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Thymol Blue Free Acid ACS


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Thymol Blue Free Acid ACS

Thymol blue (thymolsulphonephthalein) is a brownish-green or reddish-brown crystalline powder that is used as a pH indicator.

  • Used as a pH indicator

Molecular Formula: C27H30O5S
Molecular Weight: 466.59 g/mol
Melting Point: 221 - 224 °C
Visual transition interval: pH 1.2 (red) - (acid range) pH 2.8 (yellow)
Visual transition interval: pH 8.0 (yellow) - (alkaline range) pH 9.2 (blue)
Loss on drying: < 5.0%

Hazard Phrazes: Not considered harmful under normal laboratory conditions

Cas No: 76-61-9
Einecs No: 200-973-3


Thymol Blue Free Acid ACS
Code Pack Price Qty  
RRBD33556-T 5g £5.55
RRBD33556-U 10g £8.95
RRBD33556-W 25g £13.95
RRBD33556-2W 50g £24.95
RRBD33556-X 100g £48.95