- Some of this article is speculation. However, I believe the facts as circumstantial as they are support the canonical facts.
- First, it is known from Data that quadratanium is no more suspicious for his life-form than an antiseptic or an ointment is for humans. Some antiseptics and ointments, if ingested orally, can cause harm to people.
- Secondly, Lore's movements. After his appearance at the ship's stores, he returned to Data's quarters.
- Thirdly, and lastly, Lore used a substance which appeared as fine dust. Natasha Yar described the quadratanium as "finely grind".
Combining these three facts, I believe the substance which poisoned Data is quadratanium. Airtram3