Indicators & stains

BROMOPHENOL BLUE INDICATOR AR/ACS

3',3'',5',5''-Tetrabromophenolsulfonephthalein; BPB

Article code: 02310
CAS: 115-39-9
Grade: AR/ACS
Category: Indicators & stains

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Properties

Article No.: 02310
Grade: AR/ACS
CAS No.: 115-39-9
Molecular Formula: C19H10Br4O5S
Molecular Weight: 669.99
H.S. Code: 2942.0090
Shelf Life: 60 Months

Product information

Article No.	02310	Grade	AR/ACS
Purity		CAS No.	115-39-9
Molecular Formula	C19H10Br4O5S	Molecular Weight	669.99
H.S. Code	2942.0090	Shelf Life	60 Months

Physical Properties

Physical state at 20 °C	Solid	Colour	Pale orange
Odour	Odorless	Melting point/ Freezing point [°C]	273 °C
Boiling point [°C]	279°C	Solubility in water [% weight]	0.4g/100g water @ 200C

Specifications

Appearance	Pink-orange to red to purple powder	Appearance of solution	Passes test
Transition range pH 3.0-4.6	Yellow to blue	Transition range acc. ACS	Passes test

Packaging options

5 g (00005)
25 g (00025)

Details

BROMOPHENOL BLUE INDICATOR AR/ACS 3',3'',5',5''-Tetrabromophenolsulfonephthalein; BPB MSDS DE EN FR KO PT ES TH TR COAs Packings 5 g (00005) 25 g (00025) Print friendly version Article No. 02310 Grade AR/ACS Purity CAS No. 115-39-9 Molecular Formula C 1 9 H 1 0 Br 4 O 5 S Molecular Weight 669.99 H.S. Code 2942.0090 Shelf Life 60 Months Physical Properties Physical state at 20 °C Solid Colour Pale orange Odour Odorless Melting point/ Freezing point [°C] 273 °C Boiling point [°C] 279°C Solubility in water [% weight] 0.4g/100g water @ 200C Specifications Appearance Pink-orange to red to purple powder Appearance of solution Passes test Transition range pH 3.0-4.6 Yellow to blue Transition range acc. ACS Passes test Safety Information and Hazard Symbols Safety Statement: 22-24/25 Revision Date: 12-Jan-2026 Home Lab Chemicals Adsorption Indicators BROMOPHENOL BLUE INDICATOR