1.03025

Bromocresol purple

pH indicator, ACS, Reag. Ph Eur

• Synonym(s): Bromocresol purple, 5′,5′′-Dibromo-o-cresolsulfonphthalein
• Empirical Formula (Hill Notation): C₂₁H₁₆Br₂O₅S
• CAS Number: 115-40-2
• Molecular Weight: 540.22
• MDL number: MFCD00011681
• UNSPSC Code: 12171502
• EC Index Number: 204-087-8
• NACRES: NA.21

Properties

• Product Name: Bromocresol purple, indicator ACS,Reag. Ph Eur
• grade: ACS reagent
• Quality Level: 200
• Agency: reag. Ph. Eur.
• form: solid
• loss: ≤1% loss on drying, 110°C
• visual transition interval: 5.2-6.8, greenish yellow to blue-violet
• mp: 242 °C
• bulk density: 515 kg/m³
• storage temp.: 2-30°C
• SMILES string: [S]1(=O)(=O)OC(c4c1cccc4)(c3cc(c(c(c3)C)O)Br)c2cc(c(c(c2)C)O)Br
• InChI: 1S/C21H16Br2O5S/c1-11-7-13(9-16(22)19(11)24)21(14-8-12(2)20(25)17(23)10-14)15-5-3-4-6-18(15)29(26,27)28-21/h3-10,24-25H,1-2H3
• InChI key: ABIUHPWEYMSGSR-UHFFFAOYSA-N

Description

Analysis Note

Transition range: pH 5.2 - pH 6.8greenish yellow - blue violet
Appearance of solution: passes test
Loss on drying (110 °C): ≤ 1
Transition range (according to ACS): passes test
Sensitivity test: passes test

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable