19244-98-5

Basic information

• Product Name: guanidine monohydrobromide
• Synonyms: guanidine monohydrobromide;Guanidine HydrobroMide;Guanidine, hydrobromide(1:1)
• CAS NO: 19244-98-5
• Molecular Formula: Br*CH₆N₃
• Molecular Weight: 139.98244
• EINECS: 242-909-7
• Product Categories: Amines;Intermediates & Fine Chemicals;Pharmaceuticals;Amines, Pharmaceuticals, Intermediates & Fine Chemicals
• Mol File: 19244-98-5.mol
• Article Data: 3

Chemical Properties

• Melting Point: 189.0 to 193.0 °C
• Boiling Point: 132.9°Cat760mmHg
• Flash Point: 34.2°C
• Appearance: /
• Density: 1.55g/cm³
• Vapor Pressure: 8.67mmHg at 25°C
• Water Solubility: Soluble in water
• CAS DataBase Reference: guanidine monohydrobromide(CAS DataBase Reference)
• NIST Chemistry Reference: guanidine monohydrobromide(19244-98-5)
• EPA Substance Registry System: guanidine monohydrobromide(19244-98-5)

Safety Data

• Hazardous Substances Data: 19244-98-5(Hazardous Substances Data)

Usage

Description

Guanidine monohydrobromide (GDBr) is a chemical compound with the formula C(NH2)3Br. It is known for its ability to promote and enable stable 2D perovskite structures through van der Waals interactions between guanidinium cations and hydrogen-halogen bonding between guanidinium cations and halide ions of different layers. Guanidine monohydrobromide is also recognized for its good bacterial and fungicidal efficacy at low concentrations, making it a potential disinfectant.

Uses

1. Used in Solar Cell Applications:
Guanidine monohydrobromide is used as a precursor for synthesizing mixed cation or anion perovskites in the optimization of the band gap, carrier diffusion length, and power conversion efficiency of perovskite-based solar cells. The presence of guanidinium cations in the perovskite film results in reduced defect density and a longer carrier lifetime due to the hydrogen-bonding effect produced by hydrogen from the guanidinium salt.
2. Used as a Disinfectant:
Guanidine monohydrobromide is used as a disinfectant due to its good bacterial and fungicidal efficacy when used in low concentrations. This makes it a promising candidate for various applications where disinfection is required, such as in the medical, food, and water treatment industries.

InChI:InChI=1/CH5N3.BrH/c2-1(3)4;/h(H5,2,3,4);1H

Upstream product

• 57-13-6 urea 
• 593-85-1 diguanidine carbonate 
• 593-85-1 guanidine carbonate 

Downstream Products

• 108-78-1 2,4,6-triamino-s-triazine 
• 44976-13-8 N,N-diethylimidodicarbonimidic diamide 

Relevant articles and documents

Role of Hydrogen Bonding in Phase Change Materials

Phase change materials (PCMs), which melt in the temperature range of 100-230 °C, are a promising alternative for the storage of thermal energy. In this range, large amounts of energy available from solar-thermal, or other forms of renewable heat, can be stored and applied to domestic or industrial processes, or to an organic Rankine cycle (ORC) engine to generate electricity. The amount of energy absorbed is related to the latent heat of fusion ( "Hf) and is often connected to the extent of hydrogen bonding in the PCM. Herein, we report fundamental studies, including crystal structure and Hirshfeld surface analysis, of a family of guanidinium organic salts that exhibit high values of "Hf ?, demonstrating that the presence and strength of H-bonds between ions play a key role in this property.

Syntheses, Crystal Structures, and Optical Properties of the Hexagonal Perovskites Variants ABX3 (B = Ni, A = Gu, FA, MA, X = Cl, Br; B = Mn, A = MA, X = Br)

Herein we report on our systematic investigations on the solution processed synthesis and characterization of transition metal halides (guanidinium, formamidinium, and methylammonium nickel bromides and chlorides as well as methylammonium manganese bromide) with the composition ABX3 (A = organic cation; B = Mn, Ni; X = Cl, Br). The investigations were carried out with respect to possible applications of 3d transition metal compounds for the perovskite solar cell. All the compounds represent different variants of the hexagonal perovskite structure (2H). Crystal structures and symmetry relations are discussed. Additionally, (CH3NH3)2MnI4, which consists of tetrahedral coordinated Mn2+, and the water containing compounds (CH3NH3)MnBr3·2H2O, which forms chains of edge sharing octahedra, as well as (CH3NH3)NiCl3·2H2O, which consists of dimers of octahedra, are presented. Investigations on the crystal structures are supported by vibrational and optical spectroscopy.