Potassium Iodide Pure – 500g (LR Grade)

Potassium Iodide Pure 500g, also known by the secondary names Knollide and Potide, is a high‑quality Laboratory Reagent (LR) grade inorganic salt designed for controlled use in educational science laboratories. With the chemical formula KI and CAS Number 7681‑11‑0, potassium iodide is a widely used compound in school chemistry and biology teaching.

Supplied in a clearly labelled 500g container, this white, crystalline, water‑soluble solid does not carry a UN transport classification, but should still be handled and stored in accordance with COSHH regulations and standard school laboratory safety procedures. The useful pack size makes it well suited to preparation rooms and repeated classroom use.

This product is supplied exclusively to educational establishments and is intended for use by trained technicians and teachers, with student use under appropriate supervision.

Key Features

• Potassium Iodide (KI)
• Also known as Knollide or Potide
• Laboratory Reagent (LR) grade purity
• Supplied in a 500g container
• CAS Number: 7681‑11‑0
• No UN Number assigned
• White, crystalline, water‑soluble solid
• Suitable for educational laboratory use
• For supply to schools and educational establishments only

Ideal for School Science Lessons

Potassium Iodide is a versatile reagent used across KS3, GCSE and A‑Level Science, supporting both chemistry and biology topics. It is commonly used in lessons involving:

• Halogens and halide salts
• Redox reactions involving iodine and iodide ions
• Preparation of test solutions for starch–iodine reactions
• Demonstrating solubility and ionic bonding
• Supporting biology practicals, such as food tests for starch

When prepared by technicians and used under supervision, potassium iodide enables students to make clear connections between theoretical concepts and practical outcomes. The 500g size offers excellent value for busy science departments, supporting repeated use across multiple year groups.

Reliable, clearly labelled, and curriculum‑aligned, Potassium Iodide Pure 500g is a dependable reagent for safe and effective practical science teaching in schools and colleges.