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Description
Catalogue Number	108121
Synonyms	3,3′,5,5′-Tetrabromo-m-cresolsulfonphthalein, BCG

Physicochemical Information
Melting Point	217 – 218 °C
Bulk density	350 kg/m3

Safety Information according to GHS
Storage class	10 – 13 Other liquids and solids
WGK	WGK 3 highly hazardous to water
Disposal	3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

Storage and Shipping Information
Storage	NoTempLimit

Specifications
Identity (UV/VIS-Spectrum)	passes test
Clarity of solution (1 g/l; ethanol)	passes test
Transition range	pH 3.8 – pH 5.4 yellowish green – blue
Absorptions maximum λ 1 _max. (buffer pH 3.8)	438 – 445 nm
Absorptions maximum λ 2 _max. (buffer pH 5.4)	615 – 618 nm
Spec. Absorptivity A 1%/1cm (λ 1 _max.; 0.01 g/l; buffer pH 3.8; calc. on dried substances)	220 – 280
Spec. Absorptivity A 1%/1cm (λ 2 _max.; 0.01 g/l; buffer pH 5.4; calc. on dried substances)	460 – 590
Loss on drying (110 °C)	≤ 3 %
Transition range (according to ACS)	passes test
Transition interval (according Reag. Ph Eur)	pH 3.6 – pH 5.2 yellow – blue
Sensitivity test	passes test

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