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Description
Catalogue Number	108175

Physicochemical Information
Melting Point	251 – 253 °C
Bulk density	400 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	Store at +2°C to +30°C.

Specifications
Identity (UV/VIS-Spectrum)	passes test
Appearance	White to almost white powder, eventually slightly yellowish.
Clarity of solution (1 g/l; ethanol)	passes test
Absorption maximum λ_max. (buffer pH 10.5)	592 – 596 nm
Spec. Absorptivity A 1%/1cm (λ_max; 0.01 g/l; buffer pH 10.5; calculated on anhydrous substance)	800 – 900
Transition range	pH 9.0 – pH 10.5 colourless – blue
Transition range (according to ACS)	passes test
Transition interval (according Reag. Ph. Eur.)	passes test
Loss on drying (110 °C)	≤ 1 %

Merck 108175 0005 Thymolphthalein Indicator Acs 5 GR.