Which statement describing butyrate dope is true in comparison to nitrate dope?

• A. It is cheaper.
• B. It is much less flammable.
• C. It cures faster.
• D. It adheres better.

Answer: (B)

Flammability is the key factor distinguishing these dopes. Nitrate dope, based on nitrocellulose, uses solvents and a polymer that make it highly flammable, which has long been a safety concern in shop and field use. Butyrate dope, which is cellulose acetate butyrate, has a less flammable solvent system and polymer makeup, so it presents a much lower fire risk. Because of this chemical difference, butyrate dope is much less flammable than nitrate dope. Price, cure rate, and adhesion depend on the specific formulation and application conditions, but the safety advantage regarding fire risk is the most consistent and defining difference.