Emulsifiable concentrate characteristics?

• A. Active ingredient is not soluble in water but is dissolved in a solvent with emulsifiers; looks milky in water and requires some agitation
• B. Active ingredient is fully soluble in water; forms clear solution
• C. A solid that disperses slowly in water without agitation
• D. A suspension of fine particles in water that settles quickly

Answer: (A)

Emulsifiable concentrates are liquid formulations designed to be diluted in water to form an emulsion. The active ingredient isn’t soluble in water; it’s dissolved in an organic solvent that contains emulsifiers. When you mix this concentrate with water, it forms a milky, opaque emulsion rather than a clear solution, because tiny droplets of the solvent carry the active ingredient through the water. Because the active ingredient isn’t water‑soluble, you need some agitation to create and keep the emulsion uniform; otherwise, the droplets can separate or coalesce.

This matches the description of an emulsifiable concentrate. The other descriptions describe formulations that are either fully water-soluble and clear, or solid or suspending differently in water, which isn’t characteristic of an EC.