Which method is a methamphetamine lab method associated with red phosphorus?

Which method is a methamphetamine lab method associated with red phosphorus?

• A. One Pot Shake & Bake
• B. Red Phosphorus Method
• C. Vapor-Phase Method
• D. Birch/Nazi Method

Answer: (B)

Red phosphorus method uses red phosphorus as the reducing agent to convert pseudoephedrine into methamphetamine. In this approach, pseudoephedrine is combined with red phosphorus and an acid source (such as hydroiodic acid or iodine) to drive a reduction that yields methamphetamine. This method is specifically named for the key reagent, red phosphorus, and is historically the one most closely associated with that chemical. It’s distinct from the Birch/Nazi method, which uses liquid ammonia and alkali metals, and from other variants that aren’t defined by red phosphorus as the primary reagent.

Red phosphorus method uses red phosphorus as the reducing agent to convert pseudoephedrine into methamphetamine. In this approach, pseudoephedrine is combined with red phosphorus and an acid source (such as hydroiodic acid or iodine) to drive a reduction that yields methamphetamine. This method is specifically named for the key reagent, red phosphorus, and is historically the one most closely associated with that chemical. It’s distinct from the Birch/Nazi method, which uses liquid ammonia and alkali metals, and from other variants that aren’t defined by red phosphorus as the primary reagent.