Thallium

from source

Tl · 204.383 g/mol

Ramor · Talio · Thulium Metallicum · Tl

What is Thallium?

A heavy metal once sold as rat poison and now banned for it, tasteless and slow enough that it became a favourite of poisoners in fiction. Element 81. from source

CategoryElement & material

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Fig. 1 · 2D structure RDKit

SMILES[Tl]

Where you'll find it

A pure element or an engineered material, rather than an ingredient in a product. See the rest of the element & material group.

Toxicity & hazards

DangerCorrosiveToxicIrritantHealth hazardH300, H310, H314, H319, H330, H340, H360, H362, H370, H372, H373, H413from source

Sources & methodology

PubChem CID: 5359464
Wikidata: Q932
Structure: PubChem → RDKit
Data refreshed: September 13, 2026

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