs or ammonia. Can slowly react with water to generate flammable and toxic hydrogen sulfide gas. This reaction is much faster with acid. It may be irritating to skin, eyes and mucous membranes and may cause illness from skin absorption. It may burn and/or emit toxic fumes if heated to high temperatures.
• Liquid
• 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]
• Yellow-orange crystals.
• Compound is found as colorless to yellow crystals below -18 °C or as yellow-orange crystals
• Strong odor of rotten eggs and ammonia

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: ANTIOXIDANT, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT Flavoring Agents

GHS Hazard Classification

Reported hazard statements	H314 (100%), H301, H312

Documented Uses

• 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]
• Textiles (Fiber & Fabric Manufacturing) [Category: Industry]
• Photographic Processing [Category: Other]
• Dressing Hair [Category: Other]
• Metal Extraction and Refining [Category: Industry]
• Applying metallic patinas [Category: Hobbies]

Synonyms

AMMONIUM SULFIDE; 12135-76-1; Diammonium sulfide; Ammonium sulphide; Ammonium monosulfide; True ammonium sulfide; Ammonium sulfide, true; DIAMMONIUM SULPHIDE; 2H0Q32TDFZ; Ammonium sulfide ((nh4)2S); DTXSID60893218; RefChem:112208; DTXCID001323150; 235-223-4; diazanium;sulfide; MFCD00010892

Frequently Asked Questions

What are the CAS number and molecular formula of Ammonium Sulfide Solution?

CAS 12135-76-1; molecular formula H8N2S; molecular weight — g/mol.

What other names is Ammonium Sulfide Solution known by?

AMMONIUM SULFIDE, 12135-76-1, Diammonium sulfide, Ammonium sulphide, Ammonium monosulfide, True ammonium sulfide.

What is the regulatory status of Ammonium Sulfide Solution?

Documented regulatory listings: EU Flavoring substances; FDA Substance added to food: ANTIOXIDANT, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT; Flavoring Agents.

Is Ammonium Sulfide Solution classified as hazardous?

Hazard statements reported: H314, H301, H312.

What are the key physical properties of Ammonium Sulfide Solution?

Boiling Point: 104 °F at 760 mmHg (USCG, 1999); Boiling Point: 104 °C @760 [mm Hg]; Flash Point: 72 °F (USCG, 1999); Flash Point: 72 °C (Closed cup).

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.