CAS 631-61-8 Ammonium acetate - Materials / Alfa Chemistry

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Ammonium acetate

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Catalog Number

ACM631618-1

CAS Number

631-61-8

Product Name

Ammonium acetate

Structure

Category

Salt; Electrolytes

Synonyms

Hexschloroplatinic(IV) acid hexahydrate

Description

Ammonium acetate is a chemical compound with the formula NH4CH3CO2. It is a white, hygroscopic solid and can be derived from the reaction of ammonia and acetic acid. It is available commercially.

IUPAC Name

Azanium;acetate

Molecular Weight

77.08

Molecular Formula

C2H7NO2

Canonical SMILES

CC(=O)[O-].[NH4+]

InChI

InChI=1S/C2H4O2.H3N/c1-2(3)4;/h1H3,(H,3,4);1H3

InChI Key

USFZMSVCRYTOJT-UHFFFAOYSA-N

Boiling Point

138.46 °C

Melting Point

110-112 °C

Flash Point

136 °C

Purity

99%+

Density

1.07 g/mL at 20 °C (lit.)

Solubility

Slightly soluble in acetone

Appearance

White solid

Application

Ammonium acetate serves a diverse range of purposes across various fields due to its unique chemical properties as a white, deliquescent crystalline solid. In analytical chemistry, it is a crucial reagent for determining the presence of lead and iron. Its role as a chemical intermediate is vital in manufacturing processes, particularly for acetamide production. In veterinary and medical applications, ammonium acetate acts as a diuretic and diaphoretic. Additionally, it finds utility in the textile industry as a dye mordant for wool and in the manufacture of foam rubbers and vinyl plastics. Its buffer capabilities are employed in experimental procedures involving lead sulfate separation and are complemented by a historical use as a food acidity regulator. Despite its past presence in food applications, its regulatory use in this capacity is no longer approved in the EU, highlighting its versatile yet evolving significance in both industrial and research contexts.

Storage

Store at +15 °C to +25 °C

Complexity

25.5

Exact Mass

77.047678466

Hazard Statements

T:Toxic

Heavy Atom Count

Log P

0.41480

Monoisotopic Mass

77.047678466

Odor

Slight acetic acid odor

Safety Description

S24/25

Stability

Stable at room temperature in closed containers under normal storage and handling conditions. Deliquescent; tends to lose ammonia.

Storage Conditions

2-8ºC

Topological Polar Surface Area

41.1 Å²

WGK Germany

Case Study

Synthesis of Pyridine Derivatives from Ammonium Acetate and Acetophenone

Zhang X, et al. Asian Journal of Organic Chemistry, 2019, 8(8), 1332-1335.

Ammonium acetate and acetophenone can be catalyzed by Cu(OTf)2 to prepare a series of 2,4,6-triphenylpyridines through cyclization and release of methane. The advantages of this synthetic strategy are good yield, readily available raw materials, cheap catalysts, solvent-free, and atom economy.
Synthesis Procedure of 2,4,6-Triphenylpyridine 3a
· The mixture of acetophenone (0.6 mmol), ammonium acetate (1.8 mmol, 3.0 equiv) and Cu(OTf)2 (10 mol%) was stirred at 110 °C for 12 h.
· When the reaction was completed (detected by TLC), the reaction mixture was cooled to room temperature, diluted with EtOAc and washed with brine.
· The organic layers were dried over anhydrous Na2SO4 and evaporated in vacuo. The residue was purified by column chromatography on silica gel to afford the oxime acetates with hexane/ethyl acetate as the eluent.

Ammonium Acetate Modified Rutile Tio2 Nanorod Array for Enhanced Perovskite Solar Cell Performance

Xu X M, et al. Surfaces and Interfaces, 2023, 43, 103563.

Ammonium acetate (CH3COONH4) interfacial modification is an effective strategy to enhance the photovoltaic performance of perovskite solar cells (PSCs). Rutile TiO2 nanorod arrays modified with ammonium acetate solution were used as the electron transport layer (ETL) of FTO/TiO@CH3COONH4/CsPbI2.25Br0.75/C perovskite solar cells. The PEC of the corresponding solar cell is 11.53%, which is about 22.4% higher than the control cell efficiency.
Preparation of ammonium acetate modified TiO2 nanorods ETL
· First, vertically oriented rutile TiO2 nanorod arrays were synthesized on FTO substrate via a simple one-step hydrothermal method and used as ETL.
· TiO2 nanorod ETL was modified by spin-coating ammonium acetate solution to achieve passivation of interface defects. Ammonium acetate treatment can enhance the separation of electrons and holes and can effectively reduce carrier recombination.
· Finally, the FTO/TiO2@CH3COONH4/CsPbI2.25Br0.75/C structure planar perovskite solar cell was successfully assembled using cheap commercial carbon slurry instead of the traditionally used gold/silver precious metals.

Ammonium Acetate for Zinc Recovery from Metallurgical Slag and Dust

Zheng X, et al. Materials, 2023, 16(14), 5132.

Ammonium acetate (CH3COONH4) can be used as a leaching material to recover zinc (Zn) from metallurgical slag and dust (MSD) through response surface methodology (RSM). The process of recovering Zn using ammonium acetate is as follows:
· Experimental design of response surface: Stirring speed, leaching time, total ammonia concentration, and liquid-to-solid ratio are used as variables in the leaching experiment. The effective extraction rate of Zn during the coordination leaching process of NH3-CH3COONH4-H2O solution is defined as the response value. Other leaching experimental conditions include [NH3]/[NH4]+ molar ratio of 1:1 and leaching temperature of 25°C.
· Leaching experiment: Sample 20.00g of dry MSD material and mix it with the newly prepared ammonium acetate (NH3-CH3COONH4-H2O) leaching agent in a 300mL Erlenmeyer flask under stirring. Zinc leaching from MSD samples under specific experimental parameters.
· Leaching reaction to extract zinc: In this leaching system, dissolved zinc oxide (ZnO) can combine with ammonium ions (NH4+) and ammonia (NH3) to form a soluble [Zn(NH3))i]2+ complex. In addition, zinc ions can combine with carboxylate anions (RCOO-) to form stable complexes.

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