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515809

Sigma-Aldrich

Ammonium sulfide solution

40-48 wt. % in H2O

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About This Item

Linear Formula:
(NH4)2S
CAS Number:
12135-76-1
Molecular Weight:
68.14
MDL number:
MFCD00010892
UNSPSC Code:
12352300
eCl@ss:
38030205
PubChem Substance ID:
329757716
NACRES:
NA.21

form

liquid

Quality Level

200

concentration

40-48 wt. % in H2O
40.0-48.0% (titration by Na2S2O3)

refractive index

n20/D 1.467

bp

40 °C

density

1 g/mL at 25 °C

SMILES string

N.N.S

InChI

1S/2H3N.H2S/h2*1H3;1H2

InChI key

UXXGWUQNRMPNKH-UHFFFAOYSA-N

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General description

Ammonium sulfide solution (aqueous ammonium sulfide) is a 40-48wt.% solution in water. Ammonium sulfide is an inorganic salt with a sulfurous odor, which is commonly used in the food industry as a flavoring agent. The influence of ammonium sulfide treatment on (100)GaAs (gallium arsenide) surfaces has been studied by x-ray photoelectron spectroscopy (XPS) and reflection high-energy electron diffraction (RHEED). Its potential as an alternative to hydrogen sulfide for the transformation of activated amides to thioamides by thiolysis has been investigated. The reaction of ammonium sulfide with 3-hydroxy-2-butanone over a range of temperature has been reported to form various flavor compounds.

Application

Ammonium sulfide solution may be used to enhance the performance of type-II InAs/GaSb super lattice photodiodes by surface passivation technique.

Signal Word

Danger

Hazard Statements

H225,H314,H400

Hazard Classifications

Aquatic Acute 1 - Flam. Liq. 2 - Skin Corr. 1B

Supplementary Hazards

EUH031

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

68.0 °F - closed cup

Flash Point(C)

20 °C - closed cup

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 4: Flammable liquids
Type 1 petroleums
Hazardous rank II
Water insoluble liquid

JAN Code

515809-500ML:
515809-VAR:
515809-100ML:
515809-4X100ML:
515809-BULK:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Ammonium sulfide passivation of Type-II InAs/GaSb superlattice photodiodes.
Gin A, et al.
Applied Physics Letters, 84(12), 2037-2039 (2004)
Mild method for the conversion of amides to thioamides.
Charette AB and Grenon M.
The Journal of Organic Chemistry, 68(14), 5792-5794 (2003)
Carpenter MS, et al.
J. Vac. Sci. Technol. B, 7(4), 845-850 (1989)
[Photographic models in the study and valuation of the silver reactions in histology. II. Optical density variation in enlarging exposure scale under the action of the ammonium sulphide on silver (author's transl)].
M Vialli et al.
Mikroskopie, 36(3-4), 117-127 (1980-06-01)
J M Zdolsek et al.
Free radical biology & medicine, 15(1), 1-11 (1993-07-01)
The objective of this study was to develop a sensitive cytochemical method for the visualization of iron, both at light microscopical (LM) and at electron microscopical (EM) levels, in glutaraldehyde-fixed cultured cells with reasonable morphological preservation. The method is based
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