SPECIALITY DYESTUFF

Product: Bromothymol Blue, ACS Grade.

CAS #: 76-59-5.

Synonyms 3,3”-Dibromothymolsulphonephthalein; BTB; 3’,3”-Dibromothymolsulphonphthalein; Bromothymol Blue, indicator.

Molecular Formula: C27H28Br2O5S. Molecular Weight: 624.39.

Structural Formula:

Description: Light pinkish-white to brown crystalline powder.

Transition Range: pH 5.8 to pH 7.6. (Yellow to Blue).

Absorptivity 1%:

At λ max. 438.5 NM: (pH 5.8) – 266 to 300.

At λ max. 615.5 NM: (pH 7.6) – 470 to 520.

Solubility: Clear yellow solution. (0.1% EtOH).

Loss on Drying: 3.0% max. at 110.0°C.

Assay: 95.0% min.

Quantity Available: 200.0 kilos per month.

Packing: 25.0 kilos net, new, polylined HDPE drums.

Delivery: 4 to 6 weeks from receipt of confirmation.

Price: Available on request.

Payment: Negotiable.

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