Thermo Scientific Chemicals Bromocresol Purple

Description

CAS: 115-40-2 | C21H16Br2O5S | 540.22 g/mol

It is used as a pH indicator and to measure serum albumin concentrations. It is used as a pH indicator (5.2-6.8 : yellow to blue-purple) and also used in spectrophotometric determination of serum-albumin.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
It is used as a pH indicator and to measure serum albumin concentrations. It is used as a pH indicator (5.2-6.8 : yellow to blue-purple) and also used in spectrophotometric determination of serum-albumin.

Solubility
Insoluble in water. Soluble in ethanol (80 mg/ml), alcohol, methanol (4 mg/ml), methyl cellosolve (300 mg/ml) and dilute alkalies.

Notes
Transition interval: pH 5.2 (yellow) to pH 6.8 (purple)

Specifications

Chemical Identifiers

• CAS: 115-40-2
• Molecular Formula: C21H16Br2O5S
• Molecular Weight (g/mol): 540.22
• MDL Number: MFCD00011681
• InChI Key: ABIUHPWEYMSGSR-UHFFFAOYSA-N
• PubChem CID: 8273
• ChEBI: CHEBI:86154
• IUPAC Name: 2-bromo-4-[3-(3-bromo-4-hydroxy-5-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-6-methylphenol
• SMILES: CC1=CC(=CC(Br)=C1O)C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC(C)=C(O)C(Br)=C1

• Melting Point: ∼240°C (decomposition)
• Beilstein: 359618
• Merck Index: 14,1387
• Solubility Information: Insoluble in water. Soluble in ethanol (80mg/ml),alcohol,methanol (4mg/ml),methyl cellosolve (300mg/ml) and dilute alkalies.
• Formula Weight: 540.24
• Quantity: 10 g
• Chemical Name or Material: Bromocresol Purple

Safety and Handling

Hazard Category	Warning
Hazard Statement	GHS H Statement H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Precautionary Statement	GHS P Statement P261-P280-P305+P351+P338-P304+P340-P405-P501a Avoid breathing dust/fume/gas/mist/vapors/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.
EINECSNumber	204-087-8
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only