1.07233

酚酞

pH indicator, ACS, Reag. Ph Eur

• 同義詞: 酚酞
• 經驗公式（希爾表示法）: C₂₀H₁₄O₄
• CAS號碼: 77-09-8
• 分子量：: 318.32
• MDL號碼: MFCD00005913
• 分類程式碼代碼: 12171502
• 酶委員會索引編號: 201-004-7
• NACRES: NA.21

屬性

• product name: 酚酞, indicator ACS,Reag. Ph Eur
• 等級: ACS reagent
• 品質等級: 200
• agency: reag. Ph. Eur.; suitable for SM 2310; suitable for SM 2320
• 蒸汽壓力: <0.00001 Pa ( 50 °C)
• 形狀: solid
• 損耗: ≤1% loss on drying, 105°C
• 顏色: 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
• 體積密度: 350‑450 kg/m³
• λmax: 551-554 nm (buffer pH 9.8)
• 儲存溫度: 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 密鑰: KJFMBFZCATUALV-UHFFFAOYSA-N

描述

應用

• 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).

分析報告

鉴别（UV/VIS光谱）：通过测试
外观：白色至黄白色粉末
酒精溶液的澄清度（10 g/l乙醇）：通过测试
吸收最大值λ_max.（缓冲液pH 9.8）：551 - 554 nm
比吸光系数 A 1%/1cm（λ_最大值；0.01 g/l；缓冲液pH 9.8；以干燥物质计算）：700 - 750
转换范围：pH 8.2 - pH 9.8 几乎无色-红紫色
转换范围（根据ACS）：通过测试
转换间隔（根据Reag.Ph Eur）：通过测试
干燥失重（105 °C）： ≤ 1 %

安全資訊

• 象形圖: GHS07,GHS08
• 訊號詞: Danger
• 危險聲明: H315 - H341 - H350 - H361f
• 防範說明: P202 - P264 - P280 - P302 + P352 - P308 + P313 - P332 + P313
• 危險分類: Carc. 1B - Muta. 2 - Repr. 2 - Skin Irrit. 2
• 儲存類別代碼: 6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• 水污染物質分類（WGK）: WGK 3
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable