If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
1.07233
Phenolphthalein
pH indicator, ACS, Reag. Ph Eur
동의어(들):
Phenolphthalein
제품정보 (DICE 배송 시 비용 별도)
다음으로 건너뛰기
제품 이름
Phenolphthalein, indicator ACS,Reag. Ph Eur
SMILES string
O1C(c4c(cccc4)C1=O)(c3ccc(cc3)O)c2ccc(cc2)O
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
grade
ACS reagent
agency
reag. Ph. Eur.
suitable for SM 2310
suitable for SM 2320
vapor pressure
<0.00001 Pa ( 50 °C)
form
solid
loss
≤1% loss on drying, 105°C
color
white to yellow-white
visual transition interval
8.2-9.8, colorless to red-violet
mp
263.7 °C
density
1.296 g/cm3 at 20 °C
bulk density
350‑450 kg/m3
λmax
551-554 nm (buffer pH 9.8)
storage temp.
2-30°C
Quality Level
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이 품목 | 105945 | 04479 | 319236 |
|---|---|---|---|
| grade ACS reagent | grade ACS reagent | grade certified reference material, TraceCERT® | grade - |
| agency reag. Ph. Eur. | agency - | agency - | agency - |
| vapor pressure <0.00001 Pa ( 50 °C) | vapor pressure - | vapor pressure - | vapor pressure - |
| form solid | form powder | form - | form liquid |
| loss ≤1% loss on drying, 105°C | loss - | loss - | loss - |
| color white to yellow-white | color - | color - | color colorless |
Analysis Note
Appearance: White to yellowish white powder
Clarity of the alkoholic solution (10 g/l ethanol): passes test
Absorption maximum λmax. (buffer pH 9.8): 551 - 554 nm
Spec. Absorptivity A 1%/1cm (λmax; 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 %
Application
- 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).
signalword
Danger
Hazard Classifications
Carc. 1B - Muta. 2 - Repr. 2 - Skin Irrit. 2
저장 등급
6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
시험 성적서(COA)
제품의 로트/배치 번호를 입력하여 시험 성적서(COA)을 검색하십시오. 로트 및 배치 번호는 제품 라벨에 있는 ‘로트’ 또는 ‘배치’라는 용어 뒤에서 찾을 수 있습니다.
관련 콘텐츠
This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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