Phenolphthalein
Price | Get Latest Price | ||
Package | 1Kg/Bag | 25Kg/Bag | 100Kg/Bag |
Min. Order: | 2Kg/Bag |
Supply Ability: | 20 tons |
Update Time: | 2024-12-26 |
Product Details
Product Name: Phenolphthalein | CAS No.: 77-09-8 |
EC-No.: 201-004-7 | Min. Order: 2Kg/Bag |
Purity: 0.99 | Supply Ability: 20 tons |
Release date: 2024/12/26 |
Product Information
Phenolphthalein appears as white or yellowish-white to pale orange fine crystalline powder. Odorless. Aqueous solution is acidic. Colorless to pH 8.5; pink to deep-red above pH 9. Colorless in presence of large amounts of alkali. Tasteless.Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator. Phenolphthalein exerts laxative effects by stimulating the intestinal mucosa and constricting smooth muscles. However, phenolphthalein is no longer used as a laxative due to the suspected carcinogenicity of this compound.
Product Name: | Phenolphthalein | |
Synonyms: | .alpha, alpha.-Di(p-hydroxyphenyl)phthalide;1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-;1(3H)-Isobenzofuranone,3,3-bis(4-hydroxyphenyl)-;2,2-bis(p-hydroxyphenyl)phthalide;3,3-bis(4-hydroxyphenyl)-1(3h)-isobenzofuranon;alpha-(p-hydroxyphenyl)-alpha-(4-oxo-2,5-cyclohexadien-1-ylidine)-o-toluicacid;alpha-di-(p-hydroxyphenyl)phthalide;alpha-di(p-hydroxyphenyl)phthalide | |
CAS: | 77-09-8 | |
MF: | C20H14O4 | |
MW: | 318.32 | |
EINECS: | 201-004-7 | |
Product Categories: | API;Chemistry;Furan&Benzofuran;Analytical Chemistry;Indicator (pH);pH Indicators;Indicator Solutions;Indicators;Titration;Indicator SolutionsStains and Dyes;P;Stains&Dyes, A to;Phthalein;77-09-8 | |
Mol File: | 77-09-8.mol | |
TEST ITEM: | SPECIFICATION: | RESULTS: |
Characteristics: | A white or almost white powder, practically insoluble in water, soluble in alcohol. | A white powder, practically insoluble in water, soluble in alcohol. |
Melting Point | It melts at about 260°C-262°C | 261°C ~262°C |
Identification | A:Positive B:Positive | A:Positive B:Positive |
Appearance of solution | The solution is clear and not more intensely coloured than reference solution Y7 | Complies |
Related substances | Less than 0.01% | <0.01% |
Heavy metals | Not more than0.001% | <0.0009% |
Acidity or alkalinity | Complies | Complies |
Chlorides | Not more than 0.01% | <0.01% |
Sulphates | Not more than 0.02% | <0.02% |
Loss on drying | Not more than 0.5% | 0.12% |
Sulphated ash | Not more than 0.1% | 0.01% |
Assay | 98.0%-101.0%(C20H14O4) | 99.6% |
Storage condition: | Store in well closed drums, in cool and dry storage area. |
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- Since: 1996-07-16
- Address: Fujian China ,16F, Huicheng Comm. Complex, 839 Xiahe RD.