Phenolphthalein

• Catalog No.: 105945
• CAS Number: 77-09-8
• M. F.: C20H14O4
• M. W.: 318.32276

SYNONYMS

• IUPAC name: 3,3-bis(4-hydroxyphenyl)-1,3-dihydro-2-benzofuran-1-one
• IUPAC Traditional name: purga
• Synonyms: 3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone; 3,3-双(4-羟基苯基)-1(3H)-异苯并呋喃酮

DATABASE IDS

• Color Index Number: 764
• Beilstein Number: 284423
• EC Number: 201-004-7
• MDL Number: MFCD00005913
• CAS Number: 77-09-8
• PubChem SID: 24846716

PROPERTIES

• Empirical Formula (Hill Notation): C20H14O4
• Grade: ACS reagent
• Visual Transition Interval: 8.0 - 10, colorless to red
• Absorption Wavelength: λmax 374 nm (2nd)
• Absorption Wavelength: λmax 552 nm
• Melting Point: 261-263 °C(lit.)
• Solubility: acetone: soluble
• GHS Signal Word: Danger
• GHS Hazard statements: H341-H350-H361
• European Hazard Symbols: Toxic (T)
• Personal Protective Equipment: Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
• GHS Precautionary statements: P201-P281-P308 + P313
• Risk Statements: 45-62-68
• RTECS: SM8380000
• Safety Statements: 53-45
• German water hazard class: 3

DETAILS

Description (English)

Packaging
2.5 kg in poly drum
50, 100, 500 g in poly bottle
Application
Phenolphthalein is used as a general pH indicator. It is colorless in acidic solutions and turns pink in basic solutions. Phenolphthalein is also used as a model organic compound in the evaluation of the capture efficiency of various cyclodextrin constructs such as nanofiber-CD.

Description (简体中文)

包装
2.5 kg in poly drum
50, 500 g in poly bottle
2.5 kg packaged in open-head poly drums; 50 g, 500 g packaged in poly bottles
Application
Phenolphthalein is used as a general pH indicator. It is colorless in acidic solutions and turns pink in basic solutions. Phenolphthalein is also used as a model organic compound in the evaluation of the capture efficiency of various cyclodextrin constructs such as nanofiber-CD.