Emulsions are colloidal dispersions of two immiscible liquids, typically oil and water, stabilized by an emulsifying agent. In an emulsion, small droplets of one liquid are dispersed throughout the other liquid. The emulsifying agent helps to prevent the droplets from coalescing and separating. Various forms of emulsions exist, including oil-in-water …
DeepakRajput 
Flocculated and Deflocculated suspension & stability problems and methods to overcome
Flocculated and deflocculated suspensions refer to two different states based on the arrangement and behavior of solid particles within a liquid medium. 1. Flocculated Suspension Definition: In flocculated suspensions, particles are loosely aggregated, forming flocs or clusters. These clusters are held together by weak physical forces such as van der …
Preparation of suspension
The preparation of suspensions involves dispersing solid particles in a liquid medium to form a heterogeneous mixture. The process can vary depending on the characteristics of the materials involved and the intended use of the suspension. Here’s a general overview of the preparation of pharmaceutical suspensions: Ingredients 1. Active Pharmaceutical …
Classification of suspension
Suspensions can be classified based on various criteria, including the nature of the dispersed phase, the dispersion medium, and the intended use. Here are some common classifications of suspensions: 1. Based on Particle Size Coarse Suspensions: These suspensions contain relatively large particles that are visible to the naked eye. They …
Biphasic liquids – Suspension, Advantages, Disadvantages
Biphasic liquids refer to a system consisting of two immiscible liquid phases, typically one liquid dispersed in the form of droplets within the other. In such systems, the two liquids do not dissolve or mix uniformly but instead form distinct phases with separate physical and chemical properties.Various types of systems …
Definitions and preparations of Lotions
1. Definition Lotions are liquid or semi-liquid preparations designed for external application to the skin. They are typically used for moisturizing, soothing, and treating the skin. Lotions can vary in consistency from thin and pourable to thicker and creamier. 2. Common Components Water Water: Often the main component, serving as …
Definitions and preparations of Liniments
1. Definition: Liniments are topical formulations designed for external application to the skin. They typically contain a liquid or semi-liquid mixture containing active ingredients such as medicinal compounds, oils, and/or alcohol. Liniments are commonly used to relieve pain, inflammation, and musculoskeletal conditions. 2. Common Components Solvent Base: This can include …
Definitions and preparations of Elixirs
1. Definition Elixirs are liquid pharmaceutical preparations that typically contain alcohol and water. They are used for delivering medications in a stable and palatable form. Elixirs often include sweeteners and flavorings to improve taste. 2. Common Components Alcohol: Commonly used as a solvent in elixirs, ethanol serves as a preservative …
Definitions and preparations of Syrups
1. Definition Syrups are liquid pharmaceutical or culinary preparations consisting of a concentrated solution of sugar (usually sucrose) in water, often flavored and sometimes medicated. They are commonly used for delivering medications in a palatable form and for sweetening and flavoring in culinary applications. 2. Common Components Sugar: Typically sucrose, …
Definitions and preparations enema
Healthcare professionals commonly use enemas for various purposes, including relieving constipation, administering medications, preparing for certain medical procedures, or obtaining diagnostic information by introducing a liquid into the rectum and colon via the anus. Here are definitions and preparations related to enemas: 1. Enema Definition: An enema is a procedure …
