Basic Information:
Alias: 4-Bromoaniline, p-Bromoaniline
CAS No: 106-40-1
Molecular Formula: C6H6BrN
Molecular Weight: 172.02
Physical State:White to light yellow to light orange solid
Melting Point:56-62°C (lit.)
Boiling Point:230-250°C
Uses:Used in the manufacturing of azo dyes and organic synthesis
Employed in the preparation of dihydroquinazoline
4-Bromoaniline (chemical formula C6H6BrN) is a commonly used organic compound with wide applications in the chemical, pharmaceutical, and dye industries. Understanding its relative molecular mass is of great importance for scientific research and industrial production. This article will provide a detailed explanation of the relative molecular mass of 4-Bromoaniline and its calculation method, as well as discuss its mass ratio in chemical reactions and its applications.
Calculation of Relative Molecular Mass
The relative molecular mass (Molecular Weight) refers to the sum of the relative atomic masses of all the atoms in a compound. For 4-Bromoaniline , with the chemical formula C6H6BrN, the steps to calculate its relative molecular mass are as follows:
Determine the relative atomic masses of each element:
Carbon (C): 12.01 × 6 = 72.06
Hydrogen (H): 1.01 × 6 = 6.06
Bromine (Br): 79.90 × 1 = 79.90
Nitrogen (N): 14.01 × 1 = 14.01
By summing all the parts:
Relative Molecular Mass = 72.06 + 6.06 + 79.90 + 14.01 = 172.03
Thus, the relative molecular mass of 4-Bromoaniline is 172.03.
Mass Ratio in Chemical Reactions
Understanding the relative molecular mass of4-Bromoaniline is essential in chemical reactions as it helps determine the mass ratio between reactants and products. For example, in the preparation of 4-bromoaniline, 4-nitrobromobenzene (C6H4BrNO2) is commonly used as a starting material, which undergoes a reduction reaction to form 4-bromoaniline.
Reaction equation:
C6H4BrNO2 + 3H2 → C6H6BrN + 2H2O
In this reaction, the relative molecular mass of 4-Bromoaniline helps calculate the mass relationship between reactants and products. For instance, using 1 mole of 4-nitrobromobenzene (relative molecular mass = 202.01) produces 1 mole of 4-bromoaniline, equivalent to 172.03 grams. At the same time, 2 moles of water are formed (relative molecular mass = 18.02), amounting to 36.04 grams.
Application Examples
In industrial production, knowing the relative molecular mass of 4-Bromoaniline aids in accurately proportioning reactants, enhancing reaction efficiency and product purity. For example, in dye synthesis, using 4-bromoaniline as an intermediate requires precise mass calculations to ensure consistency in dye color and quality. In the pharmaceutical industry, wher4-Bromoaniline serves as a key intermediate for certain drugs, accurate mass control improves the purity and efficacy of the final product.
The relative molecular mass of 4-Bromoaniline is 172.03, and this fundamental physical constant plays a crucial role in scientific research and industrial production. By understanding its relative molecular mass, the mass ratio in chemical reactions can be accurately calculated, optimizing production processes and improving product quality. In practical applications, effective use of this data will positively impact chemical synthesis and industrial manufacturing.