Question

Which of the following cannot be used as an Antiseptic (a) Iodoform (b) Boric acid (c) \(1 \%\) solution of Phenol (d) Low concentrated solution of \(\mathrm{SO}_{2}\)

Short answer

Low concentrated solution of SO_2 cannot be used as an antiseptic.

Step-by-step solution

Understanding the Definition of Antiseptic

Antiseptics are substances that prevent the growth of disease-causing microorganisms. They are generally applied to living tissues to reduce the possibility of infection.

Evaluating Iodoform

Iodoform is known to be used as an antiseptic due to its antibacterial properties. It is often applied on wounds to prevent infection.

Evaluating Boric Acid

Boric acid is commonly used as an antiseptic agent for minor cuts and burns. Its mild acidity helps to disinfect wounds.

Evaluating 1% Solution of Phenol

Phenol, especially in diluted form, is used as an antiseptic. A 1% solution of phenol is commonly used on the skin as an antiseptic.

Evaluating Low Concentrated Solution of SO2

Sulfur dioxide ( SO_2 ) is not typically used as an antiseptic. While it may have some disinfectant properties, it's generally used as a preservative or fumigant and can be harmful to tissues.

Final Conclusion

Based on the typical uses of these substances, the low concentrated solution of SO_2 cannot be used as an antiseptic because it is not safe for application on living tissues.

Key concepts

Iodoform

Iodoform is a yellow, crystalline substance with a strong, distinct odor. Traditionally, iodoform has been utilized as an antiseptic in medical settings due to its ability to prevent infection by killing bacteria.
It is particularly effective against a wide range of pathogens and is often applied topically on minor wounds, ulcers, and cuts. Iodoform works by releasing iodine when it comes into contact with the skin. Iodine is a potent antiseptic, which is why iodoform is useful for cleaning injuries and preventing bacterial growth. As a mild antiseptic, iodoform has been phased out in modern medicine in favor of more efficient and less odorous compounds. Nonetheless, its historical significance in medical wound care remains notable.

Boric Acid

Boric acid is widely known for its antiseptic properties, especially in treating minor cuts and burns. It appears as a white, odorless powder that easily dissolves in water, forming a mild acidic solution.
When applied to wounds, boric acid's mild acidity helps to cleanse and disinfect. This ability to reduce infections makes it a popular choice for treating minor skin ailments. Besides its role as an antiseptic, boric acid is also used in eye washes. It can soothe irritated eyes while ensuring the area remains clean from potential bacterial growth.

• Helpful in minimizing infections
• Widely used in treating minor burns and cuts
• Found in certain eye wash solutions

Phenol Solution

Phenol, particularly in a 1% solution, has been used as an antiseptic. Known for its germicidal properties, phenol was one of the first antiseptics used in surgeries.
Though highly effective, phenol needs to be diluted to ensure safety on living tissues, as concentrated phenol can be corrosive and toxic. When dealing with a 1% phenol solution, it is suitable for use on the skin to cleanse and disinfect minor wounds. However, its usage has become less common due to the potential risks of phenol exposure and the development of more user-friendly antiseptic agents. Nonetheless, its historical role in elevating surgical hygiene and preventing infections is undeniable.

• Effective as a diluted antiseptic
• Key player in early surgical cleanliness
• Replaced by less caustic alternatives

Sulfur Dioxide

Sulfur dioxide (SO₂), unlike the other substances mentioned, is not typically used as an antiseptic. Although it has some disinfectant properties, it's mainly used in industry as a preservative or fumigant.
Sulfur dioxide works by inhibiting bacterial growth due to its antimicrobial properties, but it's generally unsuitable for application on living tissues due to its potential to cause irritation and harm. The use of SO₂ where living tissues are involved is rare because:

• It can cause skin irritation and respiratory issues
• It's not safe for direct application on the body
• Commonly utilised in food preservation rather than medical uses

Because of these reasons, sulfur dioxide cannot be recommended as an antiseptic, reinforcing the importance of selecting appropriate substances for medical use.