Stearic Acid (Octadecanoic Acid) – 250g, Laboratory Reagent Grade

Stearic Acid, also known as Octadecanoic Acid, is a high‑purity Laboratory Reagent (LR) grade organic compound supplied in a convenient 250g pack. This versatile fatty acid is widely used in school and college laboratories for practical chemistry lessons, demonstrations, and investigations involving organic compounds and material properties.

With the chemical formula C₁₈H₃₆O₂ and CAS number 57‑11‑4, stearic acid is a stable solid at room temperature and is not classified as hazardous for transport (UN Number: Not Regulated). Its clear physical properties and predictable behaviour make it particularly suitable for educational use when handled in accordance with standard laboratory safety procedures.

Stearic acid is commonly used to explore concepts such as melting point, phase changes, and chemical structure of fatty acids. The 250g quantity is ideal for repeated classroom experiments, allowing teachers and technicians to prepare multiple lessons from a single container.

Key Features

• Stearic Acid (Octadecanoic Acid)
• Laboratory Reagent (LR) grade
• 250g pack size – ideal for school laboratories
• CAS No: 57‑11‑4
• UN Number: Not Regulated
• Stable white solid at room temperature
• Suitable for organic chemistry and materials science lessons

Ideal for School Science Lessons

Stearic Acid is well suited to KS3, GCSE, and A‑Level chemistry teaching, particularly in topics covering organic chemistry and physical properties of substances. It is commonly used in practical activities that help students link theory with hands‑on investigation.

• Investigating melting points and cooling curves
• Exploring the structure and properties of fatty acids
• Supporting lessons on organic compounds and carboxylic acids
• Demonstrating phase changes and thermal behaviour
• Safe, manageable experiments under teacher supervision

Reliable, easy to use, and educationally valuable, Stearic Acid is an excellent addition to any school science laboratory, supporting engaging practical lessons and strengthening students’ understanding of key chemical principles.