Key Properties

• pH transition range: 4.0 – 6.0

• Colour change: Colourless (acidic) → Yellow (alkaline)

• Phenolic nitro compound

• Provides a clear and sharp endpoint

• Soluble in alcohol; slightly soluble in water

Uses

• Acid–base titrations

• Analytical chemistry laboratories

• Educational and research applications

• pH indication in weak acid systems

Storage

• Store in a tightly closed container

• Keep in a cool, dry, well-ventilated area

• Protect from light and heat

Safety & Handling (SDS Summary)

• Toxic if swallowed or absorbed through skin

• May cause skin, eye, and respiratory irritation

• Harmful with prolonged exposure

• Use appropriate PPE: gloves, lab coat, eye protection

• Avoid inhalation of dust or vapours

• Dispose of according to hazardous chemical waste regulations