Thymolphthalein Indicator -500ml
Thymolphthalein is an acid–base indicator with a sharp color transition in the alkaline range. It is commonly used in analytical chemistry, titrations, and pH determination where high-pH endpoints are required.
CAS Number
125-20-2
Synonyms
• Thymolphthalein
• 3,3-Bis(4-hydroxy-2-methyl-5-isopropylphenyl)phthalide
• Thymol phthalein indicator
Chemical Formula
C₂₈H₃₀O₄
Ammonium Chloride Industrial Grade
CAS Number: 12125-02-9Synonyms:
- Ammonium muriate
- Sal ammoniac
- Ammonium chloride
- Ammonii chloridum
- Chloride of ammonium
- Ammonium salt
- NH₄Cl
Appearance
• White to slightly off-white crystalline powder
• Colorless in acidic/neutral solution
• Turns blue in alkaline solution
Uses / Applications
• Indicator for strong base titrations
• pH indicator for high-alkalinity systems
• Used in certain forensic tests (blue-colour reactions)
• Component in some chemical tablets for testing water hardness/alkalinity
• Educational chemistry demonstrations
• Used in invisible ink demonstrations (color appears in base)
Key Features
• pH transition range: 9.3 – 10.5
– Below pH 9.3: Colorless
– Above pH 10.5: Blue
• Sharp and vivid color change
• Good solubility in ethanol; limited solubility in water
• Stable under normal laboratory storage conditions
SDS Summary (Essential Points)
• Hazards: May cause skin/eye irritation; harmful if swallowed
• Handling: Use gloves and goggles; avoid inhaling dust
• Storage: Keep container tightly closed, dry, at room temperature
• Spill: Sweep up gently; avoid dust; ventilate area
• First Aid: Rinse eyes/skin with water; if ingested, seek medical attention
| Weight | 1 kg |
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