Questions and Answers
What is the primary function of alcohol in tinctures?
Which of the following solvents is NOT suitable for internal use tinctures?
Why is it important to avoid mixing tinctures with liquids that have diverse solvent characters?
What effect does ethanol have on some organic compounds during the extraction process?
Signup and view all the answers
Which solvent is specifically known for better extracting alkaloids due to its acidic nature?
Signup and view all the answers
What is the primary reaction that takes place when preparing tincture iodine?
Signup and view all the answers
What is a notable characteristic of tincture iodine affecting its application?
Signup and view all the answers
Which process is used to prepare compound benzoin tincture?
Signup and view all the answers
What storage considerations must be taken into account for tinctures?
Signup and view all the answers
Which of the following is NOT a use of compound benzoin tincture?
Signup and view all the answers
Study Notes
Tinctures Overview
- Tinctures are alcoholic or hydro-alcoholic solutions derived from plant materials or chemical substances.
- Preparation methods, active ingredient strength, alcoholic content, and intended medical use vary widely.
- Chemical tinctures are created by dissolving substances like iodine or thimerosal in a suitable solvent.
Alcohol Content and Its Role
- Alcohol concentration in tinctures ranges from 15% to 80%.
- Acts as a preservative, prevents microbial growth, and maintains the solubility of extracts.
- The specific solvent mixture is crucial for product stability; incompatible liquids can cause solute precipitation.
Solvents Used in Tinctures
- Ethanol: Excellent for dissolving both polar and non-polar compounds; also acts as a preservative but may denature some components.
- Alternatives: Vinegar, glycerin, ether, and propylene glycol are used; glycerites are alcohol-free options ideal for internal use.
- Vinegar is effective for extracting alkaloids, while ether and propylene glycol are confined to external preparations.
Examples of Tinctures
-
Tincture Iodine:
- Composed of 2% iodine, 2.4% sodium iodide, and diluted with alcohol and purified water.
- Acts as a local anti-infective agent; characterized by its reddish-brown color and potential skin staining.
- Recommended for household first-aid; store in tight containers to prevent alcohol loss.
-
Compound Benzoin Tincture:
- Prepared through the maceration of benzoin, aloe, storax, and tolu balsam in alcohol with added water and hydrochloric acid.
- Used to treat skin issues like bedsores, ulcers, and cracked skin; also employed for inhalation therapy in respiratory conditions.
- Storage: Needs tightly sealed containers; protect from excessive heat and light to prevent photochemical changes.
Storage and Handling
- Tinctures should be stored in tightly stoppered containers to avoid alcohol loss.
- Light-resistant containers are necessary to avoid photochemical changes of constituents.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz explores the characteristics and preparation methods of tinctures in medicine and pharmacy. It covers the variations in strength, alcoholic content, and usage of these solutions derived from vegetable materials or chemical substances. Test your knowledge on tinctures and their applications.
