1.07233

Phenolphthalein

pH indicator, ACS, Reag. Ph Eur

• Synonim(y): Phenolphthalein
• Wzór empiryczny (zapis Hilla): C₂₀H₁₄O₄
• Numer CAS: 77-09-8
• Masa cząsteczkowa: 318.32
• Numer MDL: MFCD00005913
• Kod UNSPSC: 12171502
• Numer indeksu EC: 201-004-7
• NACRES: NA.21

Właściwości

• product name: Phenolphthalein, indicator ACS,Reag. Ph Eur
• klasa czystości: ACS reagent
• Poziom jakości: 200
• agency: reag. Ph. Eur.; suitable for SM 2310; suitable for SM 2320
• ciśnienie pary: <0.00001 Pa ( 50 °C)
• Postać: solid
• strata: ≤1% loss on drying, 105°C
• kolor: white to yellow-white
• visual transition interval: 8.2-9.8, colorless to red-violet
• mp: 263.7 °C
• gęstość: 1.296 g/cm³ at 20 °C
• gęstość nasypowa: 350‑450 kg/m³
• λmaks.: 551-554 nm (buffer pH 9.8)
• temp. przechowywania: 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
• Klucz InChI: KJFMBFZCATUALV-UHFFFAOYSA-N

Opis

Zastosowanie

• 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).

Komentarz do analizy

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 %

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Informacja o środkach bezpieczeństwa

• Piktogramy: GHS07,GHS08
• Hasło ostrzegawcze: Danger
• Zwroty wskazujące rodzaj zagrożenia: H315 - H341 - H350 - H361f
• Zwroty wskazujące środki ostrożności: P202 - P264 - P280 - P302 + P352 - P308 + P313 - P332 + P313
• Klasyfikacja zagrożeń: Carc. 1B - Muta. 2 - Repr. 2 - Skin Irrit. 2
• Kod klasy składowania: 6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• Klasa zagrożenia wodnego (WGK): WGK 3
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable