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515809

Sigma-Aldrich

Ammonium sulfide solution

40-48 wt. % in H2O

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Linear Formula:
(NH4)2S
CAS Number:
Molecular Weight:
68.14
MDL number:
eCl@ss:
38030205
PubChem Substance ID:
NACRES:
NA.21

form

liquid

Quality Level

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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This Item
W205303A19521.05442
Ammonium sulfide solution GR for analysis

Supelco

1.05442

Ammonium sulfide solution

density

1 g/mL at 25 °C

density

0.997 g/mL at 25 °C

density

-

density

0.997 g/cm3 at 20 °C

Quality Level

200

Quality Level

400

Quality Level

100

Quality Level

100

concentration

40-48 wt. % in H2O

concentration

20 wt. % in H2O

concentration

20% in H2O, 20.0-24.0% (titration by Na2S2O3)

concentration

-

refractive index

n20/D 1.467

refractive index

n20/D 1.388

refractive index

-

refractive index

-

bp

40 °C

bp

-

bp

-

bp

-

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

Hazard Classifications

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

Supplementary Hazards

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

68.0 °F - closed cup

Flash Point(C)

20 °C - closed cup


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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)
Burdock GA.
Encyclopedia of Food and Color Additives, 1, 142-142 (1997)
M G Narotsky et al.
Teratology, 56(4), 252-261 (1997-12-31)
Several low-molecular weight halocarbons have been shown to cause full-litter resorption (FLR), i.e., pregnancy loss, in Fischer-344 rats treated during organogenesis. To determine periods of gestation sensitive to acute exposure, a single dose of 150 mg carbon tetrachloride (CCl4)/kg was

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