Masking and demasking are techniques used to selectively protect or reveal certain ions or functional groups during chemical reactions or analysis. These techniques are particularly useful in complex mixtures to control the reactivity of specific components and prevent unwanted side reactions. 1. Masking: Masking involves temporarily protecting a specific ion or group by forming a … Read more
Metal ion indicators, also known as chelating indicators or metallochromic indicators, are organic compounds that form colored complexes with metal ions. They are used in complexometric titrations to detect the endpoint, which occurs when all the metal ions in the sample have reacted with the chelating agent. Indicators are selected based on their ability to … Read more
Flow properties describe how powders or granules move under force, critical for efficient processing in pharmaceutical and industrial applications. Good flow properties ensure uniform mixing, accurate dosing, and smooth manufacturing, reducing defects and improving product quality. Definition: The ability of powder particles to flow under gravity or mechanical force. Factors Affecting Flow: Particle Size: Fine … Read more
Classification of Complexometric Titrations is based on the type of metal ion determined, the titration method used, and the nature of the indicator or masking agents involved. Direct Titration in Classification of Complexometric Titrations: In this method, metal ions in the sample are titrated directly with a chelating agent, such as EDTA. The endpoint is … Read more
Introduction of Complexometric Titration: It is a volumetric analysis technique used to determine the concentration of metal ions by forming a complex with a chelating agent (titrant). It is commonly applied in fields such as chemistry, environmental science, and pharmaceutical analysis, particularly for quantifying metal ions, especially transition metals. Principle of Complexometric Titration: The titration … Read more
Particle size and shape are critical physical parameters in pre-formulation studies that significantly influence the behavior and performance of pharmaceutical dosage forms. Particle size and shape determine the surface area, flowability, dissolution rate, and bioavailability of a drug, making them critical factors in pre-formulation and product design. Particle Size: Definition: Refers to the diameter or … Read more
Physical Properties in Pre-formulation Studies impact drug solubility, stability, and formulation efficiency. Understanding Physical Properties in Pre-formulation Studies like crystalline vs. amorphous state helps optimize drug performance and bioavailability. Physical Form: Crystalline vs. Amorphous State Physical form: Crystalline vs. Amorphous state indicates whether a drug has an ordered (crystalline) or disordered (amorphous) molecular structure, influencing … Read more
Explore the functions and responsibilities of the Central Drugs Laboratory CDL in drug testing analysis and regulatory enforcement in India. Purpose: Acts as the premier testing and analytical facility for drugs and cosmetics in India. Functions of Central Drugs Laboratory: Quality Testing: Conducting rigorous tests to ensure that drugs and cosmetics meet the prescribed standards. … Read more
In pharmaceutical analysis, the estimation of sodium chloride (NaCl) can be done through precipitation titrations. Precipitation titrations are a type of volumetric analysis where a precipitating agent is added to the sample to cause the formation of a solid precipitate. The endpoint of the titration is reached when all of the analyte has reacted to … Read more
Learn about offences and penalties related to labeling and packing of drugs and cosmetics under Indian law and how to avoid legal violations. Non-compliance with labeling and packaging regulations can lead to serious repercussions to protect consumer interests. Common Offences: Mislabeling: Providing false or misleading information on the label. Omitting essential information like expiry date … Read more
