1.07233

Phenolphthalein

pH indicator, ACS, Reag. Ph Eur

• 別名: Phenolphthalein
• 実験式（ヒル表記法）: C₂₀H₁₄O₄
• CAS番号: 77-09-8
• 分子量: 318.32
• MDL番号: MFCD00005913
• UNSPSCコード: 12171502
• EC Index Number: 201-004-7
• NACRES: NA.21

特性

• product name: Phenolphthalein, indicator ACS,Reag. Ph Eur
• グレード: ACS reagent
• 品質水準: 200
• 認証: reag. Ph. Eur.; suitable for SM 2310; suitable for SM 2320
• 蒸気圧: <0.00001 Pa ( 50 °C)
• 形状: solid
• 損失: ≤1% loss on drying, 105°C
• 色: white to yellow-white
• visual transition interval: 8.2-9.8, colorless to red-violet
• mp: 263.7 °C
• 密度: 1.296 g/cm³ at 20 °C
• かさ密度: 350‑450 kg/m³
• λmax: 551-554 nm (buffer pH 9.8)
• 保管温度: 2-30°C
• InChI: 1S/C20H14O4/c21-15-9-5-13(6-10-15)20(14-7-11-16(22)12-8-14)18-4-2-1-3-17(18)19(23)24-20/h1-12,21-22H
• InChI Key: KJFMBFZCATUALV-UHFFFAOYSA-N

詳細

アプリケーション

• Effectiveness of Phenolphthalein in Sol-Gel Coatings for Sensing and Inhibiting Corrosion on Mild Steel: Research detailing the application of phenolphthalein and Thymol Blue in sol-gel coatings, demonstrating their effectiveness in corrosion inhibition and sensing on mild steel surfaces (Patra et al., 2024).



• Highly Permeable Ultrafiltration Membranes Based on Polyphenylene Sulfone with Cardo Fragments: This article discusses the development of advanced ultrafiltration membranes incorporating phenolphthalein, enhancing their permeability and filtration efficiency (Raeva et al., 2024).



• A fluorescence-based dual sensor for Zn(2+) and PO(4)(3-): Study on a dual sensor system utilizing phenolphthalein, applied for the detection of zinc and phosphate ions in various environmental and biological samples, employing fluorescence signaling (Samanta et al., 2024).

アナリシスノート

Identity (UV/VIS-Spectrum): passes test
Appearance: White to yellowish white powder
Clarity of the alkoholic solution (10 g/l ethanol): passes test
Absorption maximum λ_max. (buffer pH 9.8): 551 - 554 nm
Spec. Absorptivity A 1%/1cm (λ_max; 0.01 g/l; buffer pH 9.8; calculated on dried substance): 700 - 750
Transition range: pH 8.2 - pH 9.8 almost colorless - red-violet
Transition range (according to ACS): passes test
Transition interval (according Reag. Ph Eur): passes test
Loss on drying (105 °C): ≤ 1 %

安全性情報

• ピクトグラム: GHS07,GHS08
• シグナルワード: Danger
• 危険有害性情報: H315 - H341 - H350 - H361f
• 注意書き: P202 - P264 - P280 - P302 + P352 - P308 + P313 - P332 + P313
• 危険有害性の分類: Carc. 1B - Muta. 2 - Repr. 2 - Skin Irrit. 2
• 保管分類コード: 6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 3
• 引火点(°F): Not applicable
• 引火点(℃): Not applicable